The Puebla Deermouse was described in 1898, it is known only from two specimens which were collected at the cities of Ciudad Serdán and Tehuacan in southeastern Puebla, Mexico.
The species was last seen around 1948, the places where it was found are now heavily degraded by agricultural conversion and it is believed to be extinct.
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edited: 23.01.2020
Pemberton’s Deermouse (Peromyscus pembertoni)
Pemberton’s Deermouse was restricted to the Isla San Pedro Nolasco in the Culf of California, Baja California, Mexico.
The species reached a legth of about 21 cm (including the tail), its fur was cinnamon-colored and flecked with some fine darker lines the head was slightly ligther colored and the belly was white.
Pemberton’s Deermouse was described in 1932 based on 12 specimens that had been collected on December 26, 1931 by Dr. William Hendy Burt of the California Institute of Technology, it was never found again.
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edited: 23.01.2020
Estanque Deermouse (Peromyscus guardia ssp.)
The Estanque Deermouse was endemic to the Isla Estanque, a tiny, only 0,83 km² large islet south to Isla Ángel de la Guarda in the Gulf of California, Baja California, Mexico. However, this particular population apparently was never officially described and may in fact have been identical to the nominate subspecies inhabiting Isla Ángel de la Guarda.
Anyway, whether endemic or not, the deermice of Isla Estanque are gone now, the whole population appears to have been wiped out within a single year (1998 to 1999) by a single feral cat! [1]
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References:
[1] Ella Vázquez-Domínguez; Gerardo Ceballos; Juan Cruzado: Extirpation of an insular subspecies by a single introduced cat: the case of the endemic deer mouse Peromyscus guardia on Estanque Island, Mexico. Oryx 38(3): 347-350. 2004
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edited: 23.01.2020
Mejia Island Deermouse (Peromyscus guardia ssp. mejiae)
The Mejia Island Deermouse, described in 1932, was a subspecies of the Guarda Deermouse (Peromyscus guardia Townsend) and was endemic to the tiny Isla Mejía in the Gulf of California, Baja California, Mexico.
This mouse was last recorded in 1973 but disappeared sometimes after that date due to predation by introduced cats and competition by likewise introduced mice and rats. [1]
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References:
[1] Erik Mellink; Gerardo Ceballos; Jaime Luévano: Population demise and extinction threat of the Angel de la Guarda deer mouse (Peromyscus guardia) Biological Conservation 108: 107-111. 2007
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edited: 23.01.2020
Chadwick Beach Cotton Deermouse (Peromyscus gossypinus ssp. restrictus)
The Chadwick Beach Cotton Deermouse was a subspecies of the Cotton Deermouse (Peromyscus gossypinus (Le Conte)) that was restricted to a small area along the coast of southwestern Sarasota County in Florida, USA.
The subspecies was described in 1939, apparently from specimens collected one year earlier, it was never found again and is now thought to be extinct.
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edited: 23.01.2020
Giant Island Deermouse (Peromyscus nesodytes)
The Giant Island Deermouse was described in 1936 based on subfossil remains, the species was restricted to San Miguel – and Santa Rosa Islands, two of the Channel Islands offshore southwestern California, USA.
The species is believed to have disappeared sometimes between 2000 years ago and 1860, probably due to the accidental introduction of the North American Deermouse (Peromyscus maniculatus (Wagner)) by the Chumash, the native people of that region.
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Roque Deermouse (Peromyscus maniculatus ssp. cineritius)
This subspecies of the North American Deermouse (Peromyscus maniculatus (Wagner)) was endemic to the Isla San Roque in the Baja California, Mexico.
The island population disappeared due to the introduction of cats, which not only preyed upon the mice but also largely destroyed the seabird colonies.
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This subspecies is not accepted by all zoologists.
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edited: 23.01.2020
La Guarda Deermouse (Peromyscus guardia ssp. guardia)
The La Guarda Deermouse, also known as Angel Island Mouse, was described in 1912, the species is restricted to the Isla Ángel de la Guarda and several of the nearby smaller islets in the Gulf of California, Baja California, Mexico.
The nominate form inhabited the largest of the islands, Isla Ángel de la Guarda.
The La Guarda Deermouse with all its subspecies is now considered extinct, it fell victim to predation by introduced feral cats as well as competition by likewise introduced House Mice (Mus musculus L.), which now are found all over these islands.
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edited: 23.01.2020
Pallid Beach Deermouse (Peromyscus polionotus ssp. decoloratus)
The Pallid Beach Deermouse was a subspecies of the Oldfield Deermouse (Peromyscus polionotus (Wagner)) that inhabited a small area of coastal sand dunes along the Atlantic coast of Florida, USA.
This form was quite abundant when it was described in 1939, however the populationds disappeared subsequently and no individual was found ever since, thus this subspecies is now redarded as being extinct.
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edited: 23.01.2020
Granito Deermouse (Peromyscus guardia ssp. harbisoni)
The Granito Deermouse, described in 1967, was a subspecies of the Guarda Deermouse (Peromyscus guardia Townsend) and was restricted to the small Isla Granito in the Gulf of California, Baja California, Mexico.
The whole species, including its three named and one unnamed subspecies, is now extinct.
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edited: 23.01.2020
Slevin’s Deermouse was described in 1924, the species is, or most likely was, endemic to Isla Santa Catalina, southern Baja California, Mexico.
The species reached a size of about 21 cm (including the tail), it was formerly very abundant and, in contrast to mainland species of its genus, was even found out in the daytime.
Slevin’s Deermouse was not found in recent surveys, when several deermouse individuals were caught, which again were later identified as belonging to another species, Cactus Deermouse (Peromyscus eremicus (Baird)) which apparently had been accidentally introduced to the island by fishermen sometimes prior. [1]
The endemic deermice of Isla Santa Catalina are now almost certainly extinct.
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References:
[1] Sergio Ticul Alvarez-Castañeda; Patricia Cortés-Calva: Mammalian Species 705: 1-2. 2002
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edited: 23.01.2020