1898. _Sciurus alleni_ Nelson, Proc. Biol. Soc. Washington,
12:147, June 3, type from Monterrey, Nuevo Leon.
_Distribution in Tamaulipas._--Along Sierra Madre Oriental
in southwestern part of state.
This squirrel occurs in stands of oak and "nogalillos" (hickory) trees
that grow along streams and arroyos. Individuals are active from
sunrise to about 10:00 a. m. and again late in the afternoon. They give
a soft "chirring" call.
Nelson (1899:92) noted that specimens from Miquihuana were smaller than
those from the type locality. Among specimens I have examined, some are
as large as topotypes and two females are larger (total length, 486 and
490) than measurements given for the species by Nelson (_op. cit._).
_Record of occurrence._--Specimens examined, 11, from Joya
Verde, 35 km. SW Cd. Victoria, 3800 ft.
Additional records: Near Victoria (Nelson, 1899:92);
Miquihuana (_ibid._); Joya de Salas (Goodwin, 1954:8).
=Glaucomys volans herreranus= Goldman