Osgood — Thirty New Mice of the Genus Peromyscus. 69 



considerable de{)aituie froin tyi)ical hiniilfrdtins. The small series from 

 La Salada have uniform!}' narrow sknlls, noticeably narrower than in 

 bnnderamis, but specimens from Los Reyes and La Hnacana indicate that 

 this is not a stable character. It seems, however, to be worth mentioninji;. 

 Specimens examined. — Total nnnd)er, 15, from localities in Mexico as fol- 

 lows: Guerrero, Acahuizotla, o ; Michoacan, La Hnacana, 4, T>a Salada, 6, 

 Los Reyes, 2. 



Peromyscus banderanus angelensis sp. nov. 



Tijpe from Pnerto Angel, Oaxaca, ^lexico. Adnlt female. No. 71,442, 

 U. S. National Mnseum, Biological Survey Collection, March i:!, 1895, 

 K. W. Nelson and E. A. Goldman. 



Charncters. — Similar to typical /*. banderanus, but slightly larger; skull 

 with s^upraorbital bead nearly obsolete instead of being well developed. 



Color. — Almost exactly as in P. banderanux ; possibly averaging a trifle 

 darker. 



(S'^"M^/.— Larger than in banderanus; braincase less elongate and inter 

 parietal shorter; nasals longer; supraorbital edges reduced to simple 

 shelves, much as in P. melanophrys, without an elevated bead bounded 

 by a sulcus on the inner side ; molar teeth slightly larger than in bander- 

 anus; audital bulUe about as in banderanu.'^ and aztecus, much smaller than 

 in mi'buiophrys. 



Measurements. — Type: Total length, 235 ; tail vertebrte, 123 ; hind foot, 

 20.5. Average of 7 adult topotypes, 235 (222-258); 120 (112-128); 27 

 (26.5-28). Skull.— Two adults: Greatest length, 31.3*-33.4; basilar 

 length of Hensel, 23.4-24.9; zygomatic width, 15-15.4; interorbital 

 width, 5.2-5; nasals, 11.7-12.8; interparietal, 3.b x 10.6-3.4 x 11.2; 

 upper molar series, 4.6-4.6; palatine slits, 6 x 2.4-5.7 x 2.4. 



Remarks. — The naked soles of this form decide its affinities Avith ban- 

 deranus, and its color is also in accord, but its skull with the supraorbital 

 beads nearly obliterated suggests that of P. aztecus. Close examination 

 of detailed characters of the skull, however, leaves scarcely any room for 

 doubt that its proper position is with banderanus. 



Specimens examined. — Total number, 22; 20 from the type locality and 

 2 from Plnma, Oaxaca. 



Peromyscus mexicanus teapensis subsp. nov. 



Tijpe from Teapa, Tabasco, Mexico. Adult female. No. 100,022, U. S. 

 National Museum, Biological Survey Collection, March 25, 1900, E. W. 

 Nelson and E. A. Goldman. 



Characters. — Similar to P. m. totontepecus, but sides brighter and more 

 contrasted with dark area in middle of back ; skull with thicker, heavier 

 rostral region. 



* Measurements mentioned first are those of the type. 



