NO. 22 MAMMALS FROM PANAMA AND MEXICO — GOLDMAN 1 3 



top of head usually somewhat more rufescent than hack ; under parts, 

 including - under side of neck, chest and sides of abdomen, similar 

 to hack but paler and grayer; chin, lips, inner sides of fore and 

 hind legs, inguinal region and median line of abdomen, huffy 

 white; feet blackish, more or less irregularly lined with buffy-ringed 

 hairs. 



Skull. — Closely resembling that of D. p. punctata, but audital 

 bullae usually larger, and more inflated anteriorly. 



Measurements. — Type: Total length, 522 millimeters; tail verte- 

 brae, 35; hind foot, 120. An adult male topotype: 487; 25; 126. 

 An adult female from La Vega, northeastern Yucatan; 555 ; 29; 130. 

 Skull (type): Greatest length, 108; condylobasal length, 100.5; 

 zygomatic breadth, 49.8 ; nasals, 44.5 ; interorbital breadth, 30.5 ; 

 palatal length, 53.7; maxillary toothrow, 19. 



Remarks. — The range of this pale form in the Yucatan peninsula 

 marks the extreme northern limit of the D. punctata group. It is a 

 rather common animal in the arid or semi-arid, low-lying forested 

 sections of the region. 



Specimens examined.- — Total number, 7, from localities as follows: 

 Campeche : Apazote (type locality), 4; La Tuxpana, 1. 

 Yucatan : La Vega, 2. 



DASYPROCTA PUNCTATA CHIAPENSIS, new subspecies 



Type from Huehuetan, southern Chiapas, Mexico. No. 77997, 

 female adult, U. S. National Museum (Biological Survey Collec- 

 tion), collected by E. W. Nelson and E. A. Goldman, February 26, 

 1896. Original number 9430. 



Distribution. — Southern Chiapas, from sea level to at least 3,500 

 feet altitude, and probably adjacent parts of Guatemala. 



General characters. — Similar to D. punctata punctata in size and 

 color, but differing in well marked cranial details ; premaxillae 

 broader posteriorly ; sphenopalatine vacuities larger ; audital bullae 

 smaller. Differing from D. punctata yucatanica in decidedly richer, 

 more rufescent coloration and in important cranial characters. 



Color. — Upper parts varying from tawny ochraceous to ochraceous 

 rufous rather finely mixed with black, the hairs annulated about as in 

 D. p. punctata; under parts in general similar to back, but paler; 

 chin and armpits, inner sides of hind legs and median line of abdo- 

 men varying from pale or yellow buff to pale orange buff; feet 

 blackish, with a few tawny hairs encroaching on metatarsus. 



Skull. — Size and general form about as in D. p. punctata; ascend- 

 ing branches of premaxillae much broader posteriorly, the broadening 



