108 CUNICULUS. 



Type locality. Huehuetan, southern Chiapas, Mexico. 



Geogr. Distr. Southern part of the state of Chiapas from sea-level 

 to 3500 feet altitude, and probably adjacent parts of Guatemala. 



Genl. Char. Similar to D. punctata in size and general appearance, 

 but cranial characters different. Premaxillae broader posteriorly; 

 sphenopalatine vacuities larger; audital bullas smaller. 



Color. Very similar to D. punctata. Upperparts mixed black and 

 tawny ochraceous, hairs annulated; underparts similar but paler; 

 chin, axillae, inner side of hind legs and middle of abdomen pale orange- 

 buff; feet blackish. Ex type in United States National Museum. 



Measurements. Total length, 492; tail, 30; hind foot, 120. 

 Skull: Occipito-nasal length, 102.8; Hensel, 76; zygomatic width, 

 48.2; intertemporal width, 28.5; palatal length, 52; length of nasals, 

 38.5; length of upper molar series, 19.5; length of mandible, 49.6; 

 length of lower molar series, 20.6. Ex type in United States National 

 Museum. 



Genus Cuniculus. 



Cuniculus Brisson, Regnum Anim., 1762, p. 98. Type [Cuniculus} 

 paca Brisson. 



Mr. Hollister in the Proceedings of the Biological Society of Wash- 

 ington, Vol. XXVI, 1913, p. 79, calls attention to this genus and claims 

 that the type could not be fixed by elimination, as was done by Dr. 

 C. H. Merriam, who made Cuniculus alactaga (Olivier) 1800, the type, 

 because Cuniculus cauda longissima Brisson which = C. alactaga 

 (Olivier) was placed in brackets as doubtfully referred to the genus, 

 and according to Article 30 of the International Code this makes it 

 not permissable, and therefore the type must be chosen by selection. 

 He therefore makes [Cuniculus} paca Brisson the type and accordingly 

 Cuniculus supercedes Agouti Lacepede, 1799. 



Cuniculus paca nelsoni (Goldman). 



Agouti paca nelsoni Goldm., Smith. Misc. Coll., LX, 1913, No. 22, 

 p. 9. 



Type locality. Catemaco, southern Vera Cruz. 



Geogr. Distr. Coastal plains and mountain slopes from the vicinity 

 of Jalapa, State of Vera Cruz, eastward and southward through States 

 of Tabasco, Chiapas, and the Peninsula of Yucatan to eastern Guate- 

 mala, and western Honduras. 



Genl. Char. Similar to A. p. mrgata but more rusty in color; no 

 dark stripe on flank below the white one. 



Color. Upperparts dark cinnamon-rufous, with narrow white 



