14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 60 



Remarks. — The forest rabbits of the gabbi group doubtless in- 

 habit nearly the whole of Panama, and range from sea level well up on 

 the slopes of the higher mountains. Eight specimens from localities 

 on both the Atlantic and Pacific sides in the Canal Zone agree with 

 the types of gabbi and have been used for comparison. The new 

 form lacks the strongly rufescent suffusion shown in gabbi, and the 

 upper parts are more obscured by the long black tips of the longer 

 hairs. 



Specimens examined. — Ten, from the type locality. 



ICTICYON PANAMENSIS, sp. nov. 



Type from near head of Rio Limon (altitude 5.000 feet). Mount 

 Pirri, eastern Panama. No. 179046, female adult, U. S. National 

 Museum (Biological Survey Collection), collected byE. A. Gold- 

 man, April 28, 191 2. Original number 21655. 



General characters. — Similar in general to venaticus, but color of 

 head and shoulders paler, less rusty reddish ; skull differing in de- 

 tail. 



Color. — Type : Top and sides of head, neck, shoulders, and an- 

 terior half of back pinkish buff, varying to buffy white between 

 shoulders and middle of neck; flanks and posterior half of back 

 similar, but somewhat darkened by a sparse admixture of dusky 

 hairs ; under side of neck, chest, and belly pale ochraceous buff 

 thinly mixed with black, becoming clearer ochraceous buff on in- 

 guinal region: interorbital space, muzzle and anterior cheeks pale 

 ochraceous buffy, varied by a few black hairs under eye ; chin dusky ; 

 fore limbs blackish except toes and a narrow line along under side 

 which are pale buffy; hind limbs blackish, becoming buffy on inner 

 sides of thighs, and brownish toward toes ; buttocks covered with 

 mixed dusky and buffy hairs ; tail black with a few brownish hairs 

 along basal half of under side. Young (nearly full-grown, but very 

 immature) : Top of head, ears, and neck pale ochraceous buff, this 

 color darkening by intermixture with black hairs on a Y-shaped area 

 narrowing from between shoulders to a point near center of back : 

 posterior half of back, sides, shoulders, entire under parts and tail 

 black; limbs and feet brownish black; interorbital space, cheeks, and 

 eyebrows mixed black and pale buff; muzzle and upper lip dusky. 



Skull. — In general form closely resembling that of venaticus, but 

 rostrum apparently mure depressed; nasals tapering more gradually 

 and reaching further posteriorly (lateral margins turned more ab- 

 ruptly inward in venaticus) : frontals and premaxilhe not meeting 



