NO. I/ UNGULATES AND PRIMATES FROM AFRICA — HELLER II 



by its darker back which is decidedly ochraceous-tawny and by its 

 wholly black feet and hands as well as larger body size. 



The measurements of the type in the flesh were: head and body, 

 460 mm.; tail, 620; hindfoot, 133; ear, 32. The skull is that of an 

 aged animal with the occipital sutures no more evident and the in- 

 cisor teeth well worn. The temporal ridges do not form a sagittal 

 crest but the median occipital region is marked by a flattened raised 

 band. Greatest length, 104 ; basilar length, 70 ; zygomatic breadth, 

 70; post-orbital constriction, 44; median length of nasals, 17; length 

 of upper molar series, 26 ; width of palate at last molar, 18. 



A series of 13 specimens of this race is in the National Museum 

 from Ndi, Voi, Changamwe, and Mtoto Andei stations collected by 

 the Rainey Expedition. Most of these were collected at Ndi, a Taita 

 village at the north base of Mount Mbololo. Here they were found 

 living in the acacia trees on the steep sides of the mountain from 

 which they descended daily to the small stream near the village to 

 drink. Others were seen in fig trees growing near the banks of the 

 Voi River close to the station. This monkey is called by the Swahili 

 " tumbili " and the name has been adopted by many of the inland 

 tribes and the resident Europeans for the monkeys of the pygerythra 

 group. 



LASIOPYGA PYGERYTHRA ARENARIA, new subspecies 



Desert Tumbili Monkey 



Type from the Merille waterholes, Marsabit Road, British East 

 Africa; adult male, Cat. No. 182201, U. S. Nat. Mus. ; collected by 

 Edmund Heller, July 25, 191 1 ; original number, 387. 



Characters. — Closely resembling Lasiopyga pygerythra callida of 

 Naivasha but separable by the more tawny dorsal coloration, less ex- 

 tensively black feet, shorter pelage and longer tail. From rubcllus 

 of the Mount Kenia region it may be distinguished by its darker 

 dorsal coloration and lighter colored limbs and tail. 



There are no flesh measurements of the type available but a speci- 

 men (Cat. No. 182 140, U. S. Nat. Mus.) of the race from the base 

 of Mount Uaragess had the following dimensions : head and body, 

 445 mm.; tail, 650; hindfoot, 129; ear, 33. Skull of type old with 

 worn molars and incisors. Sagittal crest low and short. Greatest 

 length, 99 ; basilar length, 64 ; zygomatic breadth, 70 ; post orbital con- 

 striction, 42.5 ; median length of nasals, 22 ; length of upper molar 

 series, 24 ; width of palate at last molar, 18. 



