6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 66 



vermiculated and the black terminal third sharply marked ; hands 

 and feet heavily grizzled. Skull like that of M . s. ibccc, but decidedly 

 smaller ; teeth smaller. • 



Measurements of type. — Compared with adult male of same age 

 (with basal and nasal sutures closed) of Miingos sanguineus 

 ibece from Kitanga, British East Africa, measurements of the latter 

 in parentheses: Head and body, 305 (350) mm. ; tail vertebrae, 247 

 (325) ; hind foot, 54 (67) ; ear, 24 (— ) . Skull : Condylobasal length, 

 61.3 (65.1) ; zygomatic breadth, 30.9 (33.8) ; mastoid breadth, 23.2 

 (24.3) ; least postorbital constriction, 9.6 (10.9) ; breadth of rostrum 

 over canine, 10.9 (11.9) ; length of mandible, 39.3 (42.2) ; maxillary 

 tooth row, including canine, 21.7 (23.9) ; lower tooth row, including 

 canine, 24.2 (26.5). 



Remarks.- — This form needs no special comparison with the 

 Uganda forms described by Wroughton, M. s. ugandcc and M. s. 

 galbus ; both are larger races and both have the hind feet unicolored 

 ochraceous. Two specimens of the new Kavirondo form are in the 

 collection, the type and an adult male from Lukosa River. The small 

 size of the hind foot and skull readily distinguish them from speci- 

 mens of the neighboring forms. The adult male skull is about the 

 size of the female skulls of proteus and considerably smaller than any 

 female skull in a series of specimens of ibece. Matschie has recently 

 named several " species " of mungooses of this group from various 

 localities in East Africa,* but none of his descriptions agrees with the 

 specimens on which this new variety is based. 



MUNGOS ALBICAUDUS DIALEUCOS, subsp. nov. 



Type from Mount Lololokwi, British East Africa. United States 

 National Museum No. 184794, skin and skull of adult male (basal 

 and nasal sutures closed; teeth much worn). Collected September 

 18, 1911, by Edmund Heller. 



Description, — Like Miingos albicaudus ibeanus Thomas but lighter 

 colored ; more grayish buff and silvery, less brownish buff and black- 

 ish. Underfur and long hairs of sides of body especially paler, more 

 silvery gray and very light buff ; sides of neck, cheeks, and muzzle 

 grayer. Skull and teeth as in ibeanus, the lower molars showing no 

 reduction in size as in the northern form, Miingos albicaudus 

 leucuriis. 



^ Sitz-ber. Ges. Nat. Freunde Berlin, 1914, pp. 435-457- December. 



