1922] Allen, Congo Scluridse, Anomaluridse , Idiuridae 61 



Protoxerus stangeri signatus Thomas 



Protoxerus stangeri signatus Thomas, 1910, Ann. Mag. Nat. Hist., (8) V, January, 

 p. 85. Type locality, Lodja, Upper Lukenie River, Belgian Congo. 



A single specimen from Bolobo (skin without skull), presented to the 

 Expedition by Dr. Gerling, is apparently referable to this form which, as 

 indicated by the description based on the type specimen from Lodja, it 

 closely resembles. The type locality is some 400 miles east of Bolobo. 

 The differences from the series of P. s. centricola as recorded above are 

 slight and it is here recognized mainly on geographical grounds. 



Euxerus Thomas 



Euxerus Thomas, 1909, Ann. Mag. Nat. Hist,, (8) III, June, p. 473. Genotype, 

 by original designation, Sciurus erythopus Geoffroy. 



Euxerus erythopus lacustris (Thomas) 



Xerus erythropus lacustris Thomas, 1905, Ann. Mag. Nat. Hist., (7) XV, April, 

 p. 388. Masindi, Unyoro. 



Euxerus erythropus lacustris Thomas, 1915, Ann. Mag. Nat. Hist., (8) XVI, 

 December, p. 474. "Panga" (near Poko) (3), Poko (8 specimens). 



Represented by 30 specimens, collected as follows: 



Farad je, 20 (2 d 71 and 10 9 adults, 1 nursling, 7 one-fourth to one- 

 third grown), February 20, 22, 26, March 4, 5, 14, 31, April 3, 11, 29, 30, 

 May 27, June 29, September 3, 11, 1911, October 16, December 14, 

 1912, January 10, 12, 1913. 



Niangara, 9 (2 adult, 7 immature, of which 5 are nurslings), Nov- 

 ember 12-28, December 22, 1910, and January 2, 1911. 



Rungu, 1 (c? adult), January 30, 1913. 



Collectors' measurements of 11 adults (2 males, 9 females) from 

 Faradje: Total length, 492 (474-515); head and body, 282 (259-297); 

 tail vertebra, 209(189-230); hind foot, 72 (68-75) ; ear, 18.8 (18-20). 



Skulls, same specimens: Greatest length, 65.1 (63.6-67.2); zygo- 

 matic breadth, 34.2 (33.7-34.6). 



The three localities at which specimens were taken are all in the 

 open districts of the savannah in the northeastern Belgian Congo. 



Young specimens a few weeks old are similar in coloration to the 

 adults, the pattern being the same, but a little lighter in tone, the light 

 tips to the hairs of the upperparts, owing to the shortness of the pelage, 

 concealing the darker basal portion. The tail, however, is externally 

 white, the long white tips of the hairs usually wholly concealing the broad 

 subapical black zone of the tail hairs. Later, as the animal increases in 

 size, the black base of the hairs forms a narrow black median line on both 



