178 MESSRS. O. THOMAS AND H. SCHWANN ON [Feb. 2,, 



and as a Pachyuromys, but after careful consideration we think 

 that it needs a special genei-ic name. From Gerhillus it differs, 

 among other characters, by its shorter tail and very much larger 

 bullae, in which respects it approaches Pachyuromys. But its 

 thin, unswollen tail, its narrow faintly-grooved incisors, normally 

 shaped palatine foramina, less exaggerated bullae, and widely 

 different geographical distribution prevent its being referred to 

 the latter genus, towards which, however, it may be regarded as 

 forming a link (leaixos). 



Mr. Gi'ant also obtained an example of this species when 

 collecting for Col. Sloggett at Deelfontein. 



" This animal was reported as being very common, especially in 

 some of the old stone blockhouses along the line."— C. B. H. G. 



1 7. Otomys broomi Thos. 



Ann. Mag. N. H. (7) x. p. 313 (1902). 



c? . 466, 434, 462. $ . 437, 432, 460, 524. Klipfontein. 



This species, the Namaqualand representative of 0. tmisulcatus,. 

 was discovered by Dr. Broom at Port Nolloth in 1897. The 

 Klipfontein series quite agrees with his two specimens as far as 

 i-egards colour and the great size of the ears, but the bullse are 

 perhaps less definably larger. 



" ' Veldt-rot ' of the Dutch. 



" Frequenting the open flats and the lowest slopes of the 

 mountains and kopjes, where it makes a nest of sticks about 

 2 feet high in the bottom of a milk-bush, mth a hole close 

 beneath the surface. Above ground regular runs connect one 

 nest with another. 



" Apparently not more than one pair inhabits each nest, and 

 when disturbed from it will run along theii* well-Avorn tracks to 

 another close at hand. 



" A vegetarian."— 0. B. H. G. 



18. Otomys brantsii Smith. 



c? . 446. 441. $ . 400, 395, 403, 394, 455, 442. Klipfontein. 



S . 388! Port Nolloth. 



2 , 389. Anenous. 



The oi'iginal Uttryotis brantsii of Smith was described fi'om two 

 specimens, male and female. The former was " tinted strongly 

 with fulvous " and " pencilled freely with black " ; the latter, 

 which the National Museum still possesses, is distinctly paler^ 

 and agrees very well in colour with the above series from Klip- 

 fontein. As this locality is very near the one quoted by Dr. Smith, 

 " toward the mouth of the Orange River," it would be advisable 

 to accept the female as the type and to ignore the darker male, 

 which may have come from quite another region. The Namaqua 

 series might therefore be treated as topotypes. 



Compared with these the set collected at Deelfontein are 

 sufficiently different to require subspeciiic distinction. 



The new form may be called Otomys brantsii luteolus, and may 



