364 Mr. 0. Thomas on 



$ . Head opaque; the clypeus covered with silver pubes- 

 cence, with two small teeth in the middle of the apical margin. 

 Eyes separated at the base of the clypeus by a distance not 

 quite equal to the combined length of the two basal joints of 

 the flagellum, and by about the same distance on the vertex; 

 posterior ocelli very narrowly separated from the eyes, 

 distinctly larger than the anterior ocellus. Flagellum thick- 

 ened from the base to the apex, the first joint globular, the 

 remaining joints longer than broad; the front longitudinally 

 impressed below the anterior ocellus, produced into a minute 

 tubercle between the antennae, very finely and closely punc- 

 tured. Thorax subopaque, minutely punctured ; median 

 segment smooth and shining, with a mediap longitudinal 

 furrow, but no lateral furrows. Abdomen shining, very 

 minutely punctured ; the first segment longer than the 

 second and third combined, the basal half forming a petiole, 

 the apical half very gradually widened to the apex, where it 

 is about half as broad as-the apex of the second segment ; 

 the third about equal in length to the second and distinctly 

 broader. Hind tibiae without spines. 



Hab. Shillong, Assam, 5000 ft. (T. Bainbrigye-Fletcher) , 

 October 1916. 



XLIII. — Notes on Petrodromus and B-hynchocyon. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



I OWE to the kindness of Mr. Ernest Warren, of the Natal 

 Museum, Pietermaritzburg, the opportunity of examining a 

 number of small mammals which had been sent to that 

 museum from various South-African localities. Among 

 them I may record an example of the rare Otomys laminatus, 

 Thos. & Schw., from Induku-duku, near Umfolozi, and a 

 Petrodromus from Manguzi, N. Zululand, the latter being the 

 first-known occurrence of the genus south of the boundary of 

 Portuguese S.E. Africa. This southern Petrodromus appears 

 to represent a new subspecies, which may be called 



Petrodromus tetradactylus loarreni, subsp. n. 



General essential characters of true tetradactylus, but 

 colour greyer and less buffy throughout. Back with the 

 buffy suffusion at a minimum, sides and hips clear grey, 



