148 Mr. O. Thomas on a 



little fish has since been found by the same collector at various 

 localities on the Kile, between Beni Souef and Gondokoro, 

 and a second species has been discovered by him at Fashodii 

 and at Lake No, \^ hite Nile. For this new species I propose 

 the name of 



Mochocus hrevis. 



Easily distinguished from the preceding by the shorter 

 caudal part of the body, the first dorsal fin being equally 

 distant from the end of the snout and from the root of the 

 caudal, or only a little nearer the former. Depth of body 3^ 

 to 4.^ times in the total length, length of head 8 to 31 times. 

 Occiput and nuchal shield slightly tectiform, but without a 

 keel. J\l axillary barbel reaching the extremity of the ventral 

 fin or a little beyond. First dorsal I G, the spine without 

 any serration and always shorter than the head ; second 

 dorsal 9-17; anal 9-10. Caudal peduncle only a little 

 longer than broad. Coloration as in AI. niloticus, but 

 pectoral, ventral, and anal fins often with some brown spots. 



Total length 31 mm. 



Forty-two specimens from Fashoda and one from Lake No. 



In i)i. niloticus there is a series of three or four small bony 

 scutes, ankylosed to the interneural bones, on each side of 

 the base of the soft rays of the first dorsal tin ; these little 

 scutes, which have hitherto been overlooked, are absent in 

 M. hrevis. 



XXIL — On a neio I'lgmy Antelope ohtained by Col. J. J. 

 tiarrison in the Semliki Forest. By Oldfield Thomas. 



The British IMuseum owes to Col. J. J. Harrison the skull 

 of a pigniy antelope from the Semliki Forest allied to the 

 Cameroon species described by de AVinton as Neotragus 

 Batesi *. 1 have also had the opportunity of examining the 

 skin of the specimen, which is now in Col. Harrison's 

 collection. 



JSeotragus Batesi, as shown by de Winton, is in many 

 res})ects allied to both Neotragus and JSesotragus, and in the 

 light of the present examination of the new material, including 

 an additional example from the Cameroons, 1 am disposed to 

 consider it as representing a distinct genus, ^^ hose range 



* P. Z. S. 1903, i. p. l\)± 



