85 



few , three in the upper jaw, six in tlie lower. The pectoral 

 does uot quite reach the micldle of the ventral. Total length 

 13,3 cm. 



Mormyrus adspersus Gthr , D 20 ; A 25 ; LI. ca, 50 ; suout 

 a little ahorter thau the eye; pectoral not yet reaching the 

 extremity of the ventral ; total longth 6,3 cm. 



Mormyrus simus Svge. D 26 ; A 37 ; L.1. 41. Height of the 

 body one-third of the total length, snout as long as the 

 diameter of the eye, interorbital space nearly twice the latter. 

 Pectoral three-fourths of the length of the head ; extending 

 a little more than halfway the ventral. Total length 9.5 cm. 



Notopterus nigri Gthr. 



Tetrodon fahaJca Hass. 



The species novae of the coUection are the folio wing: 



Fam. Chromides. 

 Lamprologus g. n. 



This genus may be ranged araong those of the first group of 

 Chromides in A. Günther's Catalogue (Vol. IV) , being characterised 

 by a dorsal fin, with the spinous portion more developed than 

 the soft, and by the outer branchial arch hearing short and 

 widely set anterior prominences, an additional lobe being absent. 



Each jaw with a front series of awl-shaped teeth , behind which 

 is a rather broad band of very small teeth. Anal spines 6 — 7. 

 Body compressed, oblong. Scales ctenoid; cheeks as well as the 

 other parts of the head scaleless. Base of caudal fin scaly. Dorsal 

 spines numerous , spinous and soft portions of the dorsal continuous. 



Lamprologus congoensis (fig. 1.) 

 D 18- 19 18-10; A 6—7/5—6; LI. 25— 26+8— 11 ; Lt. 3 / 8. 



Height of the body circa one-fifth of the total length (caudal 

 included), length of the head circa one-fourth. Length of the 

 snout three-sevenths of the length of the head, diameter of the 

 eye two-sevenths , interorbital space one-fifth. Lower jaw slightly 

 prominent; maxillary extending to below the front margin of the 



