OF FISHES FEOM LAKE TANGANYIKA. 11 



brown lateral stripe from the upper lip, through the eye, to the base of the caudal, 

 where it expands into a spot ; another dark brown stripe from the vertex along the 

 base of the dorsal ; a few brown spots on the dorsal ; anal edged with dark brown ; a 

 black bar at the base of the pectoral, which is white. 



Total length 78 millim. 



Two specimens from Mbity Rocks. 



9. Telmatochromis temporalis, sp. n. (Plate II, fig. o.) 



8 to 12 enlarged conical teeth, tipped with brown, in the outer row in each jaw. 

 Depth of body 3;| to 5^ times in total length ; length of head 3 to 3|. Snout descending 

 in a strong curve, 1^ as long as the diameter of the eye, which is 4| times in length of 

 head and a little less than interorbital width ; maxillary extending to below anterior 

 border of eye ; head naked, or with a few deciduous scales on the opercles. Gill- 

 rakers very short and few. Dorsal XX-XXI 6-7 ; spines increasing in length to the 

 last, which equals 3 to ^ length of head ; middle soft rays produced, § to f length of 

 head. Pectoral f length of head. Ventral produced into a filament, extending beyond 

 origin of anal. Anal VI- VII 6-7 ; spines increasing in length to the last, which 

 equals or slightly exceeds last dorsal ; soft rays produced, like the dorsals. Caudal 

 rounded. Caudal peduncle as long as deep. Scales 43-46 ^ ; lat. 1. g^w- Brown, 

 with small round darker spots between the dorsal, anal, and caudal rays ; a dark 

 horizontal streak behind the eye ; a dark bar at base of pectoral. 



Total length 85 millim. 



Three specimens from Kinyamkolo, and one from Mbity Rocks. 



The deep anterior groove of the skull, in which the ascending processes of the prae- 

 maxillaries are received, extends to the anterior third of the orbits, and the strong 

 occipital crest is prolonged forward to it ; parietal crests are entirely absent ; the 

 chain of suborbital bones is very slender. None of the ribs are sessile, being inserted 

 on a step at the back of the transverse processes of the vertebrae at a short distance 

 from the centre ; all bear epipleurals ; only the last prsecaudal vertebra has a haemal 

 bridge. 



JULIDOCHROMIS, g. n. 



Body elongate ; scales ctenoid. Jaws very narrow, with a few curved canines in 

 front, the outer of which are very large and tusk-like, followed on the sides and behind 

 by minute conical teeth forming a narrow band. Maxillary exposed. Dorsal with 22 

 to 24 spines, anal with 8 or 9. Vertebrae 34 (17 + 17). 



This genus represents an exaggerated type of Lamprologus. The very specialized 

 dentition and the general aspect remind one of the Julidine Labridce, whence the 

 name proposed. 



