12 ME. G. A. BOULENGER ON A COLLECTION 



10. JuLiDOCHROMis ORNATUS, sp. n. (Plate II, fig. 4.) 



4 or 6 canines in each jaw, tipped with brown. Depth of body 4 to 4| times in 

 total length, length of head 3J to 3i. Snout IJ to twice as long as diameter of eye, 

 which is 4i to 5 times in length of head and 1| in interorbital width ; maxillary 

 extending to below nostril ; cheeks naked ; opercles scaled. Gill-rakers very short and 

 few. Dorsal XXII-XXIV 5 ; spines equal from the eighth or tenth, ^ length of head ; 

 longest soft rays ^ to § length of head. Pectoral about f length of head. Ventral 

 produced in a filament, reaching origin of anal. Anal VIII-IX 4-6 ; spines increasing 

 in length to the last, which equals f length of head. Caudal rounded. Caudal peduncle 

 as long as deep. Scales 45-50 j^; lat. 1. f^. Yellowish, with three dark brown 

 stripes on each side, the lower from the end of the snout to the base of the caudal, the 

 upper along the base of the dorsal ; a large round dark-brown spot on the base of the 

 caudal ; a small black spot at the base of the pectoral ; anal edged with brown ; 

 caudal brown. 



Total length 85 millim. 

 Five specimens from Mbity Eocks. 



The prsemaxillary groove is deep and extends to the anterior third of the orbits ; the 

 occipital crest is low and continued forward to the praemaxillary groove ; parietal 

 crests are present, but very feeble ; the chain of suborbital bones is replaced by a 

 ligament ; the mandible is very massive, the lower surface flat, projecting as a keel on 

 the sides. The ribs are inserted on a step of the transverse processes, at a short 

 distance from the centre ; all bear epipleurals ; only the last prsecaudal vertelira has a 

 haemal bridge. 



11. Paeatilapia pfeffeki, sp. n, (Plate III. fig. 1.) 



Teeth small, in 3 series in each jaw, forming a narrow band, outer largest. Depth 

 of body equal to length of head, 2§ times in total length. Snout with straight upper 

 profile, as long as eye, the diameter of which is d^ times in length of head and equals 

 ]-| interorbital width ; maxillary extending to below anterior border of eye ; 3 series of 

 scales on the cheek ; large scales on the opercle. Gill-rakers rather long, 11 on lower 

 part of anterior arch, the larger spatulate. Dorsal XVI 8 ; spines increasing in length 

 to the sixth, which measures a little less than | length of head and nearly equals 

 longest soft rays. Pectoral f length of head. Ventral reaching origin of anal. Anal 

 III 7; third spine longest, as long as longest dorsal. Caudal feebly emarginate. 

 Caudal peduncle 1^ as long as deep. Scales very finely denticulate on the edge, 33 - ; 

 lat. 1. jgEii- P^l^ olive above, silvery beneath, with seven darker vertical bars ; fins 

 greyish brown. 



Total length 76 millim. 



A single specimen from Kinyamkolo. 



