12 MR. G. A. BOULENGER ON A COLLECTION 
10. JULIDOCHROMIS ORNATUS, sp. n. (Plate IT. fig. 4.) 
4 or 6 canines in each jaw, tipped with brown. Depth of body 4 to 43 times in 
total length, length of head 34 to 34. Snout 14 to twice as long as diameter of eye, 
which is 43 to 5 times in length of head and 13 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 4 to 2 length of head. Pectoral about 2 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 2 length of head. Caudal rounded. Caudal peduncle 
aslong asdeep. Scales 45-50 rig lat. 1. a 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 Rocks. 
The premaxillary groove is deep and extends to the anterior third of the orbits ; the 
occipital crest is low and continued forward to the premaxillary 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 preecaudal vertebra has a 
hemal bridge. 
11. PARATILAPIA PFEFFERI, 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, 23 times in total length. Snout with straight upper 
profile, as long as eye, the diameter of which is 3} times in length of head and equals 
1} 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 &; spines increasing in length 
to the sixth, which measures a little less than 3 length of head and nearly equals 
longest soft rays. Pectoral $ length of head. Ventral reaching origin of anal. Anal 
III 7; third spine longest, as long as longest dorsal. Caudal feebly emarginate. 
Caudal peduncle 14 as long as deep. Scales very finely denticulate on the edge, 33 = 5 
lat. 1. oe Pale olive above, silvery beneath, with seven darker vertical bars; fins 
greyish brown. 
Total length 76 millim. 
A single specimen from Kinyamkolo. 
