94 MR. G. A. BOULENGER ON A COLLECTION 
sixth or seventh, measuring 4 length of head and 3 longest soft rays. Pectoral obtusely 
pointed, 3 length of head, not extending to origin of anal. Ventral reaching vent. 
Anal III 7; third spine a little shorter than longest dorsals. Caudal truncate. 
Caudal peduncle as long as deep. Scales mostly cycloid, a few on the sides of the 
45 22 
body below the lateral line finely denticulate, 32-33 j) 493 lat. l. 55,:  Olive-brown 
above, pale yellow beneath ; dark cross-bars on the back ; each scale of the back and 
sides with a central vermilion spot; head spotted and marbled with dark purplish 
brown; lower jaw and lower part of opercular region bright yellow ; dorsal and caudal 
fins bright yellow, spotted with dark brown; pectoral yellow; branchiostegal 
membrane, pectoral region, outer edge of ventrals, and anal vermilion-red. 
Total length 120 millim. 
‘Two specimens of this handsomely-coloured fish, which bears the native name 
**Kasanga Malengi ” on M. Dardenne’s coloured sketch. 
15. TILAPIA MICROLEPIS, sp. n. (Plate XX. fig. 3.) 
Teeth very small, in 4 series close together in both jaws, outer larger, bicuspid, with 
a principal and a small lateral cusp. Depth of body 3% to 4 times in total length, 
length of head 3. Snout with straight or slightly convex upper profile, once and a half 
the diameter of the eye, which is nearly 4 times in length of head and equals inter- 
orbital width; mouth moderate, its width 2 that of the head, extending to between 
nostril and eye; 7 or 8 rows of scales on the cheek; larger scales on the opercle. 
Gill-rakers short, rather thick, 13 or 14 on lower part of anterior arch. Dorsal X VI- 
XVII 14-15; spines subequal in length from the fifth or sixth, measuring ¥ length of 
head and alittle shorter than longest soft rays. Pectoral acutely pointed, # length 
of head, not extending to origin of anal. Ventral widely separated from vent. Anal 
III 9; third spine as long as and a little stronger than longest dorsals. Caudal with 
deep crescentic notch. Caudal peduncle twice as long as deep. Scales cycloid, 80-90 
AG—-AQ . . . 
10. Jat. 1, 484°. Pale olive-brown above, white below; faint dark bars across the 
29-30 ? 38-44" 
back and four round dark spots on each side, the last at the root of the caudal; fins 
yellowish. 
‘Total length 115 millim. 
‘Two specimens.—Native name: ‘‘ Mocupi.” 
As in Tilapia desfontainesi, the dentition of this species may be regarded as 
connecting Zilapia with Paratilapia. 
16. TILAPIA GRANDOCULIS, sp. n. (Plate XIX. fig. 6.) 
Teeth very small, in 4 or 5 series in both jaws, of outer series larger, bi- or tricuspid, 
