OF FISHES FROM LAKE TANGANYIKA, t 
strong spines at the angle; opercular spine as much developed as the latter; clavicle 
with a group of 3 or 4 strong spines. 16 gill-rakers on lower part of anterior arch. 
Dorsal VII, II 11; first and second spines short, third very strong, longest, 3 length 
of head; longest soft rays 3 length of head. Pectoral 3 length of head. Anal III 8; 
spines short, second and third equal. Caudal truncate. Caudal peduncle twice as 
12-13 
0 59-30" 
dorsals spotted with brown ; caudal with irregular brown bars. 
Total length 155 millim. 
Two young specimens from Kinyamkolo. 
This species is closely allied to the widely-distributed Lates niloticus Hasselq. 
Compared to young specimens of the latter, it differs in the smaller scales, the higher 
spinous dorsal, the longer caudal peduncle, aad the shape of the caudal fin, which is 
long as deep. Scales 100-11 Body silvery, spotted and marbled with brown; 
truncate instead of rounded. 
CICHLIDA. 
2. LAMPROLOGUS FASCIATUS, sp. n. (Plate I. fig. 2.) 
A few moderately Jarge curved canine teeth in front of each jaw, followed by a 
narrow band of minute teeth; lateral teeth very small. Depth of body 4 times in 
total length, length of head 3. Snout as long as the diameter of the eye, which is 
3 times in length of head and equals 12 interorbital width; maxillary extending to 
below anterior border of eye; cheeks naked; opercles and occiput scaled. Gill-rakers 
short, 12 on lower part of anterior arch. Dorsal XIX 8; spines increasing in length 
to the last, which measures 2 length of head and nearly equals longest soft rays. 
Pectoral 4 length of head. Ventral reaching vent. Anal X 6; spines increasing in 
length to the last, which slightly exceeds longest dorsal. Caudal rounded. Caudal 
peduncle as long as deep. Scales 46 a lat. 1. — Yellowish, with 11 dark brown 
bars, the first across the vertex ; fins greyish, dorsal and anal edged with blackish. 
Total length 70 millim. 
A single specimen from Kinyamkolo. 
3. LAMPROLOGUS COMPRESSICEPS, sp. n. (Plate I. fig. 3.) 
A few moderately large curved canine teeth in front of each jaw, followed by a 
narrow band of minute teeth; lateral teeth very small, curved. Depth of body 24 to 
23 times in total length, length of head 22 to 23. Head very strongly compressed, 
with concave upper profile; snout a little longer than diameter of eye, which is 
4 times in length of head and equals 13 interorbital width ; maxillary extending to 
below anterior border of eye; cheeks naked; opercles and occiput with small scales. 
Gill-rakers moderately long, 15 on lower part of anterior arch. Dorsal XX—-XXI 6; 
