OP PISHES FROM LAKE TANGANYIKA. 7 



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, f length 

 of head ; longest soft rays f length of head. Pectoral | length of head. Anal III 8 ; 

 spines short, second and third equal. Caudal truncate. Caudal peduncle twice as 

 long as deep. Scales 100-110 ^~. Body silvery, spotted and marbled with brown; 



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 

 truncate instead of rounded. 



CiCHLIDiE. 



2. Lampeologus fasciatus, sp. n. (Plate I. fig. 2.) 



A few moderately large 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 1-J 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 f length of head and nearly equals longest soft rays. 

 Pectoral ^ 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 ^ ; 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. Lampeologus compeessiceps, 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 2^ to 

 2f times in total length, length of head 2| to 2f. 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 IJ 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; 



