or FISHES FEOM LAKE TANGANYIKA. 9 



Uniform brown; soft dorsal and caudal fins with round black spots between the 

 rays. 



Total length 75 millim. 



A single specimen from Mbity Rocks, and another from Kinyamkolo. 



6. Lampkologus elongatus, sp. n. (Plate I. fig. 6.) 



fi to 8 large canine teeth in front of each jaw, followed by a broad band of minute 

 villiform teeth ; lateral teeth very small. Depth of body 4 times in total length, 

 length of head 2f to 2f . Snout twice as long as diameter of eye, which is 5 times in 

 length of head and equals interorbital width ; maxillary extending to below anterior 

 border of eye ; cheeks naked ; opercles and occiput scaled. Gill-rakers moderately 

 long, 12 on lower part of anterior arch. Dorsal XVIII 10-11 ; spines slightly 

 increasing in length to the last, which measures -J length of head ; longest soft rays 

 half length of head. Pectoral half length of head. Ventral reaching vent. Anal 

 V 8 ; spines increasing in length to the last, which equals longest dorsal. Caudal 

 truncate. Caudal peduncle 1 J as long as deep. Scales 90-95 g^ ; lat. 1. |^- 



Brown, with darker spots having a tendency to form cross-bars ; caudal fin with round 

 dark spots between the rays. 



Total length 113 millim. 



One specimen from Mbity Eocks, and one from Kinyamkolo. 



7. Lampkologus furcifee, sp. n. (Plate II. fig. 1.) 



A few large curved canine teeth in front of each jaw, followed by a moderately 

 broad band of minute villiform teeth ; lateral teeth very small. Depth of body 4 to 4^ 

 times in total length, length of head 2|- to 3. Snout as long as or a little longer than 

 diameter of eye, which is 3^ to 3f times in length of head and exceeds interorbital 

 width ; maxillary extending to below anterior fourth of eye ; cheeks and opercles with 

 deciduous scales. Gill-rakers short, 16 on lower part of anterior arch. Dorsal 

 XX-XXI 7-8 ; spines increasing in length to the last, which measures f length of 

 head ; middle soft rays produced, f to | length of head. Pectoral | length of head. 

 Ventral reaching vent or origin of anal. Anal VI- VII 6 ; spines increasing in length, 

 the last nearly as long as last dorsal ; middle soft rays produced. Caudal deeply 

 notched, crescentic. Caudal peduncle 1^ as long as deep. Scales 50-54 y— ^ ; lat. I. 

 ff~^i; lower lateral line often nearly complete. Dark brown, with very indistinct 

 blackish bars on the body ; dorsal and caudal with round black spots between the 

 rays ; tips of the caudal lobes whitish. 



Total length 125 millim. 



Three specimens from Kinyamkolo, and one from Mbity Eocks. 

 VOL. XV. — PART r. No. 2. — December, 1898. c 



