78 
THE TANGANYIKA PROBLEM. 
39. Paratilapia aurita. — Blgr. 1901. (Fig-, p. 195, middle.) 
Depth of body, 3 to 3} times in total length ; length of head, 3} to 3J times. 
Snout short, as long or a little shorter than the eye, with slightly curved upper 
profile ; lower jaw not projecting beyond the upper ; diameter of the eye, 3} to 3 
times in length of head, equal to or greater than interocular width ; maxillary 
extending to below anterior fourth or third of eye ; teeth in 2 or 3 rows, the outer 
much larger than the others ; 4 or 5 series of scales on the cheek ; large scales 
on the opercle. Gill-rakers short, 10 or 12 on lower part of anterior arch. Dorsal 
XV.-XVII. 9-10 ; spines increasing in length to the last, which is a little less than 
half length of head ; the longest soft rays produced into filaments, and only a little 
shorter than head. Pectoral pointed, as long as head. Ventral produced in a filament, 
and extending to vent or beyond. Anal III. 8 ; third spine stronger and shorter 
than the last dorsal spine. Caudal feebly emarginate. Caudal peduncle, ii times as 
3=1 ; lat. I. 
Brownish, with or without oblique cross bars of mother-of-pearl or silvery white, 
sometimes with ill-defined dark bars across the back ; a very distinct, blue-black 
opercular spot ; dorsal and anal grey or blackish, often striated or spotted with white ; 
the membrane between the dorsal spines edged with black ; anal sometimes 
blackish. 
Total length, i3omillim. 
Described from numerous specimens from Msambu. 
40. Paratilapia bloyeti. — Sauv. 1883. 
long as deep. Scales with finely denticulate border, 35-36 
41. Paratilapia pfefferi. — Blgr. 1898. (Fig., p. 205, middle.) 
Teeth small, in 3 series in each jaw, forming a narrow band, outer largest. 
Depth of body equal to length of head, 2 \ 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 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. 8 ; spines increasing in length to the sixth, which measures a little 
less than £ length of head and nearly equals longest soft rays. Pectoral J length of 
head. Ventral reaching origin of anal. Anal III. 7 ; third spine longest, as long 
as longest dorsal. Caudal feebly emarginate. Caudal peduncle ii as long as deep. 
2 1 — 22 
Scales very finely denticulate on the edge, 33?; lat. 1. . Pale olive above, 
1 2 13 
silvery beneath, with seven darker vertical bars ; fins greyish brown. 
Total length, 76 millim. 
Described from a single specimen from Kinyamkolo. 
42. Paratilapia calliura. — Blgr. 1901. (Fig., p. 175.) 
Depth of body 4 to 4! times in total length ; length of head, 3 to 3.J times. 
Snout pointed, with straight upper profile, as long as or a little shorter than the 
