1899.] STBIAN FISHES OF THE FAMILY OICHMDiE. 125 



32. TiLAPIA TOKAX. 



Chromis vorax, Pfeffer, Jahrb. Hamb. wiss. Anst. x. 1893, 

 p. 151, pi. ii. figs. 9-11, and Thierw. O.-Afr., Eische, p. 12, fig. 

 (1896). 



Teeth very small, in 3 or 4 series in both jaws. Depth of body 

 nearly equal to length of head, 2| to 2| times in total length. 

 Snout with convex upper profile, 1| to 1| diameter of eye, which 

 is 5 times in length of head and nearly twice in intei'orbital width ; 

 mouth large ; maxillary extending to below anterior border of eye 

 or a little beyond ; 3 series of scales on the cheek ; large scales on 

 the opercle. Dorsal XV 12-13 ; middle soft rays much produced, 

 as long as head. Pectoral pointed, nearly as long as head, 

 extending a little beyond origin of anal. Ventral extending 

 beyond origin of anal. Anal III 10 ; soft rays prolonged like 

 the dorsals. Caudal peduncle as long as deep. Scales cycloid, 

 28-31 ^ ; lat. 1. 1^. Dark-olive brown ; a rather indistinct dark 

 opercular spot ; vertical fins blackish. 

 Total length 149 millim. 

 German East Africa and Mozambique. 



33. TllAPIA SIMONIS. 



Chromis simonis, Giinth. Proc. Zool. Soc. 1864, p. 492 ; Lortet, 

 Arch. Mus. Lyon, iii. 1883, p. 143, pi. ix. fig. 1 ; Tristram, Paun. 

 Palest, p. 165, pi. xvii. fig. 2 (1884). 



Chromis paterfamilias, Lortet, C.E. Ac. Sc. Ixxxi. 1875, p. 1197, 

 and La Nature, 1876, p. 81, figs. 



Teeth very small, in 4 or 5 series in both jaws. Depth of body 

 equal to length of bead, 2| to 2| times in total length. Snout 

 with straight upper profile, Ij to 1| diameter of eye, which is 

 4| to 5 times in length of head and Ig in interorbital width ; 

 mouth moderate, § width of head ; maxillary extending to between 

 nostril and eye ; 3 or 4 series of scales on the cheek ; large scales 

 on the opercle. GiU-rakers short and thick, 10 to 12 on lower 

 part of anterior arch. Dorsal XV 9-10 ; last spine longest, g to f 

 length of head, f to | longest soft rays. Pectoral pointed, as long 

 as the head, extending as far as origin of anal. Ventral not 

 reaching vent. Anal III 8-9 ; third spine a little shorter than 

 last dorsal. Caudal rounded. Caudal peduncle as long as deep. 

 Scales cycloid, 30-32 | ; lat. 1. if^f^. Olive, with 6 or 7 rather 

 indistinct darker bars ; opercular spot feebly marked ; a rather 

 indistinct dark spot between the anterior soft rays of the dorsal. 



Total length 180 millim. 



Syria (Lakes of Galilee and Huleh). 



34. TiLAPIA LATA. 



Chromis latus, Giinth. Cat. iv. p. 271 (1862); Steind. Verb. zooL- 

 bot. Ges. Wien, xiv. 1864, p. 227, pi. viii. figs. 1 & 2. 



Chromis niloHcus, part., Steind. Sitzb. Ak. Wien, Ix. 1870, p. 96. 



