S28 cichlim:, 



anterior arch. Darsal XVI 10 ; spines subequal in length, | length 

 of head ; longest soft rays not quite I length of head. Anal HI 7. 

 Pectoral | length of 'head, ^^entral reaching origin of anal. Caudal 

 rounded. Caudal peduncle a little deeper than long. Scales den- 

 ticulate, 30 g; lateral lines ~. Dark olive-brown above, whitish 

 beneath; soft dorsal and caudal fins barred with blackish; a few 

 ocellar dark spots on the anal fin. 



Total length 150 millim. 



Lusorabo, Kasai River, Congo.— Type in Congo Museum, Tervueren. 



13. PARATILAPIA THUMBERGII. 

 Cliromys tliumhergi, Casteh:. Mem. Poiss. A£r. Anstr. p. 13 (18G1). 

 (liromys ngamensis, Casteln. 1. c. 

 ? Cliromys liviiu/stomi, Castehi. I.e. 



JTem'icliromis rohtstus, Giinth. Proc. Zool. Soc. 1804, p. 312. 

 I/emiclironih jalhe, Bouleng. Boll. Mns. Torin. xi. 189(i, no. 260. 

 FaratUapia robvsta, Bouleng. Proc. Zool. Soc. 18'.t8, p. 141, and Poiss. Bass. 



Congo, p. 414 (1901); Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 266. 

 Paratiiapia thumhergii, Bouleng. Proc. Zool. Soc. 1898, p. 146 ; Pellegr. t. c. 

 p. 268; Bouleng. Tr. Zool. Soc. xviii. 1911, p. 412, pi. xli. 

 Depth of body 2| to 3-^ times in total length, length of head 2f to 3 

 times. Head 2 to 2{- times as long as broad, upper profile straight 

 or slightly convex or slightly concave; lower jaw projecting; snout 

 obtusely pointed, as long as broad, shorter than postocular part of head; 

 eye 4| (young) to 6 times in length of head, nearly equal to or a little 

 less than interorbital width or prgeorbital depth ; mouth extending to 

 below anterior border of eye or a little beyond ; teeth moderate, in 

 2 to 4 series, 48 (young) to 80 in outer series of upper jaw ; 7 to 9 

 series of scales on the cheek, width of scaly part 1^ to 2 diameters of 

 eye. Gill-rakers moderately long, some of the posterior usually bifid 

 or trifid, 10 to 12 on lower part of anterior arch. Dorsal XV-XVIII 

 13-16 ; spines increasing in length to the last, which is -J to f length 

 of head ; longest soft rays ^ to | length of head. Anal III 10-12 ; 

 third spine ^ to ^ length of head. Pectoral f to § length of head, not 

 extending to vertical of origin of anal. Ventral usually not reaching 

 vent or anal. Caudal rounded or rounded-subtruncate. Caudal 

 peduncle as long as deep or a little longer than deep. Scales feebly 

 denticulate, sometimes cycloid, 35-41 ||^t; lateral lines ^^. Dark 



