1898.] STRIATSr PISHES OF THE FAMILY CtCHLIDd:. 141 



7. Pabatilapia eobusta. 



Hemichromis robustus, Griinth. Proc. Zool. Soc. 1864, p. 312. 



Hemichromis jallce, Bouleng. Boll. Mus. Torin. xi. 1896, no. 260. 



2 or 3 series of teeth in the upper jaw, outer largest ; 2 series 

 ill the lower jaw, the inner short and composed of a small 

 number of small teeth. Lower jaw projecting. Depth of body 

 equal to length of head, 3 times in total length. Snout with 

 straight or slightly convex upper profile, twice as long as the eye 

 in the adult ; diameter of eye 5 to 5| times in length of liead, a 

 little less than interorbital width ; maxillary extending to below 

 ■ anterior border of eye or a little beyond ; 7 to 9 series of scales on 

 the cheek ; large scales on the opercle. Gill-rakers short, the 

 larger ones anvil-shaped, with one or two erect cusps, 10 to 12 on 

 lower part of anterior arch. Dorsal XV-XVI 14-15 ; spines 

 increasing in length to the last, which measures \ to \ length of 

 head, and about ^ longest soft rays. Pectoral nearly j length of 

 head. Ventral not reaching vent. Anal III 10-11 ; third spine 

 longest, as long as middle dorsal spines. Caudal truncate. 

 Caudal peduncle a little longer than deep. Scales finely denti- 



5-6 



culate on the edge, mostly cycloid in the young, 37-39 jy^j. , 

 lat. 1. ?i^. Brown above, sih-ery beneath, with two dark bro^^•n 

 or black lateral stripes, the upper running above the upper lateral 

 line, the lower from the opercle to the base of the caudal fin ; 

 fins greyish, dorsal and caudal with round blackish spots between 

 the rays. 



Tot^l length 300 millim. 



Lake Nyassa and Upper Shire Eiver ; Upper Zambesi. 



Entertaining some doubts as to the distinction of Hemichromis 

 jallce, a species established by me on a single small specimen from 

 Kazungula, Upper Zambesi, at a time when I was not acquainted 

 Avith the young of //. rohustus, I have, through the kindness of 

 Prof. Camerano, re-examined the type preserved in the Turin 

 Museum. The result of my examination appears in the abo\e 

 synonymy. 



8. PaBATILAPIA CATIFBOIfS. 



Paratilaina ? cavifrons, Hilgend. Sitzb. Ges. nat. Fr. Berl. 1888, 

 p. 77. 



Hemichromis cavifrons, Pfefifer, Thierw. O.-Afr., Fische, p. 21 

 (1896). 



Teeth in 4 series in the upper jaw, in 3 in the lower, outer 

 largest. Lower jaw projecting. Depth of body a little greater 

 than length of head, 3| times in total length. Snout with concave 

 upper profile, twice as long as the diameter of the ej'e, which is 

 5| times in length of head, and measures nearly g interorbital 

 width ; maxillary not extending to below anterior border of eye ; 

 7 series of scales on the cheek ; large scales on the opercle. Lai'ger 

 gill-rakers expanded and denticulate. Dorsal XVI 8 ; spines 



