CICHLID FISHES OF LAKE NYASSA. 717 



48. Haplochhomis pr^orbitalis, sp. n. (PI. III.) 



Deptli of body 2| to 2| in length, length of head 2|-3. 

 Snout longer than postorbital part of head ; upper profile straight, 

 obliquely descending. Diameter of eye 5 in length of head, 

 interorbital width 4|, depth of prasorbital 3. Lower jaw pro- 

 jecting ; maxillary ending not far behind nostril ; teeth in 3 

 series in upper jaw, 4 in lower, outer bicuspid, about 70 in upper 

 jaw. 4 series of scales on cheek. 9 or 10 gill-rakers on lower 

 part of anterior arch. Pharyngeal teeth small, slender. 35 or 

 36 scales in a longitudinal series, 6 from origin of dorsal to 

 lateral line. Dorsal XV-XVI 12-13 ; last spine f or ^ length 

 of head ; longest soft rays | or .| head. Aual III 10-11 ; third 

 spine stronger than dorsals, f or }^ head. Pectoral a little shorter 

 than head, reaching anal. Caudal emarginate. Caudal peduncle 

 1| as long as deep. Greyish; an opercular spot; dorsal with 

 oblique stripes or series of spots. 



Two specimens, 210 and 240 mm. in total length (Wood). The 

 larger has the dorsal fin higher than the other and the lower fins 

 dusky ; it is probably a male. 



49. Haplochromis compressiceps Bouleng., 1908. 



Paratilcqna covijjressiceps Bouleng. Cat. xlfr. Fish. iii. p. 331, 

 fig. 222. 



Depth of body 3 in length, length of head 2| to 2f . Head 

 4 times as long as broad ; snout a little concave in front of eye, 

 thence straight, longer than postorbital part of head. Diameter 

 of eye 5| to 6 in length of head, equal to interorbital width, from 

 a little more than i to nearly | depth of prseorbital. Lower jaw 

 projecting ; chin deep ; maxillary ending a little behind nostril : 

 teeth conical, in 3 series. 3 or 4 series of scales on cheek. 11 

 to 13 gill-rakers on lower part of anterior arch, Phai*yngeal 

 teeth small. 33 to 35 scales in a longitudinal series, 5 or 6 from 

 origin of dorsal to lateral line. Dorsal XY-XYI 11-13 ; last 

 spine ^ length of head. Anal III 10-11 ; third spine as long as 

 last dorsal. Caudal scaly, truncate. Caudal peduncle 1| to 1| 

 as long as deep. Silvery ; thr,ee yellow-green, bands, .one along 

 upper outline of head and bod}^ the second above upper latei'al 

 line, the third along middle of side. 



The type, 160 mm. long, and 3 specimens of 180-200 mm. 

 (Wood). 



50. Haplochromis macrorhyjsx'hus, sp. n. (Text-fig. 28.) 

 Tilapia rostrata (part.) Bouleng. Cat. Afr. Fish. iii. p. 255. 

 Depth of body 2| to 2| in length, length of head 2| to 2|. 



Snout with straight or convex profile, longer than postorbital 

 part of head. Diameter of eye 5 to 5.1 in length of head, inter- 

 orbital width 3| to 3|, depth of prseorbital 3| to 4. Jaws equal 

 anteriorly ; maxillary not extending to below eye ; teeth in 4 or 



