CICHLID FISHES OF LAKE NYASSA. 



707 



not less than depth of cheek. Jaws equal anteriorly ; maxillary 

 extending to below anterior edge of eye ; lips thick ; teeth in 

 4 or 5 well-separated series, conical, or outer bicuspid and inner 

 tricuspid in young, 40 to 50 in outer series of upper jaw. 3 or 4 

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

 anterior arch. Lower pharyngeal stout ; middle teeth conical or 

 slightly compressed, moderately strong, set well apart, only 8 in 

 the series on each side of middle line. 33 scales in a longitudinal 

 series, 5 from origin of dorsal to lateral line. Dorsal XY-XVII 

 10-11; last spine about f length of head. Anal III 9; third 

 spine stronger than dorsals, i to | head. Pectoral as long as 



Text-fio-ure 20. 



-*si- _, 



^^%\f 



Saplocliroinis inelanoteenia . -s-. 



head, reaching anal. Caudal truncate or slightly emarginate. 

 Caudal jjeduncle 1+ to 1|- as long as deep An opercular spot ; a 

 blackish band from nape to caudal ; series of orange spots on 

 dorsal. 



Three specimens, 120 to 170 mm. in total length (Wood). 



31. Haplochromis guextheri, sp. n. 



Chj-oviis laieristriga (part.) Glinth. P. Z. S. 1864, p. 312. 



Tilapia lateristriga (part.) Bouleng. Oat. Afr. Fish. iii. p. 253, 

 fig. 170. 



Paratilapia dimidiata (part.) Bouleng. t. c. p. 360. 



Depth of body 2^ to 3 in length, length of head ?A to 3:^. 

 Snout with straight or slightly convex profile, shorter than post- 

 orbital part of head. Diameter of eye 3^ to 5 in length of head, 

 greater (young) or less (adult) than depth of prpeorbital, less than 

 dej)th of cheek ; interorbital width about 4 in length of head. 

 Lower jaw a little shorter than upper ; maxillary not extending 

 to below eye; teeth in 3 or 4 series, outer bicuspid in young, 

 conical in adult, 40 to 70 in outer series of upper jaw ; anterior 

 outer teeth of lower jaw directed outwards. 3 or 4 series of 



