CICHLID FISHES OF LAKE NYASSA. 



C8J 



of iinterior arch. Middle pharyngeal teeth rather strong, conical 

 in adult. 29 to 33 scales in a longitudinal series, 5 or 6 from 

 origin of dorsal to lateral line. Dorsal XIV-XYI 8-11 ; last 

 spine -f to 2 length of head. Anal III 7-9 ; third spine stronger 

 and usually shorter than last dorsal. Pectoral shorter than head, 

 not reaching anal. Caudal rounded. Caudal peduncle as long 

 as deep. An opercular spot and a dark bar from eye to end of 

 maxillary ; body with or without dark cross-bai'S and a dark 

 lateral band ; dorsal and caudal sometimes spotted ; males with 

 lower fins blackish, the anal with 2 to 6 rounded orange spots. 



Nyassa and Zambezi. 



Numerous specimens, 65 to 140 mm. in total length. 



7. PSEUDOTKOPHEUS, gen. n. 

 (type CJiromis loiUiamsi Giinth.). 



Jaws with several series of teeth anteriorly, the outer bicuspid, 

 the inner small and tricuspid, forming rather broad curved or 

 transverse bands ; uppei- jaw with a series of conical teeth on 

 each side posteriorly, more or less sharply diflerentiated, some 

 or all larger than the last bicuspid teeth ; lower jaw short and 

 l)road, with the lateral margin of the band of teeth incurved, 

 and with a series of teeth on each side behind the band. 

 Dorsal XVI-XIX 8-10. Anal III 7-9. Scales denticulate. 



Xyassa ; five species. 



Text-fio'ure 2. 



•^WaS^i^ll^^jSO 



a. Dentition of FseudotropJieus tropheops. 



b, ,, Tropheus nioorii. 



Si/nopsis of Sjjecies, 

 I. Jaws equal anteriovl}'. 



D. XVI-XVII 9. A. Ill 8. 4 sei'ies of scales on clieek 1. ■williamsi. 



D. XV'IIl 9. A. Ill 9. 5 01- 6 series of scales on cheek 2. eebra. 



IF. Lower jaw shorter tlian npper; mouth rounded. 



I). XVIH 9. A. Ill 8. Depth 3 in length 3. novemfasciafus 



D. XIX 8. A.III7. Depth 3f in length A. aaraius. 



III. Mouth subterminal, transverse; snout verj' convex. 



D. XVII 10. A. Ill 8 b. tmphcops. 



46* 



