PAHATILAPIA. 467 



Teeth in six to eight series ; last 4 or 5 dorsal spines equal in length ; 



snout as long as eye 6. P. grardi, Blgr. 



Teeth in four series ; dorsal spines increasing in length to the last ; 



snout a little shorter than eye 7. P. cinerea, Blgr. 



II. Lips very thick ; D. XV-XVI 8-10. 

 Teeth in three to six series, 30 to 50 in outer row of upper jaw ; 8 or 



9 soft anal rays ; Sq. 31-37 ~ S. P. bicolor, Blgr. 



Teeth in six to eight series, 26 to 40 in outer row of upper jaw ; 9 or 



10 soft anal rays ; Sq. 34-40 jg=jg 9- P. retrodens, Hilg. 



Teeth in three or four series, 20 to 34 in outer row of upper jaw ; 8 or 



9 soft anal rays ; Sq. 31-33 ~ 10. P. crassilabris, Blgr. 



1. PARATILAPIA LONGrlROSTKES. 

 (Plate LXXXVI. fig. 2.) 



Hilgendorf, Sitzh. Ges. nat. Fr. Berl. 1888, p. 77. 



Hemichromis longirostris, Pfeffer, Thierw. O.-Afr., Fische, p. 20 (1896). 



Depth of body three to four and one-fifth times in the total length, length of head 

 twice and three-fifths to three and one-fourth times. Head large ; snout with straight 

 or convex upper profile, once and one-fifth (young) to twice as long as the eye, which 

 is three (young) to five and a half times in the length of the head, once to once and 

 one-third in the interorbital width, and far less than the depth of the scaly part of the 

 cheek below the eye in the adult; lower jaw strongly projecting, the chin pointed; 

 maxillary far from reaching to below anterior border of eye ; teeth, in the adult, in 

 four or five series in both jaws, the outer long, feebly curved, and rather far apart, the 

 inner very small and also unicuspid or partly tricuspid ; in the young, outer teeth 

 bicuspid, inner tricuspid ; three to five series of scales on the cheek ; large scales on 

 the opercle. Gill-rakers short and stout, 8 to 11 on lower part of anterior arch. 

 Dorsal fin with 14 to 16 spines and 9 or 10 soft rays; spines increasing in length to 

 the last, which measures one-third to two-fifths the length of the head ; longest soft 

 rays two-fifths to one-half the length of the head. Anal fin with 3 spines and 8 to 

 10 soft rays ; third spine as long as or a little shorter and stronger than the last 

 dorsal. Pectoral fin acutely pointed, two-thirds to three-fourths the length of the 

 head, not reaching the vertical of the origin of the anal. Ventral fin reaching the vent 

 or the origin of the anal fin. Caudal fin rounded or subtruncate. Caudal peduncle 



3o2 



