PAUATILAPIA. 347 



of scales on tlie clioek, width of scaly part equal to diameter of eye. 

 Gill-rakers short and stout, the larger T-shaped, 7 to 9 on lower part of 

 anterior arch. Dorsal XV-XVI 8-10 ; spines subequal in len<jtli from 

 the seventh or eighth, or increasing in length to the last, about I length 

 of head ; longest soft rays i to | length of head. Anal III 8-9 ; third 

 spine as long as and stronger than longest dorsal. Pectoial as long as 

 or a little shorter than head, extending to vertical of origin of anal. 

 Ventral reaching vent or origin of anal. Caudal rounded-subtruncate, 

 upper rays usually longer than lower. Caudal peduncle ly} to 1| times 

 as long as deep. Scales feebly denticulate, 31-35 ]jriV; 5 lat(>ral lines 

 iri-14* l^i"iglit yellow, irregularly blotched or marbled with black, the 

 black sometimes forming irregular cross-bands on the body ; one or two 

 pale yellow ocellar spots sometimes present on the anal tin. 



Total length 155 millim. 



Lake Victoria and Victoria Nile. 



1-10. Types. Bunjako. Mr. E. Degon ((\). 



11-14. Ty})es. Biiganga. „ 



If). Ad. ^ Sesso Ids. Dr. E. Bayon (C.) ; 



Genoa ]\Iiisouni (P. 



ICi. Ad. Jinja, Kipon Falls. 



211. PARATILAriA RETRODENS. 



Hilgond. Sitzb. Ges. nat. Fr. Berl. 1888, p.-7G ; Boiileng. Proc. Zool. ^oc. 18118, 

 p. 142 ; Pellegr. Mem. Soc. Zool. France, xvi. ll>04, p. 2G7 ; Bouleng. Fi.sli. 

 Nile, p. 480, pi. Ixxxix. Hg. 2 (11)07), and Ann. Mus. Geneva, (:'.) v. ID 11, 

 p. G7. 



Ileimch'omh retrodeus, PfefF. Tliierw. O.-Afr., Fische, p. 19 (189G). 



Depth of body 2^ to 3 times in total length, length of head 3 to 3| 

 times. Head about twice as long as broad, upper profile convex, 

 strongly curved ; snout broader than long, as long as or a little longer 

 than eye, which is 3 J to 4 times in length of head, a little less than 

 interorbital width, and exceeds praeorbital depth ; mouth not very 

 oblique, with very thick lips, extending to below anterior border of eye, 

 or not quite so far; teeth in G to 8 series, 26 to 40 in outer row of 

 upper jaw, outer large and conical in the adult, sometimes oblique on 

 the sides, more or less distinctly bicuspid in the young, the others 

 conical or tricuspid ; 4 to series of scales on the clicek, width of scaly 

 part equal to diameter of eye. Gill-rakers short and stout, the larger 

 bitid or T- or anvil-shaped, 8 or 9 on lower part of autd'ior arch. 



