com US. 



0/ 



uitii broad hasnl membrane, its cxtremitj- widely separated from vent. 

 Caudal rounded, J to once length of Iiead, Caudal peduncle Ij to Ih 

 times as long as deep. Scales ciliated, 5-3-63 in longitudinal series, 1-5- 

 17 in transverse series Intween dorsal and anal. Brownish, with darker 

 dots and small spots ; first dorsal with a large black spot in its posterior 

 third; second dorsal and caudal with small dark spots ; fins sometimes 

 dark purj)lisli brown. 



Total length 210 millim. 



^ladagascar and Muscarene Islands; Tahiti, Samoa, Harotonga, and 

 ^ iti Leva; confined to fresh waters. 



i. Ad. Tiunatave, Madagascar. P^iris Mii-;puni (E.). 



2-'.). Yg. Rodrjonez. ( i. (iuUivt-r, Es(j. ( i'.). 



Fig. 20. 



(johiiis sclileijelii. 

 Bissau. 



IS. (loiurs s('Iii.i:(;klii. 



(iiinlli. Cat. Fi-li. iii. )>. 4(1 (l.S(')l); Block. Nat. Vt-rii. (Jen. Ilaailpiii, (l') 

 xvlii. LSi;;'), p. Ii>:'>. ]il. \iii. lig. 1. 



Bodv strongly compressed; de])th of body 4 to "> times in total 

 length, length of head 3| to .S| times. Head ]| to 2 times as long as 

 broad, naked ; snout rounded, as long as or a little longer than eye, 

 whirli is 1 to 5 times in length of head ; interorbital space very 

 narrow; lower jaw projecting; mouth extending to below anterior 

 border or anterior tliird of eye; teeth in a narrow band, outer 

 enlarged; a curved canine on each side of lower jaw often present. 

 Dorsals VI. I 9-10, narrowly separated, longest ray |- to | length of 

 head. .\nal I 8-9. opposite to second dorsal. Pectoral as long as or a 

 little loniier than head. Ventral reacliing vent or not quite so far. witii 

 abroad l)asnl membrane, each side of which is pointed and produced. 

 Caudal pointed, the )nodian rays more or less produced, 1 ^ to 2 times 



