1901.] FISKES or THE WmEB DELTA. 9 



head 24 or 3 times. Snout broad, rounded, with straight or 

 slightly convex upper profile, as long as the diameter of the eye, 

 which is contained 3k to 3| times in length of head and I5 times 

 in interorbital width ;~ maxillary extending to below anterior border 

 of eye ; 3 or 4 series of scales on the cheek ; large scales on the 

 opercle. Gill-rakers short, 10 or 11 on lower part of anterior arch. 

 Dorsal XV-XYI 10-11 ; spines subequal, not quite i length of 

 head ; middle soft rays somewhat produced, | or j; length of head. 

 Pectoral | or | length of head. Ventral produced into a filament, 

 reaching origin of anal or a little beyond. Anal III 8 ; third 

 spine as long as dorsals. Caudal rounded. Caudal peduncle much 

 deeper than long. Scales smooth, with very distinct concentric 

 striation, 28-29 ^^; lat. 1. ^^. Dark olive-brown above,yellowish 

 beneath ; a blackish opercular spot ; three or four vertically 

 elongate large dark spots on each side of the body, below the 

 upper lateral line ; fins greyish, soft dorsal, anal, and caudal 

 chequered with small darker and lighter spots. 



Total length 90 millim. 



Four specimens. 



Allied to the preceding, from which it diiiers chieHy in the 

 shorter snout, the smaller mouth, and the more rounded caudal. 



20. Pelmatocheomis pulcueb, sp. u. (Plate IV. tig. 2.) 



Teeth in 4 or 5 series in each jaw, outer largest. Depth of 

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

 Snout broad, rounded, with convex upper profile, as long as the eye, 

 which is contained 3^ times in length of head and does not quite 

 equal interorbital width ; maxillary extending to between nostril 

 and eye ; 2 or 3 series of scales on the cheek ; large scales on the 

 opercle. Gill-rakers short, 10 to 12 on lower part of anterior arch. 

 Dorsal XVI 9-10 ; spines gradually increasing in length to the 

 last, which measures half length of head ; some of the soft rays 

 more or less produced, often longer than the head. Pectoral | or 

 I length of head. Ventral more or less produced into a filament, 

 reaching origin of anal, or beyond. Anal III 7-8 ; third spine as 

 long as longest dorsal. Caudal rounded or subacuminate. Caudal 

 peduncle as long as deep. Scales smooth, 27-29 -j^f ; lat. 1. -^, 

 Olive, with two darker or blackish longitudinal bands on each 

 side, the upper from the occiput to the base of the soft dorsal, the 

 lower from the eye, over the opercle, to the extremity of the caudal 

 fin ; sides of body below lower lateral band and between pectorals 

 and ventrals of a beautiful rose-colour ; spinous dorsal grey, black 

 at the base, the black area gradually rising to cover nearly the 

 whole of the soft dorsal ; pectoral, outer side of ventral, and 

 extremity of anal blackish ; caudal grey, with an oblique white 

 streak above in the males. 



Total length 95 millim. 



Several specimens. 



Most nearly related to P. subocellatus Gthr., from the Gaboon, 

 but easily distinguished by the proportions of the dorsal spines. 



