A COLLECTION OF FISHES FROM SUMATRA. 521 



on head and back, a few of those on middle of trunk formed into short vertical bars, 

 and those extending out on caudal, soft dorsal, and anal rather numerous. Pectoral 

 plain, deep orange. Ventral, also anal and caudal, tinged with deep orange. Iris 

 pale orange. Peritoneum pale or whitish. 



Length 16|^ inches. 



Type No. 27,546, A. N. S. P. Padang. 



One example. It is closely related to Paracanthistius macidatus Bleeker.^ 

 Distinguished by a number of short vertical dark bars on the middle of side, and 

 the more spotted caudal fin. 



{Pessulus, a little bar ; fero, to bear ; with reference to the short dark vertical 

 bars on side.) 



101. Variola louti (Forskal). 



102. Petrometopon pachycentron (Valenciennes). 



103. Petrometopon formosus (Shaw and Nodder).. 



104. Petrometopon cvanostigma (Valenciennes). 



105. BoDiANUs iNDELEBiLis sp. nov. Plate XVII, lower figure. 



Head 21; depth 2f ; D. IX, 15; A. Ill, 9; P. i, 17; V. I, 5; scales 72 in a 

 lateral series to base of caudal, 15 between origin of dorsal and lateral line obliquely, 

 and about 29 between latter and origin of anal ; pores about 40 in lateral line to 

 base of caudal ; wadth of head 2^ in its length ; depth of head If ; mandible 14- ; 

 fourth dorsal spine 3|- ; seventh dorsal ra}- 24 ; second anal spine 2|^ ; sixth anal 

 ray 2|-; caudal 1^; least depth of caudal peduncle 3|-; pectoral 14; ventral 2; 

 snout 4 in head, from tip of upper jaw; eye 5-^; maxillary 2; interorbital space 7^. 



Body elongate, compressed, and upper profile forming a regular even convex 

 curve to caudal peduncle. Greatest depth about origin of ventral. Caudal pedun- 

 cle compressed, deep, and its length about five-sixths its depth. 



Head rather large, compressed, somewhat pointed, and both profiles more or 

 less convex. Snout short, convex, and upper jaw prominently projecting. Eye 

 small, high, and well anterior. Mouth large, a little inclined, and lower jaw well 

 protruding. Maxillary large, reaching opposite eye posteriorly, and distally ex- 

 panded till equal to four-fifths of orbit. Teeth small, sharp pointed, and inner ones 

 depressable. An outer series of strong erect teeth in each jaw, upper but little if 

 any larger. Lower inner depressable teeth, also those in front of upper jaw, enlarged. 

 Two canines in front of each jaw, well separated, and upper ones twice as far apart 

 as lower. Vomer and palatines with small teeth. Tongue long, narrow, free, and 

 with a rounded tip. Lips thick and tough Nostrils close together near front of 

 eye, and anterior in a short tube. Interorbital space more or less level, wath a 

 depression in front. Margin of preopercle with minute serr*. Three opercular 

 spines, uppermost distant, directed a trifle upward, and lowest most anterior. 



Gill-opening extending forward to middle of orbit. Gill-rakers iv 2 + 11 iv, 

 compressed, about equal to gill-filaments or two-fifths of orbit. Pseudobranchiae 

 about equal to gill-filaments. Isthmus broad, with a broad depression in front and 

 constricted behind, edge not trenchant. 



' Atlas Ichth., VII, 1876, p. 26, plate 291 (13), fig. 3. 



66 JOURN. ACAD. NAT. SCI. PHILA., VOL. XII. 



