13. LONCHTTRTJS. 317 



beyo-nd the upper ; the upper maxillary reaches to the posterior 

 margin of the orbit. All the teeth vilhibrm. Praeopereulum with 

 a scaleless, flexible membrane behind, striated and minutely denti- 

 culated. Fins partly covered with thin scales ; the anal spine feeble 5, 

 eaudalis pointed. Coloration uniform. ((7mv.) 

 Surinam. 



13. LONCHURUS. 



Lonchurus, sp., Block, Schneid. p. 102. 

 Lonchurus, Cuv. ^ Val. v. p. 192. 



Body elongate ; muzzle obtuse, with the upper jaw overlapping 

 the lower ; eye small ; mandibula with two barbels. Two dorsals,, 

 the first with ten or eleven feeble spines, the anal with two ; the 

 pectoral and caudal fins very elongate. Scales, moderate. Pseudo- 

 hranchise none ; air-bladder with several long horns ; pyloric append- 

 ages in small number. 



Atlantic coasts of Tropical America. 



1. Lonchurus lanceolatus. 



Perca lanceolata, Block in Nov. Act. Soc. Sc. Copenh. iii. p. 383. 

 Lonchiu'us barbatus, Bl. tab. 360 ; Bl. Schn. p. 102 ; Cur. ^ Vat. r. 

 p. 193. 



D. ll|^. A.|. L. lat. 70. 



The pectoral fin elongate, reaching far behind the vent ; caudal 

 very long and pointed ; ventral elongate. {Bl.) 

 Surinam. 



The descriptions given by the authors above referred to appear to 

 me to have been made from a mutilated specimen of the fish, which 

 in my opinion is the Lonchurus depresms of Schneider. 



2. Lonchurus depressus. 

 Bloeh, Sckneid. p. 102. 



D. 10 I ^. A. |. L. lat. 60. L. transv. ^. Csec. pylor. 4. 

 Vert. 10/19. 

 The upper ray of the pectoral fin very elongate, filifonn, and 

 reaching nearly to the root of the caudal fin; caudal elongate and ter- 

 minating in a point ; the first ray of the ventral elongate, filiform, 

 and reaching to the root of the anal fin. Fins blackish ; pectoral and 

 caudal fins black. 



a. Adult. West Indies. 

 h. Adult. West Indies. 



c. Adult female : skeleton. West Indies. 



d. Half-grown. West Indies. 



Pseudobranchia; none. The form of the air-bladder is very pecu- 

 liar : we may distinguish in it a body and five horns. The body is short. 



