10. ANCTLODON. 311 



16. Otolithus microlepidotus. 



Cuv. S,- Val. V. p. 79. 



D. 9 I -i-. A. ^. L. lat. 160. 



The scales covering the operciiliim twice as large as the others ; 

 the lower jaw projecting beyond the upper. CaudaJis rounded ; the 

 second dorsal and anal fins thickly covered with small scales. {Cuv.) 



Sui-inam (Berhn Museum). 



17. Otolithus lateoides. 



Sleeker, Java, i. p. 98, and Verh. Batav. Gen. xxiii. Scieeti. p. 16. 

 D. 10 I ^-T^. A. .2-. L. lat. 100. 



The height of the body is rather less than one-fifth of the total 

 length, the length of the head two-ninths. The snout is not ob- 

 tuse, and nearly equals in length the diameter of the eye, which is 

 one-SLxth of the length of the head ; the lower jaw longest ; canines 

 in both the jaws, of moderate size. Prajopercidum scarcely denticu- 

 lated. The caudal fin elongate, pointed. Coloration uniform : the 

 dorsal fins spotted with brown ; the spots of the second dorsal ar- 

 ranged in two longitudinal series. (Bl.) 



Sea of Batavia. 



This species is now referred by Bleeker himself to Otolithus ar- 

 genteus (Natuurk. Tydschr. Nederl. Ind. 1858, xv. p. 375), in which 

 opinion I cannot concur, because the latter species appears to have 

 larger scales. 



10. ANCYLODON. 



Ancylodon, Cuv. ^- Val. v. p. 80. 



Body oblong ; muzzle with the lower jaw projecting and the cleft 

 of the mouth oblique. Two dorsals, scarcely united or entirely sepa- 

 rated ; the first -with seven or nine feeble spines ; anal spines feeble. 

 Very long canine teeth, arrow-shaped or lanceolate. Prseoperculum 

 crenulated. Scales smaU. Aii'-bladdcr with a horn-like process on 

 each side, directed forwards. Pyloric appendages in small number. 



Atlantic coasts of Tropical America. 



1. Ancylodon jaculidens. 



Loncliui'us ancylodon, Bl. Schn. p. 102. pi. 25. 

 Ancylodon jaculidens, Cuv. ^ Val. v, p. 81. 



^•^Idrg- ^-g^io- Caec. pylor. 3-4. Vert. 15/11. 

 Lower jaw very prominent. Caudalis pointed. Back greyish ; 

 sides silvery, -with indistinct darker obUque cross-streaks. 

 Atlantic coasts of Tropical America. 



a. Fine specimen. Surinam. 



b. Adult. South America. Presented by Sir- R. Schomburgk. 



