10. ANCYLODON. 311 



16. Otolithus microlepidotus. 

 Cuv. 4- Val. V. p. 79. 



D. 91-!-. A.^. L. lat. 160. 



Tho scales covering the operculum twice as large as the others ; 

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

 second doi'sal and anal tins thickly covered with small scales. {Cuv.) 



Suiinam (Berlin Museum). 



17. Otolithus lateoides. 



Bleeker, Jana, i. p. 98, and Verli. Batav. Gen. xxiii. Scicsn. p. IG. 

 I^-10|,-^. A.^^. 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. Prajoperculum 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 (Natuiu-k. Tydschr. Nederl. Ind. 1858, xv. p. 375), in which 

 opinion I cannot conciu', because the latter species appears to have 

 larger scales. 



10. ANCYLODON. 



Ancylodon, Cuv. fy 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. Prajoperculum 

 crenulated. Scales small. Air-bladder with a horn-like process on 

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



Atlantic coasts of Tropical America. 



1. Ancylodon jaculidens. 



Lonchurus ancylodon, Bl. Sclm. p. 102. pi. 25. 

 Ancylodon jaculidens, Cuv. 6r Val. v. p. 81. 



l^-9|iii- ^-g-io- Ctec. pylor. 3-4. Vert. 15/14. 



Lower jaw very prominent. Caudalis pointed. Back greyish ; 

 bides silvery, with indistinct darker oblique cross-etreaks. 

 Atlantic coasts of Tropical America. 



a. Fine specimen, Surinam. 



h. Adult. South America. Presented by Sir R. Schomburgk. 



