11. PARODON. 301 



10. SACCODON. 



Saccodon, Ktier, in Sitzgsber. Acad. Wiss. Munch. 1863, p. 225. 



" Os inferum, nasus prominens ; dentes uniseriales solum inter- 

 maxillares, pauci, cochleariformes, intra alveolos margine crcnatos 

 absconditi ; maxilla superior et inferior edentulae ; labium inferius 

 tiipartitum ; pinnas pectorales et ventrales valde evolutae, abdomini 

 approximata3." 



Ecuador. 



1. Saccodon wagneri. 

 Kner, I. c. 

 B. 4. D. 11. A. 10. P. 17. L. lat. 40. L. transv. 4/3. 



"Caput parvum, nasum versus valde declivum, rostrum tumidnm, 

 decussatum ; dentes insaccati, utrinque quatuor." 

 Ecuador. 



11. PARODON. 



Parodon, Cuv. 8f Vol. xxii. p. 50. 



Dorsal fin placed nearly in the middle of the length of the body, 

 above the ventrals ; anal short. Body oblong, covered with scales 

 of moderate size ; belly rounded. Cleft of the mouth small ; teeth 

 few in number, rather small, in a single series ; those of the inter- 

 maxillary are dilated and finely denticulated at their end, moveable ; 

 the lower jaw has three non-denticulated teeth on each side, the 

 middle being toothless ; the small maxillaries and the palate without 

 teeth. The third infraorbital bone is very large, covering the prae- 

 operculum entirety. Nostrils close together. Gill-openings very 

 wide, the gill-membranes not being attached to the isthmus. 



MaracaYbo, Brazil. 



1. Parodon suborbitalis. 

 Cuv. Sf Vol. xxii. p. 51. pi. 637. 



B. 4. D. 11. A. 9. V. 8. L. lat. 37. 

 The height of the body is one-fourth of the total length (without 

 caudal), the length of the head less than one-fifth. ( Vol.) 

 MaracaYbo. 



Kner (Denkschr. Acad. Wiss. Wien, 1859, xvii. p. 167. taf. 7. fig. 17) 

 distinguishes specimens from the Amazons as a second species, which 

 he calls Parodon nasus ; he says that it has the end of the snout less 

 truncated, and the intermaxillary teeth with more numerous denti- 

 cidations, than P. suborbitalis ; the length of the head is one-fifth of 

 the total (without caudal). 



