n. PAKrtDON. 301 



1(1. SACCODON. 

 Saccodon, K)wr, in Sitzgsbei: Acad. Wiss. Miinch. 1863, p. 225. 

 " Os infenim, nasus prominens ; dentcs uniscrialcs solum intor- 

 maxillaros, pauei, cochlearifomies, intra alveolos margiiio creualns 

 absconditi ; maxilla superior et infei'ior edentulse ; labium int'erius 

 tripartituin ; pinnae pectorales et ventrales valde evolutae, abdomini 

 approximatae." 

 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 tumiduin, 

 decussatum ; dentcs insaccati, utrinque quatiior." 

 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- 

 maxillarj- 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 pree- 

 operculum entirely. Nostrils close together. Gill-openings very 

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



MaracaVbo, Brazil. 



1. Parodon suborbitalis. 

 Cuv. 4- Val. 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 (witliout 

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

 MaracaVbo. 



Kner (Denkschr. Acad.Wiss.Wien, 1859, x\-ii. p. 167. taf. 7. fig. 1 7) 

 distinguislies specimens from the Amazons as a second species, which 

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

 truncated, and the intermaxillary teeth with more numerous dcnti- 

 culations, than P. .'nihorhitalis ; the length of the head is one-fifth of 

 the total (without caudal). 



