CLASS PISCES. 387 



Pcecilia, Schn. 



Have the two jaws flatted horizontally, protractile, 

 but little cleft, furnished with a single range of small 

 and very fine teeth ; the upper part of the head flat, 

 the opercula large, fine rays to the gills, the body but 

 little elongated, the ventrals not very far back, and 

 the dorsal just above the anal. They are small vi- 

 viparous fishes of the fresh waters of America \ 



Lebias, Cuv. 



Resemble pcecilia, with the exception that their teeth 

 are denticulated. 



There is a species in Sardinia (Pcecil. calantana, 

 Bonnelli). Avery small fish marked with little blackish 

 rays upon the flanks 2 . 



Fundulus, Lacep. 



Have also many relations with pcecilia ; but their 

 teeth are small and crowded, and those of the an- 

 terior range are bent ; they have some conical teeth 

 rather strong at the pharynx : there are but four rays 

 to the gills 3 . 



1 Pcecilia Schneideri, Val., or P. vivipara, Schn. 86, 2. ; P. mul- 

 tilineata, Lesueur, Journ. Sc. Philad. Jan. 1821, pi. i. ; P. unima- 

 cula, Val. App. Humb. Obs. Zool. ii. pi. li. 2. ; P. Surinamensis, 

 Id. ib. p. 1. 



2 Add Lebias ellipse-idea, Lesueur, Ac. Sc. Philad. Jan. 1821, pi. 

 ii. f. 1. and 3. ; Leb. rhomboidalis, Val. Ap. Humb. Obs. Zool. ii. 

 pi. li. 3. ; Leb. fasciata, Id. ib. 4. 



3 Fundulus ccenicolus, Val., or Cobitis heteroclita, Lin., or Pcecilia 



c c 2 



