. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. 340 Bulletin 4J, United States National Museum. 'si; •. loug. Scales Hmall or wanting. Kibs well developed. Air bladder ])iv. sent, double. Stomach with a blind sac and pyloric ciuca. Ovaries with oviducts. Fresh-water fishes from South America, about thirty Hpocic!^ being known. The group is divisible into two families quite diverse from each other, the one containing the
. The fishes of North and Middle America [microform] : a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Fishes; Fishes; Poissons; Poissons. 340 Bulletin 4J, United States National Museum. 'si; •. loug. Scales Hmall or wanting. Kibs well developed. Air bladder ])iv. sent, double. Stomach with a blind sac and pyloric ciuca. Ovaries with oviducts. Fresh-water fishes from South America, about thirty Hpocic!^ being known. The group is divisible into two families quite diverse from each other, the one containing the singular Electric Eel, {Electrojihonm electricua), which Cope regards as intermediate between the eel-like 8ilii- roids, (ClariidcB), and the Eels. In this group the maxillarics are riuli- mental and the form decidedly eel-like. The remaining species, consti- tuting the suborder Gymnonoti, resemble the Characins rather than the Eels, and hafre no appreciable relationships to the hitter. It seems to ,'m unlikely that any of the Eels are descended from fishes like the Gi/mnon- oti, with the anterior vertebrie modified. The eel-like form of EUriro- phortt8 is probably the result of independent skeletal degradation. (',')///,. notidw, Giinther, Cat., viii, 1-11, 1870.) (yvfivog, naked; vutoc, buck.) Family XL. GYMNOTIDiE. Body elongate, compressed, covered with rather small scales, the lull much produced and usually ending in a point. Mouth small, the teeth moderate, sometimes wanting, the margin of the upper jaw formed partly by the mamillaries. Dorsal fin absent or reduced to an adipose Hti'i]i; caudal fin rudimentary or wanting; no ventrals. Vent close behind I lie head, the anal fin very long. Genera 6; species 30; abounding iu the rivers of South America, with the Charaeinidw, io which group they are probably mos', closely related. (Giinther, Cat., viii, 1-9, 1870.) a. Tail ending in a jioiut witliont flns; no trace of dorsal fin. b. Each jaw with a series of conical teeth.
Size: 837px × 2985px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectfishes, bookyear1896
