330 LJiPIDOSTJiiDJi. 



Snout rather broad, spatulate, the length of the cleft of the mouth 

 being about one-half of the length of the head. There are seven- 

 teen Bcales in an oblique series ascending obliquely forward from 

 the root of the ventral to the median line of the back. Teeth of the 

 palatine bones equally minute. 



United States. 

 a-^. From 2 to 3 feet long : stuffed. Louisiana.— (One is the type 

 of L. grayi, Agass.) 



Mr. Cope distinguishes Cylindrosteus productus from Texas, Proc. 

 Ac. Nat. Sc. Philad. 1865, p. 86 ; it has a narrower snout than 

 typical examples of L. platystomus, the frontal breadth being con- 

 tained five times and a half in the upper part of the head in C. pro- 

 ductus, and only four times and a half, or even less, in L. pdatijstomm. 



3. Lepidosteus osseus. 

 Acus maxima squamosa, iVillughby, Append, p. 22. 

 Esox, sp., Artedt, Gen. p. 14. no. 3, and Synon. p. 27. no. 3. 

 Esox os3eus, L. Syst. Nat. i. p. 516 ; Bl. tab. 390 ; Bl. Schn. p. 392 ; 



Mitch. Trans. Phil. Sf Lit. Soc. N. York, i. p. 444. 

 ? Chifis, Parra, p. 109, lam. 40. fig. 1. 

 Lepisosteus gavial^s, LacSj}. v. p. 333; Gmchenot, Mag. Zool. 1«3J, 



Poiss. p. 5. , T» T- 

 oxyurus, (Baf.) KiHland, Beport, pp. 170, 196, and Bost. Journ. 



Nat. Hist. iv. p. 16, pi. 1. fig. 1 ; Cope, Proc. Ac. Nat. Sc. PhU. 1865, 



p. 87. 

 Sarchirus vittatus, Bqfinesque. 

 Lepisosteus huronensis, Bichards. Faun. Bor.-Amer. ui. p. 237 ; Cope, 



——gracilis, Agass. Poiss. Foss. ii. 2. p. 3 ; Bichards. I. c. p. 240. 



bison, Dekai/, New York Faun. Fish. p. 271, pi. 43. fig. 139. 



semiradiatus, Agass. Poiss. Foss. ii. 2. p. 2, tab. A. fig. med. & 



B. figs. 1-14 ; Miiller, Abhandl. Ak. Wiss. Berl. 1844, pi. 2. 



lineatus, Thompson, History of Va-mont, p. 145. 



osseus, Agass. Poiss. Foss. ii. 2. p. 2, tab. A-B" ; Stover, Mem. 



Am. Acad. ii. p. 465 ; Cope, I. c. p. 87. -, ^. , o^i 



leptorhynchus, Girard, U. S. Pac. B.B. Exped. Fish. p. 351. 



crassus, Cope, I. c. p. 86. 



otarius. Cope, I. c. 



longirostris, Cope, I. c. 



Snout narrow, much elongate. There are from twelve to fourteen 

 scales in an oblique series ascending obliquely forward from the root 

 of the ventral to the median line of the back. Mature examples 

 have only one series of large teeth in the upper jaw ; but in young 

 ones (to 12 inches) there is a very complete second series along the 

 palatine bones. Traces of this second series may be observed some- 

 times in examples 24 inches long ; but in older specimens the pala- 

 tines are armed with equally minute teeth. 



North America. 



«, h. Five feet long : stuffed. Louisiana.^ Presented iiy W. P. 



Smith, Es(i. 



