606 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Lepisosteus osseus (Linnaeus), PI. XXXVIII. figs. 3, 4. 



Lepidosteus crassus Cope, Proc. Acad. Nat. Sci. Phila., 1865, p. 86. Proba- 

 bly Bombay Hook, Del. 



Head 2f-3$; depth 2f-3| in head; D. 7, seldom 8, rarely 9; A. 9, 

 frequently 8; P. 12, rarely 10, 13 or 14; V. 6, rarely 5; scales 61, 

 seldom 58, rarely 59, 60 or 63; predorsal scales 50, often 49 or 52, 

 seldom 51 ; scales around trunk middle 42 or 44, seldom 41 , 47 or 48 ; 

 snout lf-H in head; eye lf-ly^ to opercle; interorbital 4-fV '> length 

 424-1019 mm. Delaware Bay 1; Potomac R. 4, of which 3 dry; 

 Bayport, Fla., 2 dry; no data 1 dry; Seaford, Del., jaws; Liberty 

 County, Ga., jaws. No. 16,971, A. N. S. P., type of L. crassus Cope 

 (figured). 



The account by Linnaeus is based on Catesby, Bonn., who undoubt- 

 edly had this species in view. Esox viridis, Lepisosteus gavial Lac, 

 Macrognathus loricatus Gray and Lepidosteus milbertii Dum. are other 

 synonyms. This species differs from the smooth-scaled L. huronensis 

 in having the lateral scales, especially anteriorly, rugosely striated. 



Lepisosteus treculii (Dumenl). PL XXXVIII, fig. 5. 



Head 3-3£; depth 4-4^ in head; D. 8; A. 8; P. 12; V. 6; scales 

 58?-60; predorsal scales 51 ; scales around trunk middle 39-43; snout 

 1£ in head; eye 2-2f to opercle; interorbital &-1; length 900-1155 

 mm. Ohio R. 1 (figured) and San Antonio, Tex., 1, both dry skins. 



DumdriPs account is the earliest I find for this species. L. oxyurus 

 Raf. and Lepidosteus leptorhynchus Girard are insufficiently described 

 to permit identification. L. louisianensis Dum. differs in its small eye. 



Lepisosteus clintonii (Dumdril). PI. XXXVIII, fig. 6. 



Head 2£-3i; depth 2f-4 in head; D. 7-8; A. 9. seldom 8; P. 

 12-13; V. 6; scales 58-66; predorsal scales 50-54; scales around 

 trunk middle 46, sometimes 45; snout lf-H m head; eye lf-2£ to 

 opercle; interorbital f-1^; length 365-1178 mm. Delaware R,, 

 just below Trenton, 1 dry (figured); Ohio R. 1 dry; no data 2. 



Lepidosteus thompsoni Dum. has a still smaller eye, though other- 

 wise agrees. 

 Cylindrosteus platostomus (Rafinesque). PI. XXXVIII, fig. 7. 



Head 3£-3f; depth 2^-24, in head; D. 7-8; A. 8; P. 12; V. 6; 

 scales 62-63; predorsal scales 54; scales around trunk middle 47-49; 

 snout If in head; eye If to opercle; interorbital T 9 ¥ ; length 577-582 

 mm. "N.Am.," 2. 



These examples would appear to be Rafinesque' s species as expressed 

 by Kirtland and Dumeril. Kirtland's figure shows eye about If to 

 opercle and rictus width about 3£ in snout length. L. (C) oculatus 



