342 GANOID FISHES. 



* Large teeth on the maxillaries in a single row; species of 



moderate size, 2 to 5 feet long. . . Lepidosteus, 1. 



** Large teeth on the maxillaries in two rows ; snout broad, 

 depressed, about equal to rest of head ; size large, length 

 5 to 10 feet Litholepis, 2. 



1. LEPIDOSTEUS, Lacepede. Gar Pikes. 



/Sarchiriis, Raf. (Young with the pectoral fins fleshy.) 



* Snout very slender, much longer than the rest of the head. 



(Lepidosteus.) -> 



1. L. osseus, (L.) Ag. Gar Pike. Bony Gar. Bill 

 Fish. Head nearly o in length; depth nearly 12; snout 

 more than twice the length of rest of head; eye nearly 

 2^ in distance to margin of preopercle, more than 2 in 

 interorbital space; ventrals midway between pectorals 

 and anal; olivaceous, white below; sides wdth obscure 

 spots, more evident posteriorly; vertical fins with dis- 

 tinct round black spots; D. 7; A. 9; lat. line 64 to 66; 

 length 2 to 5 feet. N. Y. to the plains and South, 

 abundant in large bodies of water. 



* Snout shortened, rather broad, about a^ long as the rest of the 



head. (Cylindrosteus, Raf) 



2. L. plaiystomus, Raf. Short -Nosed Gar Pike. 



Depth 7 to 8 in length; head 3^; eye 10 in head, three 

 times nearer opercular margin than end of snout; ven- 

 trals much nearer P. than A.; length of head notably 

 shorter than from P. to V.; olivaceous, sides and fins 

 spotted with black; D. 7; A. 8; lat. 1. 60 to 65. Great 

 Lakes and streams S. and W. of N. Y. to Rocky Moun- 

 tiius. 



2. LITHOLEPIS, Rafinesque. Alligator Gars. 

 = Atractosteus^ Raf. 

 1. L. spafula, (Lsic.)Jov. Great Gar. Alligator Gar. 



