262 THE CANADIAN NATURALIST. [Aug. 



Genus Anguilla Thunberg. 

 Angvilla Bostoniensis St. ex Les. Eel. (Perley.) 



Anguilla Bostoniensis, Storer, Mem. Am. Ac. viii, 409, pi. 33, fig. 1. 

 The fish (Leptocephatus gracilis, Storer) regarded by me as 

 being probably the larva of the conger, has been found along the 

 coast of Maine. f 



ORDER NEMATOGN T ATHI Gill. 



S1LURID.E (Cuv.) Blkr. 



Baqrinje. 



Genus Amiurus (Eaf.) Gill.J 



Head depressed, with the supra-occipital free behind. Adipose 



fin well developed ; caudal nearly even. 



Amiurus . Cat-fish. (Perley.) 



Species uncertain ; not seen by me. 



ORDER PLECTOGNATHr. 

 SUB-ORDER SCLERODERMI. 

 BALISTID^E Cuv. 

 Balistin^e (Bon.) 

 First dorsal fin with two or three spines. 

 Genus Capriscus Sw. 

 Postbranchial scales enlarged ; dorsal and anal elevated in front. 

 Capriscus fuliginosus Gill ex Dekay. 



Balistes fuliginosus, Dekay, N. Y. Fauna, p. 339, pi. 57, fig. 188. 

 (Nova Scotia. J. M. Jones, Esq., in litt.) 



MONACANTHINiE Kaup. 



Dorsal spine single. 



Genus Stephanolepis Gill. 

 Scales with a coroniform crest. 



Stephanolepis Massachusettensis * Gill ex Storer. (Jones.) 

 Monacanthus Massachussettensis, Storer, Mem. Am. Ac. viii, 425, 

 pi. 34, fig. 4. 



f The Anguilla or Isognatha oceanica Dekay is the American Conger. 



t As the etymology of the name Amiurus has been variously misunder- 

 stood, one deriving it from Amia and ovpa, and another from Atj/i 

 (shovel) and ovpa, it will not be superfluous to state that it alludes to the 

 "tail entire " (Raf), and is formed of the privative a and /xeiovpos (cur- 

 tailed). The name is a most happy one both in its reference to a marked 

 generic characterand in its concordance with its derivatives. 



It may be here remarked that the Siluroids, Mormyroids, Stervar- 

 choids, and Gymnotoids, are closely related. 



