69. AMMODYTID/E - ARGYROT.ENIA. 415 



Head 4J; depth about 10. D. GO; A. 28. Newfoundland to Cape Hat- 

 teras, abundant. Scarcely different from A. toManus of Europe. 



(DeKay, New York Fauna, Fish. 1842, 317; Giiutber, iv, 366; Storer, Hist. Fish. 

 Mass. ) 



653. A. pcrsonatus Grd. Sand Lannce. 



Clear hyaline green ; sides silvery. Pectoral fin half length of head, 

 reaching past the front of the dorsal. Lateral folds 130-150. Head 4 ; 

 depth 9. Eye 2 in snout, C in head. D. 54; A. 24. L. G inches. 

 Monterey to Alaska, very abundant; probably also a variety of A. 



tobianus. 



(Girard, Proc. Ac. Nat. Sci. Phila. 1856, 137 ; Giintber, iv, 387.) 



651. A. aflascafiius Cope. 



Dorsal inserted above middle of pectoral. Maxillary reaching front 

 of orbit. Mandible less than depth of body. Head 4i ; depth 9. Eye 

 2 in snout, 6 in head. Lateral folds 182. D. G2 ; A. 31. L. 6 inches. 

 SJtka, Alaska. (Cope.) 



(Cope, Proc. Am. Phil. Soc. 1873. Probably also a form of A. toUanus.) 



655. A. dulbius Reiiib. 



Skin with about 150 very distinct folds. Dorsal fin inserted over 

 posterior tbird of pectoral. Head G ; depth equalling length of mandi- 

 ble, 2 in length of head. D. G5; A. 34. Cape Cod to Greenland. 

 (Gunther.) 



(Reinbardt, Dausk. Vidensk. Selsk. Afhaudl. 1838, 132; Giintber, iv, 387.) 



205. ARGYROT^NIA Gill. 



(Gill, Cat. Fisb. East Coast N. Amer. 1881, 40 (not cbaraeterized) : type Amnwdyivs 

 vitlatus DeKay.) 



This genus is supposed to differ from Ammodytes in the presence of a 

 rudimentary spinous dorsal, composed of about 7 minute free spines. 

 )(>s, silver; rat^'a, ribbon.) 



656. A. vittata (DeKay) Gill. 



Greenish olive above, with a broad silvery band along the sides, which 

 is margined above with blackish; silvery below. Body oblong, some- 

 what compressed, slender. Head small and pointed, flattened and 

 grooved above, compressed beneath. Eyes large. Snout terminating 

 in a bifid tip. Mouth rather large, protractile, toothless. Lower jaw 

 longest. D. VII, 54; A. 28. Sag Harbor, New York. (DeKay.} It 

 has not been seen since its description by DeKay, and its existence 

 is extremely doubtful. 



(Ammodytes vittalits DeKay, New York Fauna, Fisb. 1842, 3*8.) 



