386 OPHIDIID^. 



height of the hody is more than the length of the mandibiila, which 

 is two-fifths of that of the head. The length of the head is contained 

 five times and three-fourths in the total. The dorsal fin commences 

 above the middle of the posterior third of the pectoral, and its upper 

 margin is even. Intermaxillary protractile ; vomer without any 

 armature. 



British coasts. German Ocean. 



a. Adult. Brighton. Presented by J. G. Children, Esq. 



b. Adidt. South Devon. Museum Leach. 



c. Many young and half-grown specimens. Wales. Presented by 



Dr. J. E. Gray. 



d. e. Fine specimens. Isle of Arran. Museum Leach. 

 /. Adult. England. Presented by Mr. Moore, 



g, h, i-k. Adult. 



I. Adult: skin. From Gronow's Collection. 



3. Ammodytes siculns. 

 Swainson, Zool. Illttstr. 2nd ser. i. pi. 63. fig. 1. 

 D. 57-59. A. 29. 



Skin without oblique folds ; body naked anteriorly, with rudi- 

 mentary scales posteriorly on the tail. The height of the body equals 

 the length of the mandibula, which is two-fifths of that of the head. 

 The head is contained five times and one-third in the total length. 

 The dorsal fin commences above, or somewhat behind, the extremity 

 of the pectoral. The margins of the dorsal and anal are undulated. 

 Intermaxillary protractile ; vomer not armed. 



Mediterranean. 



a. Adidt : bad state. Sicily. Presented by W. Swainson, Esq. — 



Type of the species. 



b. Half-grown. From the Collection of the Zoological Society. 



c. Six and a half inches long. 



4. Ammodytes americanus. 



Ammodytes tobianus, Mitch. Lit. ^ Phil. Tram. New York, i. p. 363 ; 



Storer, Fish. Massach. p. 159. 

 americanus, Dekay, Netv York Fauna, Fishes, p. 317. pi. 52. 



fig. 167. 



D. 54-60. A. 28-31. 



Skin with 130 oblique, very distinct transverse folds. The height 

 of the body equals the length of the mandibula, which is contained 

 twice and a third in the length of the head ; the latter is one-fifth 

 of the total. The dorsal fin commences above the extremity of the 

 pectoral, and has the upper margin even. Intermaxillary protractile ; 

 vomer not armed. 



Atlantic coasts of the United States. 



a. Five inches long. Presented by the Smithsonian Institution. 



