384 OPHTDIIDJE. 



9, Pierasfer lumbricoides. 



Oxybeles lumbricoides, Bleek. Natuurk. Tychchr. Nederl. Ind. vii. 1854, 

 p. 163. 

 The height of the bftdy is one-half of the length of the head, which 

 is contained twenty-one times in the total (without a portion of the 

 tail, which has been lost in the single specimen known). {Bleelc.) 

 Ceram. 



12. ENCHELIOPHIS. 



Encheliophis, MiiU. Abhandl. Berl. Acad. 1843, p. 153. 



Body compressed ; tail tapering to a longhand. Vertical fins united, 

 low ; no pectorals, no ventrals. Gill-membranes united below the 

 throat, not attached to the isthmus. Vent situated immediately behind 

 the gill-opening. Branchiostegals six ; air-bladder with a Inuscular 

 apparatus for dilatation of its anterior part. 



Philippines. 



1. Encheliophis vermicularis. 



Mail. I. c. p. 154. taf. 5. figs. 4 & 5. 

 Uniform blackish-brown. — Length 4 inches. 

 Phihppines, 



Fourth Group. AMMODYTINA. 



No ventral fins whatever ; vent remote from the head ; gill-openings 

 very wide, the gill-membranes not being united. 



13. AMMODYTES*. 



Ammodytes, Artedi, Genera, p. 16. 



Body elongate, low, subcylindrical, covered with very small scales. 

 Skin with longitudinal folds extending along the whole length of the 

 belly. One long dorsal and anal, composed of feeble short rays which 

 can be received in a groove. Jaws without teeth ; the lower pro- 

 minent. Gdl-opening very wide, the gill-membranes not united; 

 branchiostegals seven or eight ; gills four, a cleft behind the fourth ; 

 pseudobranchiae composed of lamellae ; air-bladder none. Pyloric 

 appendage one. 



Mediterranean. Temperate parts of the North Atlantic. Coast 

 of California. 



A. Vomer anteriorly with a tooth -like bicuspid prominence : Hyper opltis, m. 

 1. Ammodytes lanceolatus. 



The Greater Sand-Eel or I>,aunce. I)erSand-aa,l. Hvit-Tobis (Sweden). 

 Ammodytes, Jago in Ray, Syn. Pise. p. 165. tab. 2. fig. 12. 



* 1. Ammodytes vittatus, Dekay, New York Fauna, Fishes, p 318 pi GO 

 fig. 197.— Coasts of New York. • f ■ 



