382 SCOMHRID.'E. 



series of larger ones on the sides ; the vomerine and palatine bones 

 have a continuous hand of teeth, narrowest on the vomer ; ihe 

 tongue is hard, cartilaginous, and destitute of teeth. 



The cleft of the mouth reaches only to the vertical from the nostrU; 

 the eye is small. 



The pectoral is rounded and small, its length being one-ninth of 

 the total : the ventrals are sUghtly pointed, and, as in all the species 

 of the genus, composed of one spine, hidden in the skin, and four 

 soft rays ; they are inserted immediately behind the vertical from the 

 pectoral, which they equal in length ; they can be received in a 

 shallow groove on the abdomen. The distance between the dorsal 

 and the disk is 3| in the length of the latter ; the dorsal is low, and 

 enveloped in a thick membrane. The caudal is tnmcated when 

 stretched out. The anal is very similar to the dorsal, and its origin 

 and termination fall vertically below those of the latter. 



The scales are minute, and can be perceived only by the aid of a 

 magnifier ; they are imbedded in pore-like cavities. 



inches, lines. 

 Total length of the larger specimen .... 23 

 Total length of the smaller specimen .... 7 11 



Height of the body 10 



Width between the pectorals 1 5 



Length of the head 2 



of the disk 3 5 



Breadth of the disk 1 2 



Length of the pectoral and ventral 10| 



Diameter of the eye 2| 



8. Echeneis lineata. 



Echeneis lineata, 3Ienzies, Trans. Linn. Soc. i. 1791, p. 187. tab. 17. f. 1; 



Bl Schn. p. 240. tab. 5-3. f. 1 ; Lacep. iii. pp. 146, 107 ; Shaw, Zool. 



iv. p. 211 ; Giinth. Ann. i^ Mag. Nat. Hist. May 18(30, p. 898. 

 tropica, Euphrasen, Nya Handl. xii. 1791, p. 317. 



D. 10 I 33. A. 33. 



Body rather slender. Two whitish streaks along each side. 

 Atlantic and Pacific, between the tropics. 



9. Echeneis holbrookii. 



Echeneis albicauda, pt., Dekay, New York Fauna, Fishes, p. 307 (not 



Miich.). 

 ? Echeneis naucrates, Guichen. Fxplor. Ahjer. Poiss. p. 111. 

 Echeneis lineata, Holbr. Ichth. S. Carol. p.lOl. pi. 14. f. 2 (not Menz.). 

 holbrookii, GUnth. Ann. Sf 3Iag. Nat. Hist. May I860, p. 400. 



D. 21 I 35. A. 33. 



The length of the disk is 3-4- in the total, or twice the wdth of the 

 body between the pectorals. Mouth rounded, the lower jaw tenni- 

 nating in a slightly pointed flap. Brown : generally a black band. 



