Jordan and Evermann. Fishes of North America. 2271 



the sides; the vomerine and palatine bones have a continuous band of 

 teeth, narrowest on the vomer; the tongue is hard, cartilaginous, and 

 destitute of teeth. The cleft of the mouth reaches only to the vertical 

 from the nostril; the eye is small. The pectoral is rounded and small, its 

 length being y of the total ; the ventrals are slightly pointed, and, as in 

 all the species of the genus, composed of 1 spine, hidden in the skin, 

 and 4 soft rays ; they are inserted immediately behind the vertical from 

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

 low groove on the abdomen. The distance between the dorsal and the 

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

 a thick membrane. The caudal is truncated when stretched out. The 

 anal is very similar to the dorsal, and its origin and termination fall ver- 

 tically below those of the latter. The scales are minute, and can be per- 

 ceived only by the aid of a magnifier; they are embedded in pore-like 

 cavities. (Gtinther: description of type of Echeneis scutata.) Tropical 

 seas; rare; recorded by Dr. Liitken from 10 N., 39 W. (Coll. Capt. V. 

 Hygom) from a dolphin; not seen by us. (australis, southern.) 



Echeneis australis, BENNETT, Narr. Whaling Voyage, n, 273, pis. 24-26, 1840. 

 Echeneis scutata, GUNTHER, Ann. Mag. Nat. Hist. 1860, 401, pi. 10, f. B, Ceylon (Coll. Dr. Sib- 

 bald) ; GUNTHER, Cat. Fish., n, 381, I860; LUTKEN, Vid. Medd. Kjobenh. 1875, 42. 



836. REMORA, Gill. 

 (REMORAS.) 



Remora, GILL, Proc. Ac. Nat. Sci. Phila. 1862. 239 (remora). 



Echeneis, GILL, Proc. Ac. Nat. Sci. Phila. 1864, 60 (remora) ; not Echeneis, GILL, 1862, 



restricted to naucrates. 



Remoropsis, GILL, Proc. Ac. Nat. Sci. Phila. 1864, 60 (brachypterus). 

 Re.morina, JORDAN & EVERMANN, Check-List Fishes, 490, 1896 (albesens). 



Body rather robust, the vertebrae 12 -f- 15 = 27 ; disk shortish, of 13 to 18 

 laminae; pectoral rounded, its rays soft and flexible; soft dorsal and anal 

 moderate, of 20 to 30 rays; caudal subtruncate. Species attaching them- 

 selves to large fishes, especially to sharks. (Remora, an ancient name, 

 "holding back.") 



REMORA : 



a Laminae about 18; soft dorsal with 23 rays. REMORA, 2606. 



aa. Laminae 13 to 16. 

 REMORINA : 



b. Dorsal rays XIII, 22. ALBESCENS, 2607. 



REMOROPSIS (Remora , o^is, appearance) : 

 bb. Dorsal rays XIV, XVI, 29 to 32. BRACHYPTERA, 2608. 



Submenus REMORA. 

 2606. REMORA REMORA (Linnaeus). 



(REMORA.) 



Head 4 ; disk 2f ; width between pectorals 5. D. XVIII-23 ; A. 25 ; ver- 

 tebrae 12 -j- 15. Body comparatively robust, compressed behind. Pectoral 

 fins rounded, short, and broad, their rays short and flexible; ventral fins 



