1282 Bulletin 47, United States National Musemn. 



are very close. The skulls in the two are almost identical, as has already 

 been noticed by Poey and Gill, (f rfAz?, etelis, a name used by Aristotle 

 for some fish not now recognized.) 



a. Maxillary scaly ; depth 3^ iu length. ocdlatus, 1654. 



aa. Maxillary naked ; depth 2g in length. aquilionaris, 1655. 



1654. ETELIS OCULATCS (Cuvier & Valenciennes). 



(Cachucho.) 



Head 3i; depth 3A. D. X, 11 ; A. Ill, 8 ; scales 5-53-12, 50 pores. Body 

 elongate, somewhat fusiform, moderately compressed; the back moderately 

 elevated; caudal peduncle long and very slender; profile convex on snout, 

 thence straighti.sh to occiput; the nape low, not keeled; snout short, 

 rather pointed, 3g in head; eye very large, 3 in head; preorbital very 

 narrow, its least width 14 iu head. Mouth moderate, oblique, the lower 

 jaw projecting; maxillary reaching middle of eye, 2^ iu head, its surface 

 scaly; interorbital space slightly concave, 4 in head, the supraorbital 

 ridges prominent. Upper jaw with a narrow band of villiform teeth, 

 outside of which is a row of moderate teeth, the two canines (sometimes 

 duplicated) in front very sharp and projecting forward and downward, 

 their length about 3 iu diameter of pupil; lower jaw with villiform teeth 

 in front of jaw only, the larger teeth of the outer row smaller and more 

 numerous than in the upper jaw; canines of lower jaw not differentiated; 

 tongue without teeth; vomer with a narrow A-shaped patch of teeth, 

 bluntish in front and without backward jirolongation on median line; no 

 teeth on hyoid or pterygoid bones. Gill rakers long and slender, their 

 length about f diameter of eye, about 12 + 15. Posterior margin of pre- 

 opercle almost straight and vertical, scarcely emargiuate, very finely ser- 

 rate; the teeth a little coarser at the angle. Scales rather large, the rows 

 all running parallel with the lateral line; maxillary with about 12 scales; 

 region behind eye well scaled ; 7 rows of scales on cheek ; 4 rows on inter- 

 opercle, 2 on subopercle, and 8 on opercle; temporal region with about 4 

 rows of large scales; top of head and snout naked; lower jaw with a few 

 embedded scales ; bases of soft dorsal and anal scaleless. Spinous and soft 

 dorsals connected; dorsal spiues rather high and strong, the first spine 

 short, J length of second or longest spine, which is 2 in head, the spiues 

 thence becoming almost regularly and gradually shorter to last spine, 

 which is little longer than first spine; margin of soft dorsal straight, the 

 rays 3 in head, the last ray slightly elongate, its length 21 iu head ; anal 

 similar to soft dorsal, its last ray considerably produced, its first soft rays 

 when depressed reaching little beyond base of last ray; anal spines 

 slender and regularly graduated, the third 3| in head; caudal very deeply 

 forked, the upper lobe the longer, its length 4 times length of middle 

 rays, which are 3^ in head ; upper lobe almost filamentous, longer than 

 head; ventrals If in head; pectorals falciform, reaching almost to anal, 

 li in head. Color in life, brilliant rose-red; bases of the scales deeper; 

 sides and belly abruptly paler, rosy; mouth reddish within; lining of 

 gill cavity reddish; tins all rosy; sjjinous dorsal and caudal bright red, 



