ig SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



This genus was not known from Peru when U. S. National Museum 

 Bulletin 189, 1946, was prepared. However, Mr. Barton obtained a 

 specimen of this genus at Talara, Peru, in 1946, which he described 

 (1947, p. i) as Eques ■• lanfeari. 



EQUETUS LANFEARI (Barton) 



Figure 5 



Eqncs laiifcari Barton, 1947, p. I, fig. i, Talara, Peru, from a depth of 250 

 feet. (Description, based on the holotype (A.M.N.H. No. 17081), 290 

 mm. in total length.) 



Head 3.2 ; depth 2.7 ; D. XII, 35 or 36 ; A. II, 7 ; scales in 80 trans- 

 verse series above lateral line, 12 rows between lateral line and middle 

 of first dorsal. 



Body deep, much compressed; head compressed; snout blunt, not 

 protruding beyond premaxillaries, 3.0 in head; eye 4.7; interorbital 

 3.7 ; mouth nearly horizontal ; maxillary reaching about under middle 

 of eye, 2.6 in head; tip of lower jaw with a fleshy knob; posterior 

 nostril oval, the anterior one somewhat triangular and smaller ; teeth 

 in wide bands in both jaws, the outer ones in upper jaw enlarged; 

 gill rakers very short, 9 exclusive of rudiments on lower limb of first 

 arch; lateral line not distinct, rather strongly arched; scales strongly 

 ctenoid, extending on soft dorsal, caudal, and anal ; dorsal fins barely 

 continuous, spinous dorsal short, the first spine very short, the second 

 and third high, the third 1.8 in head; second dorsal very long and 

 rather low ; caudal fin rounded ; anal small, the second spine enlarged, 

 2.2 in head; ventral nearly as large as the pectoral, inserted almost 

 under base of pectoral, 1.6 in head; pectoral 1.7 in head. 



Color gray, purplish along back, a little lighter on belly; all fins 

 dusky at edges ; snout, opercles and preopercles darker ; four distinct, 

 horizontal, dark stripes, the first about one-third of the pupil in width, 

 starting below middle of first dorsal and running along base of fin 

 to middle of soft dorsal; the second, about one-half of the pupil in 

 width, starting about the length of snout below the first dorsal spine 

 and curving backward to base of third hindermost ray of soft dorsal ; 

 the third slightly wider, from back of opercular angle to upper third 

 of peduncular base; the fourth a little narrower, starting a little be- 

 hind lower pectoral base and running back to above posterior anal 

 base. (Reorganized and somewhat reworded after Barton.) 



^ Eques Linnaeus (1758, p. 459) is preoccupied in Lepidoptera, but Equetus 

 Rafinesque (181 5, p. 86) is available. 



