426 Memoir Sears Foundation for Marine Research 



Neosteus ternetx.i Norman, Ann. Mag. Nat. Hist., {<)) 12, 1923: 593 (orig. descr.; type local. Rio de Janeiro, 



Brazil). 

 Pristigaster vanderbilti Borodin, Bull. Vanderbilt oceanogr. Mus., J (i), 1928: 6, pi. i, fig. i (orig. descr.; 



type local. Limon Bay, Colon, Panama; type VOM 12; apparently based on an "abnormal" specimen of 



Ilisha harrozveri without pelvics). 

 Ilishe {Neosteus) ternetzi von Ihering, Rev. Industr. Anim., i (3), 1930: 230 (fin rays, notes, Rio de Janeiro, 



Brazil). 



Ilisha narragametae Fowler 1 9 1 1 



Figure 107 



Study Material. None. 



Distinctive Characters. This species, according to the original description, seems 

 to be related to harroweri, having a similar deep body and rather large scales. It seems 

 to differ, however, in having a greater number of ventral scutes, more numerous anal 

 and pectoral rays, and a longer pectoral fin. 



Description. Proportional dimensions in per cent of standard length, and counts, 

 condensed from Fowler (j5; 208), specimen about 145 mm TL (caudal damaged), 

 reported as taken off Newport, Rhode Island. 



Body: depth 33. Scales: ca. 44. 



Head: length 25.5. Ventral scutes: 32. 



Fin rays: dorsal 17; anal 45; pectoral 16. 



Body much compressed, its greatest depth at insertion of pelvic fin, ■t,.t,'t, in SL; 

 the dorsal outline slightly convex, the ventral outline more strongly convex anteriorly. 

 Caudal peduncle compressed, its length a trifle less than its depth, 3.4 in head. 



Scales large, cycloid, each with as many as 6 vertical striae. Ventral scutes 

 developed, 25 in advance of pelvics and 7 behind. 



Head compressed, slightly concave above, convex below, greatly inclined, 3.5 in 

 SL. Snout shorter than eye, a median notch scarcely developed, 4.3 in head. Eye 3.0. 

 Interorbital 6.25. Maxillary reaching somewhat beyond a vertical from anterior 

 margin of pupil, 1.9 in head. Mandible strongly projecting, its margin within mouth 

 well elevated. Gill rakers half of length of eye, 22 on lower limb of first arch. 

 Teeth small ; a series on anterior part of mandible and premaxillaries, a double series 

 on each palatine; also present on tongue. 



Dorsal fin graduated downward from the first branched ray, its origin equi- 

 distant between tip of mandible and base of caudal. Caudal forked (damaged); small 

 scales on base of fin. Anal fin low, its margin straight, its anterior rays little elevated, 

 its origin slightly behind base of dorsal, about equidistant between anterior margin of 

 eye and base of caudal. Pelvic fin very small, inserted rather less than an eye's di- 

 ameter in advance of vertical from origin of dorsal and much nearer to origin of anal 

 than to base of pectoral. Pectoral fin falcate, rather broad, reaching far beyond tip 

 of pelvic fin, 1.3 in head. 



