170 Memoir Sears Foundation for Marine Research 



Body elongate, rather strongly compressed, its depth 4.5 in SL. Head 3.75, its 

 depth a little greater than its postorbital length. Snout shorter than eye, projecting 

 much more than half of its length beyond tip of mandible, 6.25 in head. Eye small, 4.8. 

 Postorbital length 5.4. Maxillary moderately pointed, reaching margin of opercle, 

 1. 1 5 in head. Mandible 1.3. Cheek narrow, much longer than snout and eye, its 

 posterior angle about 30°. Gill rakers at angle of first arch about 66 "/o of length 

 of eye, with strong serrae on inner edge, somewhat expanded at tips. 



Dorsal fin moderately elevated anteriorly, its margin nearly straight, its longest 

 rays reaching well beyond the last ray if deflexed, its origin about an eye's diameter 

 nearer to tip of snout than to base of caudal. Anal fin fairly long, its origin under middle 

 of dorsal base, its base notably longer than head, 3.1 in SL. Pelvic fin reaching a little 

 more than halfway to origin of anal, inserted a little nearer to base of pectoral than to 

 origin of anal, 3.1 in head. Pectoral fin reaching beyond base of pelvic by about half 

 of diameter of eye, 6.5 in SL, 1.7 in head. Axillary scale of pectoral extending to 

 beginning of distal third of fin, 2.55 in head. 



Color. In alcohol, somewhat straw-colored on back, changing rather abruptly to 

 silvery on the side at level of upper margin of eye; back with dusky punctulations, these 

 extending onto basal 66 "/o or so of dorsal fin, and onto outer rays of caudal fin. 



Range. Known only from Lake Maracaibo, off Pueblo Viejo, Venezuela. 



Reference : 



Anchoa argenteus Schultz, Proc. U. S. nat. Mus., gg, 1949: 45, fig. 5 (orig. descr.; type local. Lake Maracaibo, 

 off Pueblo Viejo, Venezuela; type USNM 121777). 



Anchoa duodecim (Cope) 1869 

 New Jersey Anchovy 



Study Material. Known only from the type, 97 mm long (77 mm SL), taken at 

 Beesley's Point, New Jersey, ANSP 1363. 



Distinctive Characters. This species has been considered identical with A. mitchilli. 

 However, it differs strikingly from other local forms in its deep body, high dorsal fin, 

 the positions of the dorsal and anal fins, and in several other respects. It is of interest 

 that the species has never reappeared in collections. 



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

 based on the type specimen, 77 mm SL. 



Body: depth 25. Anal fin: length of base 25. 



Head: length 27. Pectoral fin: length 18.2. 



Snout: length 4.7. 



Eye: diameter 5.8. Scales: partly lost, ca. 38. 



Postorbital: distance 16.3. Gill rakers: 14 or 15 + 20. 



Maxillary: length 22. Fin rays: dorsal 14; anal 30; pectoral 



Mandible: length 21. 12. 



