622 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



8. Arius insculptus Jor. & Gilb. 



Three specimens. Head with very fiue and unmerons granulations ; 

 occipital process very wide, truncate posteriorly, sometimes with fluted 

 margin into which fit projections from the antedorsal shield ; the latter 

 is wide. Humeral process with very fine numerous granulations. Fon- 

 tanelle tapering to a point posteriorly. Barbels much longer than in 

 Icessleri, the maxillary barbel reaching beyond first third of pectoral 

 spine. Vomerine patch of teeth not divided on median line. 



9. Arius planiceps Steiiid. 



A male and a female of this species, each about 10 inches long, differ 

 somewhat from those examined by Dr. iSteindachner, and from each 

 other. In the male the head is very long, 3^ in body; in the female, 4 

 in body. The maxillary barbels in the male are short, not reaching 

 base of pectoral spine, and the granulation of the cephalic plates is 

 much less marked, the granules on occipital process scarcely larger or 

 more thickly set than on rest of head. In both specimens the occipital 

 process is broader at the base, and much more tapering posteriorly than 

 is represented in the figure given by Dr. Steindachner. None of the 

 specimens examined by us show any distinct trace of a median furrow 

 through the vomerine patch of teeth. 



10. Arius dasycephalus Gthr. 



11. -3E31urichthys panamensis Gill. 



12. -Slurichthys piunimaculatus Steind. 



12. Albula vulpes (L.) Goode. 



13. Elops saurus Linn. 



14. Opisthonema libertate (Gilnth.) J. & G. 



This species differs apparently from thrissa in the absence of dark 

 spots on the scales of the back, in the longer and more numerous gill- 

 rakers, and in the longer head. In libertate, the head varies from 3f 

 (in young) to 4^^ (in adults) ; in thrissa, from 4 to 44. Libertate is bluish 

 or greenish above, silvery on sides and below, a yellowish-olive streak 

 on level of orbit. A small indistinct black spot at ui^per angle of pre- 

 opercle, and a larger more distinct one on scapula. Dorsal olive-yellow, 

 with dusky margin; caudal dusky, the lobes tipped with jet black; 

 upper rays of pectorals dusky. Tip of snout and lining membrane of 

 opercle black. 



A specimen of 0. thrissa is also in the collection, reputed to have been 

 taken by Professor Bradley at Panama. We prefer not to admit it to 

 the list from the Pacific coa.st until its occurrence there is verified. 



15. Stolephorus panamensis (Steind.) J. & G. 



Two specimens, about 5 inches long, with anal rays respectively 33 

 and 37 in number. 



16. stolephorus miarchus Jor. & Gilb. 



Many small slender anchovies collected by Professor Bradley in the 



