1919.] NATURAL SCIENCES OF PHILADELPHIA. 135 



shown with the dorsal origin about last fourth between mouth- 

 corner and gill-opening. Cope appears the first to wrongly place it 

 in Gymnothorax. Obviously in my own account the hind nostril 

 is intended above the front eye edge in a short tube. 



10. Gymnothorax moringua (Cuvier). 12. Echidna catenaia (Bloch). 



\l. G. carcinognathus Fowler. 13. Fundulus antillarum Fowler. " 



(Proc. Acad. Nat. Sci. Phila., (L. c, 1916, p. 418, fig. 1.) 



1912, p. 22, fig. 5.) 



*14. Belone argalus Le Sueur. . 



Head 2f ; depth 21f ; D. ii, 13; A. iii, 17; scales 200 from shoulder 

 to caudal base and 10 more on latter; 154 scales from occiput to 

 dorsal origin; eye If in postocular; interorbital 2 ; first branched dorsal 

 ray 1|; caudal peduncle width 2* least depth 4^; ventral l\; post- 

 ocular 5 J ? in rest of head; pectoral 4^ ?; lower caudal lobe 5; first 

 branched anal ray 4^. Body subcylindrical, caudal peduncle greatly 

 depressed, with broad keel flaring out each side and continued back 

 over caudal basally for f . Head large, with very long slender jaws, 

 lower little longer. Eye large, next to upper profile. Maxillary 

 entirely concealed, to front eye edge. Jaws not completely closing 

 basally. Teeth very small. Interorbital broad, depressed, dis- 

 tinctly concave medially. Nasal cavity much smaller than pupil. 

 Rakers 2 + 5, ii, short weak points, about | of filaments, latter 2^ 

 in eye. L. 1. inferior, extends below keel along caudal peduncle 

 side, but only to caudal base. Head largely scaly. Dorsal origin 

 well behind anal origin, or slightly nearer ventral origin than caudal 

 base, front lobes little elevated. Anal like dorsal, much larger and 

 front lobe greatly longer. Hind caudal edge emarginate, lower lobe 

 slightly longer. Pectoral pointed, reaches 4 to ventral and latter 

 inserted about midway between hind eye edge and caudal base, 

 fin 2f to anal. Color in alcohol faded dull brownish above, sides 

 and below silvery-white. Line of demarcation from shoulder bounded 

 only by dull leaden line. Side of head, iris and beak silvery-white. 

 Fins all pale. Length 308 mm. 



The above example agrees largely with Le Sueur's description,^ 

 except he says "lateral line very low, interrupted by ventral fins, 

 and beginning to rise above the base of the anal, are then continued 

 along the middle of the tail upon the carina." AYhat is intended by 

 "pectoral fins small, longer than the half of the space which separates 



6 Cat. F. Brit. Mus., VIII, 1871, p. 100. Cuba. 



^.\n. Amer. Sud, Poiss., 1855, p. 82, PI. 42, fig. 3 (head). Rio Janeiro. 

 8 Journ. Acad. Nat. Sci. Phila., II, pt. 1, 1821, p. 125, PI. 10, fig. 1. Island of 

 Guadaloupe. 



