540 PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVI. 



midway between the base Of the caudal and the posterior inargin of 

 L e3^; they reach slig-htly past the tips of the pectorals. The 

 inner part of the second ray and the outer part ot the third protrude 

 beyond the tips of the other rays and form a sharp angle. The outer 

 rays of the ventrals are not graduated. The hrst or outer ray is 

 scarcely over a third as long as the longest part of the second. 



Color in spirits a clear light brown above, silvery below. The 

 membrane of the pectoral is dark brownish, without spots or mark- 

 ings The rays on the outer side are silvery, making the hn appear 

 silvery when closed. Ventrals brown like pectorals, with the inner 

 and outer ray very light. Anal colorless and dorsal colorless, except 

 for a small dark brown spot at tips of fifth and sixth rays. Caudal 



^""nlve described from a small specimen from Misaki, presented by 

 the Imperial University of Tokyo. It is 13 cm. in length. It is 

 probably rare in Japan, drifting northward in the warm current, or 

 Kuro Siiiwo. It was originally described from China. It has been 

 identified, probably incorrectly, with the European species, LxonaMes 



Tondeleti. 



{fipaxvz, short; KE^aki), head.) 



S. CYPSILURUS S^^vainson. 



Q/psti«7m SwAiNSON, Classification Fishes, etc., 11, 1839, p. 296 [nuttalli, based on 



young with barbels). 



Body elongate, broad above, somewhat compressed. Head short, 

 blunt, narrowed below. Mouth small. Jaws very short, about equal. 

 Chin without barbel in the adult, often with one or two long fragile 

 barl)cls in the young. Maxillaries not joined to the premaxil lanes. 

 Teeth very feeble or wanting. Eyes large. Gill-rakers moderate. 

 Scales large, deciduous. No finlets. Dorsal fin short, opposite anal, 

 which is shorter than dorsal, of nine or ten rays. Caudal widely forked, 

 the lower lobe the longer. Pectoral fins very long, reaching past the 

 beginning of the anal, and serving as organs of flight, their great size 

 enabling the fish to sustain themselves in the air for some time. Ven- 

 tral tins large, posteriorly inserted, also used as organs of flight. Air 

 })ladder very large. No pyloric ca?ca. Species numerous in all warm 

 seas, living mostly in the open water and swimming in great schools. 

 The species are largely cosmopolitan and are the largest of the flying 

 fishes. 



{kviI:€Xo5, swallow, ffvpci, tail.) 



a. Second pectoral ray divided. 

 b. Ventrals pale or slightly dusky. 

 r. Pectoral fins unspotted, reaching nearly to end of dorsal: D. 13. A. 9; 



scales, 52 agoo, 10. 



cc. Pectoral fins spotted with black; anal pale; scales, 42 pceciloptei-us, 11. 



66. Ventrals mostly jet black; anal black posteriorly; fins all dark: D. 12. A. 9. 



hinuido, 12. 



