368 
Scales 48 in axial or lateral series to caudal base and 
4 more on latter; 7 above, 3 below, 35 predorsal. Scales with 4 
basal radiating striae, edge scalloped; circuli very fine, complete. 
t 
D, ^ 10, first branched my about 3? in total head length 
A, 10, first branched ray 2 9/l0; least depth of caudal peduncle 
3 7/8; pectoral rays I, 14, reaches little beyond tips of last dorsal 
and anal rays though not quite to caudal base; ventraj 1 l/lO in head, 
reaches 2/3 in anal base. 
Back brown, sides and below silvery white. Iris silvery 
white* Dorsal and caudal brownish. Ventml and anal whitish. Pectoral 
largely blackish, especially medially and terminally, edges pale. 
East Indies, Philippines, Queenslnad, Polynesia, Hawaii, 
This species falls with Exonautes though differs from both Cypselurus 
rubescens and Cypselvirus exiliens in having the upper pectoral ray alone 
simple and the pectoral without a transverse white band. My example 
also agrees largely with Sleeker*s figure. It does not show the 
pectoral with pale or whitish all aroimd, and though the median 
longitudinal part of the fin blackish on the membranes, when the fin 
is opened. TlVhen retmcted it has an entirely different appearance 
due to the silvery gray edges of the rays so that the dark color of 
the fin is largely obscured, excepth terminally. 
One example. Route to Satan, July 21, 1909, Length 201 mm. 
