328 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



Sb. Middle third of upper lip smooth, outer third of each side crenulate; 



orbital tentacle single, inner edge with from 2 to 4 cirri, no cirrus on 



outer edge; nuchal pair of cirri present; no definite dark blotch 



behind eye. 



4a. A black spot just above and behind pectoral fin base. (Christmas 



Island; Indian Ocean; Philippines; Tau and Swains Islands.) 



E. caudofasciatus (Regan) 

 46. No black spot above and behind pectoral fin base. (Marshall, Mari- 

 anas, Samoan Islands.) E. incisolabiatus, new species 



3c. Entire edge of upper lip crenulate. 



5a. (See 56, 5c) Nuchal tentacle, single, rather broad based, and sometimes 

 with 1 or 2 short cirri on its edges; orbital tentacles rather large, 

 nearly as long as eye diameter, both edges multicirrate; nasal flap 

 palmate with pedunculate base, then a broad thin flap with nu- 

 merous cirri distally; background color light gray to tan, head and 

 body profusely blotched with dark brown, more or less arranged 

 to form 6 double but highly irregular vertical bars; dorsal, anal, 

 caudal, and pectoral fins barred with dark brown, pectoral base 

 with brown bar; then whitish bar posteriorly on base; dusky bar 

 below eye; dorsal raj's XIII, 17; anal 11,17 to 19. 



E. decussatus (Bleeker) 

 56. Nuchal tentacle, simple, single, without cirri on its edges; coloration 

 not as above. 

 6a. Orbital tentacles with at least 2 or 3 cirri that arise basally and not 

 from distal edges of a single main dermal cirrus; background 

 coloration light tan or whitish with traces of some tiny patches 

 of dark pigment cells dorsally; side of head with 3 lightly pig- 

 mented dark streaks, first close behind eye, with an intensifica- 

 tion of pigment forming a spot just behind eye, then a white 

 streak followed by a dark streak, then a white streak followed 

 by a thin line of dark pigment cells across opercle; dorsal rays 

 XIII, 13 or 14; anal 11,15; (a small species, with adults 23 to 27 



mm. in standard length) E. cymatobiotus, new species 



66. Orbital tentacle with a single base, on its inner edge from 1 to 7 cirri, 

 outer edge with or without cirri. 

 7a. Dorsal rays XIII,17, rarely XIII,16; anal 11,18, rarely 11,19; orbital 

 tentacle with from 1 to 7 cirri on both inner and outer edges, 

 number of cirri increasing with size of specimen; background 

 coloration light tan, with vertical bars represented by dark 

 brown markings; along midside of specimens as long as 65 mm. 

 a series of pale-centered dark brown spots, anterior and pos- 

 terior ones sometimes not pale centered, or they are open 

 ventrally; on lower sides, upper part of back, and extending on 

 dorsal fin a series of double dark brown spots; adults 120 mm., 

 have vertical bars indistinct and the head, body and fins are 

 profusely covered with small dark brown spots and middle of 



sides with lengthwise brown streaks E. aneitensis (Gunther) 



76. Dorsal rays XIII, 15 or 16; anal rays 11,15 to 17; underside of head 

 with 3 or 4 V-shaped white and dark color marks; no dark shoul- 

 der spot. 



