5 5 6 Memoir Sears Foundation for Marine Research 



as great as height of axis at hatching; about ^s at maturity. Pelvic fins pointed at hatching 

 but rounded posteriorly on larger specimens, about Va as long as distance from tip of 

 snout to rear margin of eye, or about as long as first dorsal. Pectorals about 1.3 times 

 as long as distance from tip of snout to rear margin of eye at hatching, about equal to 

 that distance on half-grown specimens, about 80 '/o on large; their tips (when laid back) 

 reaching about ^/a of distance along outer margin of pelvics at hatching, about to origin 

 of pelvics at maturity; anterior margin rather strongly convex, apex subangular, distal 

 margin weakly convex, posterior corner broadly rounded; margin curving sharply 

 inward and rearward at axil. 



Secondary Sexual Characters of Male. Frontal tenaculum seemingly not formed on 

 males until about 1/3 grown, ^i" well developed at maturity; curved strongly downward; 

 tip swollen in usual chimaeroid form; armed below with strong thorns directed rear- 

 ward. Openings of prepelvic pouches nearly transverse or slightly oblique, with inner 

 ends a little anterior; tenacula with about four strong sharp hooks directed inward and 

 forward along inner anterior edge of blade. Claspers rod-like, tapering a little; tip 

 somewhat swollen ; their extremities falling a little short of extremities of pelvic fins on 

 largest specimen seen; tips armed with a few sharp thorns directed toward base; shaft 

 also studded with low rounded knobs in one specimen, apparently the most nearly 

 mature. m 



Color. Fresh-caught males, seen by us, uniformly chocolate brown below as well 

 as above; mucous canals showing as pale lines; dorsal, pelvic and pectoral fins widely 

 edged with darker brown, the caudal narrowly so; dorsal spine, shafts of claspers and 

 prepelvic tenaculum whitish. Fresh-caught female described "^ as of same chocolate hue 

 but somewhat paler below eyes, above insertions of pectorals, and along flanks; mouth 

 and area between bases of pectorals bluish gray; pelvics black; iris pale green; sclerotic 

 membrane blackish brown or black. Newborn female pale bluish gray above and below, 

 darkest over abdomen; rayed portions of pectorals and pelvics black, their fleshy bases 

 whitish; dorsals gray basally, edged with sooty; dorsal spine sooty. 



Size. The length at hatching is about 100 mm to upper origin of caudal fin;"^ 

 males mature at a length of about 540 mm to upper origin of caudal fin (about 730 mm 

 to rearmost rays of upper side of caudal, or about 810 mm to tip of caudal filament). 

 The largest female seen was about 637 mm to upper origin of caudal fin (about 990 mm 

 to tip of caudal filament). 



Egg Capsule. On an empty egg capsule about 165 mm long, probably of this 

 species,!" (-jjg embryo case is more strongly convex on one side than on the other, of the 



1 10. There is no trace of it on one 300 mm long to posterior ray of upper side of caudal fin. 



111. So judged because the basal gland is more swollen than on the other two males examined. 



112. Roule and Angel, Result. Camp. sci. Monaco, 86, 1933: 77. 



113. A specimen only 102 mm in total length, pictured by Goode and Bean (Smithson. Contr. Knowl., JJ, 1895: pi. 11, 

 fig. 29), appears to have been taken from the egg capsule and somewhat mutilated (Garman, Bull. Mus. comp. 

 Zool. Harv., 41, 1904: 266). It is now in fragmentary condition. 



1 14. The identity of this egg capsule seems well established because (a) it closely resembles an egg capsule that is 

 almost certainly that of the Japanese RJiinochimaera pacifica (Dean, J. Coll. Sci. Tokyo, ig [4], 1904: 18-19, 

 pi. 2, figs. 12— 12b; Chimaeroid Fishes, Publ. Carneg. Instn., 32, 1906: 38, fig. 23), and because (b) H. raleighana 



