338 
bulletin oe the bureau of fisheries. 
Specimens of Tracheloteuthis riisei Examined. 
No. of 
speci- 
mens. 
Locality. 
Depth. 
Collector. 
Author’s 
register. 
7 
281 
Remarks . — These specimens, all of which are of approximately the same size and developmental 
stage as the one selected for figuring, are of interest here chiefly because they serve to extend the known 
range of this curious pelagic species over a much greater area of ocean it was previously reported 
to inhabit. There is small doubt that it will eventually prove to have an almost universal dispersion 
in the warmer currents of the ocean. 
Family OMMASTREPHID^ Gill 1871. 
Ommasirephini St^Q.nstru^ i86r, {fi'ide Hoyle). 
OmviastrephidcB Gill 1871, p. i. 
Ommasirephid(2 Verrill 1881, p. 428. 
Ommasirephini'RoYXQ 1886, p. 32, 162. 
OmmatosrephidcB Pfeffer 1900, p. 153, 176, 
OmniaiostTephidce Pfeffer 1908, p. 62, 87. 
OmmatostTephid<2 Pfeffer 1912, p. 369. 
Animal usually of moderate size, but often of considerable dimensions; loliginiform. Fins large, 
sagittate, subterminal. Suckers in two rows on the arms, usually four rows on the clubs of the tentacles; 
none of the suckers modified into hooks. Fixing apparatus a single series of modified suckers and pads 
at the base of the club. Funicular cartilages highly developed, complex; their major outlines l-shaped. 
Gladius consisting of little but the rhachis throughout the greater portion of its length; terminating 
posteriorly in a deep hollow cone. The occurrence of photogenic organs has not been described in any 
of the genera except Hyaloteuthis. 
Genus OMMASTREPHES d’Orbigny 1835 . 
Ommastrephes d’Orbigny 1835, p. 43. 
Ommastrephes d’Orbigny 1845, p. 412. 
Ommaiostrephes Loven 1846 (.fide Hoyle). 
Ommastrephes (pars) Verrill i88oa-i88t, p. 267, 385. 
Todarodes Steenstrup 1880, p. 83 (23). 
Ommaiostrephes Pfefier 1900, p. 178. 179. 
Ommastrephes Hoyle igoa, p. 198. 
Ommaiostrephes Pfefier 1908, p. 89. 92. 
Ommaiostrephes Pfefier 1912, p. 388. 438. 
Funnel groove with a foveola. Homy rings of large tentacular suckers with the teeth either nearly 
subequal, or with one or more of the apical denticles somewhat enlarged. Fixing apparatus very poorly 
developed. Sucker bearing portion of tentacle extending for more than half the total length. 
Type. — Loligo sagittata Lamarck 1799 (species first mentioned); a common Atlantic species. 
Ommastrephes hawaiiensis Berry 1912. (PI. liv, fig. 2.) 
fOmmastrephes sloanei Schauinsland 2899, p. 92 (listed from Laysan Island). 
Ommastrephes sagittata near sloanei Berry 1909, p. 418 (mere locality records). 
iOmmatostrephes Sloanei Sloanei (pars) Pfeffer igi2, p. 458. 
Ommastrephes hawaiiensis 'B&try igi2b, p 434 . 437- 
Animal loliginiform, moderate in size. Mantle cylindro-conical, widest somewhat in advance of 
the middle, thence tapering very rapidly to an acute point between the fins; margin smootli and entire 
above, slightly emarginate below the funnel. Fins only moderately large, triangular when taken 
