336 
BULLETIN OF THE BUREAU OF FISHERIES. 
Family BRACHIOTEUTHID^ PfefiFer iqo8 . 
Tracheloteulhidm Pfeffer 1900, p. 152, 174. 
Brachioteuthid<B Pfeffer 1908, p. 62, 78. 
Tracheloteuthidce Qh.\x.n 1910, p. 205. 
BrachioteuthidcB Pfeffer 1912, p. 345. 
Body slender, loliginiform. Fins large, rhombic. None of the suckers on either arms or tentacles 
transformed to hooks; arms with two rows of suckers; tentacles with four or more rows. No fixing 
apparatus. Funnel locking cartilages simple and linear. Gladius slender, con- 
sisting for the most part of little but the rhachis; terminating in a long pointed 
cone. 
Genus BRACHIOTEUTHIS Verrill 1881 . 
Brackioteutkis Verrill i88i, p. 405. 
Brachioteutkis Pfeffer 1900, p. 174, 176. 
Brackioteutkis Chun 1910, p. 206. 
Brachioteutkis Pfeffer 1912, p. 346. 
Characters af genus identical with those of the family, for the latter becomes 
monogeneric upon the union of Tracheloteuthis with Brachioteutkis , as is now very 
generally advocated. 
i Type. — Brachioteutkis Beanii Verrill i88i (designation); a species of the New 
England region. 
Subgenus Tracheloteuthis Steenstrup 1882. 
Tracheloteuthis Steenstrup 1882, p. 294. 
Verrilliola Pfeffer 1884, p. 22. 
Entomopsis de Rochebrune 1884, p. 15, 
Tracheloteuthis Hoyle 18S6, p. 163. 
Tracheloteuthis Pfeffer 1900, p. 174, 175. 
Tracheloteuthis Pfeffer 1908, p. 78. 
Brachioteutkis (pars) Chun 1910, p. 206. 
Brachioteutkis {Tracheloteuthis) Pfeffer 1912, p. 355. 
Mantle very thin, membranous. Entire animal nearly colorless except for 
a few chromatophores on the head and a very few scattered ones on the body. 
Fins large, rhombic, but never as long as half the mantle length. 
Type. — Tracheloteuthis Riisei Steenstrup 1882 (species first mentioned); a 
species of almost cosmopolitan distribution. 
Brachioteutkis (Tracheloteuthis) riisei (Steenstrup 1882). 
Tracheloteuthis Riisei SteenstrupiSSz p. 294. 
Tracheloteuthis Behnii Steenstrup 1882, p. 294. 
Tracheloteuthis riisei Hoyle 18S6, p. 36, 164, 213, 221, pi. 28, fig. 6-12. 
Tracheloteuthis Behnii Weiss 1888, p. 85, pi. 10, fig. 1-4. 
Tracheloteuthis riisei Lonnberg 1897, p. 603 (account of funnel organ). 
Fig. 37 . — Brachioteuihis 
(Trachelateuthis) riisei, 
dorsal view of specimen 
[280], from station3878, 
X 2. Drawn by R. 
L. Hudson. 
Tracheloteuthis riisei Pfeffer 1900, p. 173. 
Tracheloteuthis Riisei Hoyle 1905a, p. 93, pi. 14, fig. 1-5. 
Tracheloteuthis riisei Pfeffer 1908, p. 79, fig. 93-95. 
Tracheloteuthis Riisei Massy 1909, p. 30. 
Tracheloteuthis riisei Berry 1909. P- 4 i 9 (mere locality record). 
Brachioteuihis Riisei Chun 1910, p. 207. 
Brachioteuihis (.Tracheloteuthis) Riisei Pfeffer 1912, p. 355, pi. 26, fig. 1-20; pi. 27. fig. 1-9. 
Animal small, pelagic, hyaline, extremely slender and graceful. Mantle very thin, inflated, 
elongate-cylindrical; swollen at the middle and tapering to an acute slightly attenuate point posteriorly; 
pallial chamber capacious, very scantily occupied by the delicate viscera. Mantle opening very wide, 
due largely to the extreme length and narrowness of the neck; anterior margin sharply angled in the 
medio-dorsal line, the ventro-lateral projections also well marked but somewhat less pronoimced. 
