CEPHALOPODS OF WESTERN NORTH AMERICA. 



299 



Ommastrephes cylindricus d*Orbigny, 1835, p. 54, pi. 3, fig. 3-4. 

 Bartramn d'Orbigny, 1835, p. 55. 



cyliiulncus d'Orbigny, in d'Orbigny and Ferussac, 1835, p. 54. pi. 111, fig. 3-4 (fide Hoyle). 

 Loliiio vilreus Rang, 1837. p. 71, pi. 36 (fide d'Orbigny). 

 Ommastrephes Bartramn d'Orbigny, 1838, p. 59, no. 15 (fide d'Orbigny). 



cyltrulrkus d'Orbigny, in d'Orbigny and Ferussac, 1839, p. 347; Calmars, pi. 11; Ommastr., pi. n, fig. 11-30 

 (fide Hoyle). 

 d'Orbigny, 1845, p. 420, pi. 29. fig. 1-2; pi. 30, fig. 7-8. 

 Gray, 1849. p. 62. 

 d'Orbigny. 1853. p. 59. 



H. and A. Adams, 1854, i. p. 34 (name only); pi. 4, fig. i-ia. 

 Tryon, 1873. p. 12, pi. II, fig. 8. 

 Verrill and Smith. 1S74, p. 341 (635). 

 Ommastrephes Bartramn Tryon, 1879. p. 180, pi. 80. fig. 361-363. 

 Slhenoteuthis Bartramn Verrill, 1880, p. 223. 



Ommatoslrephes Barlramii Steenstrup, 1880, p. 79, 81, etc., fig. 

 Slhenoteuthis Bartramn Verrill, 1881, p. 288. 429. 



Verrill, 1882a, p. 322 (112), 432 (222). 

 Verrill, 1883. p. 106 (dimensions). 

 Ommastrephes bartramn Hoyle, 18S6, p. 32 (no description). 



Bartramit Hovie, i886a, p. 242 (38), (no description). 

 Stenot£uthis Bartrammi Girard, 1890, p. 265 (mere note). 

 Ommastrephes Bartrammi Jimbin, 1894, p. 4 (merely listed). 



bartratrni Jatta, 1896, p. 64, pi. x. fig. 1-16. 

 Ommatostrephes bartramii Lonnberg, 1897, p, 705. 

 Gonatus amocnus Lucas, 1899, pi. xil. (fig. inaccurate in detail). 

 StenoUuthis barlrami Pfe£fer, 1900, p. 180. 

 Sthenoteulhis bartrami Hoylc, 1902, p. 204. 

 Ommastrephes Bartrami }ouh\n, 1903, p. 4 (short note). 

 Stenoteuthis Barlravn Rcy, 1905, p. 172, fig. 



bartramn Pleffer, 1908, p. 97, fig. 109-115. 

 Slhenoteuthis bartrami Hoyle, 1909. p. 273 (no description). 



Animal of rather large size, loliginiform. Mantle cylindrical, thick and heav-j-, tapering to an 

 acute point between the fins; anterior mantle margin truncate, entire all round. Nuchal articulating 

 apparatus a rather broad, elongate, cartilaginous ..... 



plate with two ver>' prominent longitudinal 

 ridges and three smaller ones (pi. XLVii, fig. 2), 

 the plate on the mantle having grooves to cor- 

 respond; funnel locking apparatus more com- 

 plex, comprising a massive triangular cartilage 

 with a deep X"Shaped excavation which fits 

 closely over a heavy ridge of similar shape on 

 the inner surface of the mantle (pi. XLVii, 

 fig. 3). Fins large, broadly sagittate, very firmly 

 attached. 



Head large, somewhat elongate. Eyes large, with enormous apertures. Funnel large and wide, 

 with stout dorsal supporting bridles and a large prominent valve; funnel groove broadly excavated 

 and provided at the apex with the ciu-ious scries of pocket-like folds termed the foveola (text fig. 7). 



Arms stout, thick, unequal, the dorsal pair the shortest; all are furnished with a swimming mem- 

 brane strengthened by strong transverse muscular trabeculae, and are outwardly keeled, a circum- 

 stance attaining its maximum development on the third pair of arms; here the ventral swimming web 

 becomes an extremely broadened delicate membrane, far overreaching the transverse supports along 

 the whole length of the arm (pi. XLvn, fig. i). Umbrella ver>' rudimentarj-. Suckers (pi. L, fig. 4) 

 large, flattened, obliquely placed on stout jjcdicels in two alternating rows, larger homy rings with 

 about 28 to 30 stout acute teeth differentiated in two sizes which occur in partial alternation. 



Fig. 7. — Slhenoteuthis bartramii. \o\cq\a. [114.] 



