Boone, Mollusca, Cruises of "Eagle" and "Ara," 1921-28 171 



laminae whitish and translucent. The tips of both upper and lower 



mandibles are decidedly incurved. 



The pen is long, slender, with a slender midrib and strong marginal 



ribs (see plate 106, fig. A). 



Keferences: Loligo illecebrosa Lesueur, Journ. Acad. Nat. Sci. 

 Phila., vol. II, pt. 1, p. 95, pi. 10, 1821. — Blainville, Diet, des 

 Sci. Nat., vol. 27, p. 142, 1823.— Gould, Kept. Invert. Mass., 1st 

 ed., p. 318, 1841. 



Loligo piscatorum La Pylaie, Ann. des. Sci. Nat., ser. I, vol. IV, p. 

 319, pi. 16, 1825. 



Ommastrephes sagittatus (part) D'Orbigny, Cephalopod. Acetab., p. 

 345, pi. 7, figs. 1-3, 1835-38.— Gray (part), Cat. Mollusks Brit. 

 Mus., pt. I, Cephalopod. An., p. 58, 1847. — Binney, in Gould, 

 Kept. Invert. Mass., 2nd ed., p. 510, 1870; pi. 26, figs. 341-344, 

 not pi. 25d, fig. 339.— Tryon, Man. Conch., I, p. 177, pi. 78, figs. 

 341, 342 (after Lesueur) ; pi. 79, fig. 343, 1879 (not pi. 78, figs. 

 341,345). 



Ommastrephes illecebrosa Verrill, Amer. Journ. Sci., vol. Ill, p. 281, 

 1872 ; Kept. Invert. Vineyard Sound, p. 441, p. 634, 1873 ; Amer. 

 Journ. Sci., vol. 19, p. 289, 1880; Trans. Conn. Acad. Arts and 

 Sci., vol. V, p. 268, pis. 28, 29, figs. 5, 5a, pi. 37, fig. 8, pi. 39, 

 1879. — Tryon, op. cit., p. 176, 1879. — Sumner, Osborn and Cole, 

 Bull. U. S. Bur. Fish., vol. XXXI, part 2, p. 727, 1911. 



Illex illecebrosus Whiteaves, Marine Invert. Eastern Canada, Geol. 

 Survey of Canada, p. 210, 1901. 



Illex illecebrosus illecebrosus Pfeffer, Cephalopoden der Plankton- 

 Exped, p. 405, 1912. 



Subfamily : Stenoteuthinae. 

 Genus : dosidicus Steenstrup. 



Dosidicus gigas (D'Orbigny). 

 Plate 107. 



Type : D 'Orbigny described this species from an extensive series of 

 specimens captured during his "Voyage dans L'Amerique Meridionale 

 1826-1833," and deposited in the Paris Museum. These were taken 

 between the latitudes 40 and 60 degrees south. He lists and discusses 

 material from various points between Peru and Valparaiso, Chile. 



Distribution: Pacific Ocean, off South America: taken at Arica, 

 Coquimbo, Valparaiso and Taltal, Chile; off the coasts of Peru and 

 north to San Clemente Island, California. The "Ara" specimen 

 appears to be the first record of the species from Galapagos. 



