74 U.S. NATIONAL MUSEUM BULLETIN 234 



The gladius was not examined. 



The color, in alcohol, is a muddy, yellowish brown with nimierous 

 small pm-plish-red chromatophores on mantle, head, and arms. 



Measurements and indices of 10 specimens of Loligo duvauceli 

 d'Orbigny are: 



Type. — Museum National d'Histoire Naturelle, Paris. 



Type locality. — Not given. 



Discussion. — Adam (1954) discussed the affinities of this species 

 with the others of the Indo-Pacific region; he gave a complete syn- 

 onymy and discussed the reasons for placing the various species 

 together. Only one discrepancy in his discussion merits notice. 

 He stated that Massy's Loligo indica is the same as the present 

 species; however, Massy (1916, p. 220) stated "there is no trace of a 

 hectocotylus," although she had several males before her for examina- 

 tion. L. duvaucelii has a well-developed hectocotylus and it seems 

 hardly conceivable that Massy would have missed it in her analysis. 

 A reexamination of her specimens would settle this matter. 



L. oshimai as described by Sasaki has two light organs buried in 

 the ink sac. These were present in my specimens but I can find no 

 reference to such organs in the literature on L. duvaucelii. Perhaps 

 it has not been investigated. 



Distribution. — Inhabits the Indian and Pacific Oceans, from 

 South Africa to Formosa. A common Indo-Malayan species. 



Loligo species A 



Figure II, f-j 



Material: 1 cf , ML 136.0 mm., from Port Langcan, Dumaran Id., 

 eastern Palawan, Apr. 7, 1909. 1 9, ML 114.0 mm., from Catbalogan, 

 Samar, Apr. 14-16, 1908. 6 d' c^, ML 79.0-53.0 mm., 2 99, ML 53.0, 

 72.0 mm., from Port Uson, west of Pinas Id., Dec. 17, 1908. ?1 cf , 

 ML 137.0 mm., from Manila Harbor, Nov. 2, 1908. 



Description. — The mantle is long and slender, especially in the 

 males. It is cylindrical with nearly parallel sides for half the mantle 



