418 PROCEEDINGS OF THE ACADEMY OF [July, 



This list is somewhat reduced by the elimination of doubtful 

 names, but even then contains many species which are not always 

 easy to distinguish from one another and sometimes offer problems 

 of great difficulty. The entire group is much in need of a pains- 

 taking and thorough revision at the hands of someone having access 

 to a wealth of carefully preserved material, and when this time 

 comes it is possible that several of the nominal species may be reduced 

 to the rank of synonyms. A good many specimens have been 

 available to the present writer, but the series have usually been too 

 incomplete or, in the case of numerous market specimens, too poorly 

 preserved to render accurate determination easy, much less afford 

 ground for any important generalizations. 



The majority of Japanese species belong to a rather well-defined 

 group of narrow-shelled forms referred to by Wiilker as the " andreana- 

 Gruppe" and here for the sake of convenience recognized as a sub- 

 genus or section, to denominate which the term Doratosepion de 

 Rochebrune has been rehabilitated. An excellent discussion of these 

 forms together with a detailed key to the same has been given by 

 Wiilker (1910, pp. 17-20). 



Sepia aculeata Van Hasselt MS., 1834. 



Sepia aculeata Van Hasselt MS., in d'Orbigny and Ferussac, 1834, p. 287, 



pis. 5, 25 (fide Wiilker). 

 Sepia aculeata d'Orbigny, 1845, p. 296. 

 Sepia aculeata Gray, 1849, p. 105. 

 Sepia aculeata Steenstrup, 1875, p. 473, pi. 2, fig. 4. 

 Sepia aculeata Tryon, 1879, p. 195, pi. 90, fig. 415; pi. 91, figs. 416, 417 



(after d'Orbigny). 



Acanthosepion Hasselti de Rochebrune, 1884, p. 101. 

 Sepia aculeata Joubin, 1898, p. 25. 

 Sepia aculeata Wiilker, 1910, p. 11. 



A large cT specimen of this species having a dorsal mantle length 

 of 21 cm. is entered as Cat. No. 2,045 in the Stanford University 

 Invertebrate Series [S. S. B. No. 343]. It was obtained by Messrs. 

 Jordan and Snyder at Tsuruga, Echizen. The locular index of the 

 gladius of this specimen is 13.3. 



Distribution. Near Misaki, Sagami (Wiilker); Tsuruga, Echizen 

 (!). Java (d'Orbigny); Indian Ocean (Gray). 



Sepia esculenta Hoyle, 1885. 



Sepia esculenta Hoyle, 18856, p. 188. 



Sepia esculenta Hoyle, 1885d, p. 291. 



Sepia esculenta Appellof, 1886, p. 28, pi. 3, figs. 1-6. 



Sepia esculenta Hoyle, 1886, pp. 129, etc., pi. 17, figs. 1-5; pi. 18, figs. 1-6. 



Sepia esculenta Ortmann, 1888, pp. 649, 665. 



Sepia esculenta Pilsbry, 1894, p. 144. 



Sepia esculenta Hedley, 1906, p. 463. 



A single 9 , entered as No. 2,046 of the Invertebrate Series, 



