170 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57. 



a little lighter tint and more reddish. External surface of all parts 

 appears light reddish brown in color. 



Ink-gland absent. Gills massive, each with eight lobular leaflets. 

 Oviduct and water vascular canal both single, namely those of the 

 left side. Vagina stout, projecting freely into mantle-cavity. Mature 

 ovarian eggs 10 mm. long. 



Total length 40-200 mm. 



Type-locality. — Off Kinka-san, Rikuzen Province. 



Type—Cat. No. 332949, U.S.N.M. 



Genus OPISTHOTEUTfflS Verrill. 



3. OPISTHOTEUTHIS DEPRESSA Ijinia and Ikeda. 



Opisthoteuthis depressa Ijima and Ikeda, Journ. Coll. Sci. Imp. Uiiiv. Tokyo, 

 vol. 8, 1895, pp. 1-15, pi. 33. —Meyer, Zool. Anz., vol. 29, 1906, pp. 758-760; 

 Zeitsch. wiss. Zool., vol. 75, 1906, pp. 183-269, pis. 11-16.— Marchand, Zeitsch. 

 wiss. Zool., vol. 86, 1907, p. 381.— Dollo, Zool. Jahrb. Suppl., vol. 15, 1912, 

 pp. 131, etc., pi. 3, fig. 5. 



Station 4912 (off Satsuma Prov.). Two females. Cat. No. 



332941, U.S.N.M. 



Station 4969 (off Kii Prov.). One female. Cat. No. 332943, 

 U.S.N.M. 



Station 4919 (off Kusakaki-jima). One female. Cat. No. 



332942, U.S.N.M. 



Station 5092 (Sagami Sea). One female. Cat. No. 332940, 

 U.S.N.M. 



The specimens listed above are, without hesitation, referred to 

 the present species; they are not, however, so much flattened as 

 described by Ijima and Ikeda but show a concavo-convex curvature 

 or even a shallowly urceolate structure, approaching StauroteutJds in 

 shape, and the dorsal cartilage is not straight, but bent into a crescent. 



Division TRACHYGLOSSA Llitken. 

 Family ELEDONELLIDAE, new name. 



Bolilaenidae Chun, Cirrothauma, 1911, p. 20. — Naep, Teutholog. Notiz., vol. 8, 

 1912, p. 196.— Berry, Hawaiian Cephalopoda, 1914, p. 289. 



Genus CHUNELLA, new name. 



Bolitaena Chun, Cirrothauma, 1911, p. 17. 



Japellella (part) Hoyle, Ann. Mag. Nat. Hist., ser. 5, vol. 15, 1885, p. 232. 



Elcdonella Hoyle, Challenger Cephalopoda, 1886, p. 106. 



Chun (1911) mentions a specimen caught by the Valdivia under 

 the name of Bolitaena diapJiana, identifying it with Eledonella dia- 

 pTiam/i (Ho3de), without giving any explanation for the reason why 

 he refers it to the genus Bolitaena. Judging from Steenstrup's 

 description reproduced in Hoyle (1886, p. 16), that genus seems 

 closely related to Alloposus, a quite different genus from VerriU's 

 Eledonella (not Hoyle's). 



Type. — Chundla diapliana (Hoyle), 1885. 



