MONOGKAPH OF JAPANESE OPHIÜEOIDEA. 77 



lateral branch even at the basal region, covered on the upper side 

 by a finely and closely granulated skin, with several scattered, 

 smooth, hemispherical tubercles on the more proximal shafts, dis- 

 tinctly annulated with hook-bearing segments throughout. Ventral 

 surface of the arm entirely smooth to the naked eye. The arm 

 spines which are present beyond the first bifurcation, are very 

 fine, and three or four in number for each tentacle pore. 



Colour in alcohol : disk mottled, arms annulated with yellow- 

 ish and grayish brown. 



This species can be easily distinguished from the other 

 species of Astrocladus by the entirely smooth disk covering and 

 by the arms being distinctly annulated with hook-bearing segments 

 even at the very basal region. 



Astrocladus coniferus (Döderlein). 



Astrocladus coniferus var. pardcdis (Döderlein). 

 Astrocladus coniferus var. dofleini (Döderlein). 



Astroplujton x^ardalis : Döderlein, Zool. Anz., XXV, 1902, p. 323 ; 

 Clark, Bull. U. S. Nat. Mus., LXXV, 1911, p. 293. 



Astropliyton coniferum : Döderlein, loc. cit., p. 325. 



Astrocladus dofleini: Döderlein, Schultze — Zool. Ergebn., IV, 1910, 

 p. 256^); DÖDERLEIN, Abh. Math.-Phys. Kl. K. Bayer. Akad. Wiss, Suppl.- 

 Bd. I, 1911, p. 41, fig. 9, PI. n, fig. 6, PL m, figs. 1-4, PL IV, figs. 15- 

 15&; BoMFORD, Kec. Ind. Mus., IX, Pt. 4, 1913, p. 200, PL XIH, fig. 1. 



Astropliyton cornutum : Clark, Bull. U._ S. Nat. Mus., LXXV, 1911, 

 p. 292. (Non Kœhler, 1909.) 



Astrocladus coniferus: Döderlein, loc. cit., 1911, p. 46 & 76, PL IE, 

 figs. 7 & la, PL IV, figs. 1-3«, PL VI, figs. 5-6a & 16. 



Numerous specimens ; Misaki. Several specimens ; off Moroiso, 

 Misaki ; 10 fathoms. 



1) This paper wn?, not seen by me. 



