1879.] MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. 205 



53. Fusus PACHYRHAPHE. (Plate XX. figs. 37, 37a.) 



Shell shortly fusiform, biconical, dull light brown, pale at the an- 

 gulation of the whorls. VV horls 8, of which the two apical are smooth 

 and convex ; the rest slopingly excavated above, rather sharply 

 angled at the middle, and flattish beneath, longitudinally plicate and 

 spirally grooved and ridged ; plicae eight or nine on a whorl, atten- 

 uating in the concavity, and again becoming more developed upon a 

 thickening at the upper margin of the whorls consisting of two 

 prominent lirae ; the transverse ridges are all beautifully imbricately 

 squamous through the elevated undulating Hues of growth ; two or 

 three beneath the angle stouter than the rest and subaodulous upon 

 the plicae ; on the penultimate whorl there are about from eight to 

 nine, and on the last about twenty-two, generally alternately fine 

 and coarser ; the costae attenuate inferiorly and extend almost to the 

 extremity. Aperture elongate, more or less tinged within with fleshy 

 brown, with the canal being rather longer than the spire, armed 

 with about six short lirae, which do not attain to the crenulated 

 margin of the lip ; columella livid pinkish, straightish above, and 

 oblique below the middle ; canal short and recurved. 



Length 21 millims., diam 9. Length of aperture and canal 12. 

 A smaller specimen is 1 6 long, 6 broad, and the aperture has a 

 length of 8 millims. (Fig. 37a.) 



Hab. Stations 8 and 27. 



The largest specimen from the latter locality diiFers from the rest 

 in having one plication less on a whorl, and the aperture propor- 

 tionally longer. In all other respects it agrees ; and I feel convinced 

 that they all belong to one and the same species. It belongs to the 

 same section of Fusus as F. imbricatus. Smith, from New Caledonia. 



54. SiPHONALIA CASSIDARIIFORMIS, RceVC. 



Buccinum cassidariceformis, Reeve, Conch. Icon. iii. fig. 11; 

 Lischke, Jap. Meer.-Conch. i. p. 38, pi. 4. f. 1-10 (as Siphonalia). 



Hab. Stations 5 and 17. 



The operculum of Siphonalia is described by A. Adams as fusoid. 

 In this species it is not of the typical form, as the nucleus, instead of 

 being terminal, is situated within the outer margin at the distance of 

 three millimetres from the lower or narrowed extremity, 



55. Siphonalia spadicea. Reeve. (Plate XX. fig. 38.) 



Buccinum fusoides, Reeve, Conch. Icon. iii. pi. 9. f. 64. 



Buccinum spadiceum. Reeve, /. c. (Errata). 



Siphonalia spadicea, A. Ad. Ann. & Mag. Nat. Hist. 1863, 

 vol. xi. p. 203. 



Hab. Stations 25 and 32, and Port Hamilton, 10 fathoms, 

 34° 32' N. lat., 127° 15' E. long. " Mino-Sima 03 fathoms" 

 \a. Ad.). 



The specimen described by Reeve is somewhat worn and the 

 colouring faded. In fresh examples, besides the brownish irregular 

 blotching, chiefly between the plications, there are certain of the 



