100 JAPANESE MOLLU8K8, TROCHID^. 



Euohelus pauperoulus Lischke. Lischke, Jap. Meeres-Conch., Ill, p. 69, pi. 4, f, 

 9-11; Pilsbry, Man. Conch., XI, p. 439, pi. 63, f. 20, 21. 



Yedo (Lischke) ; Tokyo Harbor (Stearns). 



Euchelus exiguus A. Adams. Pils., Man. Conch., XI, p. 118 ; Monodonta exigua 

 A. Ad., P. Z. S., 1856, p. 176. 



Japan (Siebold). 

 Euchelus ruber A. Adams. Man. Conch., XI, p. 440, pi. 67, f. 79. 



Karaakura (Stearns). Specimens of clear, pale brown tint, with 

 light brown scattered dots, but agreeing quite perfectly with typical 

 rubra in sculpture. Also, N. shore of Tango (Gaines), a red speci- 

 men. 

 Ethalia rufula Gould. Old., Otia, p. 154. 



Ooshima (N. P. E. E.). 



This genus is here understood in the sense explained in Man. Conch., XI, 

 p. 457, not as used by authors generally. The Umlwnium anguliferum Phil., 

 reported from Yokohama by Dunker, must be a mistake, as that is a New- 

 Zealand species of Ethalia. 



Umbonella murrea Reeve. Rve., Conch. Icon., Turbo, f. 54 ; Ad., Ann. Mag. N. 

 H. (3), XI, p. 265, 1863, hander maculosu* A. Ad. 



Goto Is., 71 fms. (Ad.). 



Camilla sp. 



See Man. Conch., XI, p. 465. No good authority for the Japan- 

 ese reference seems to exist. 



Umbonium giganteum Lesson. Pilsbry, Man. Conch., p. 454, pi. 58, f. 17-19. 



Kii coast (Stearns) ; Yedo, Nagasaki (Lischke). 



The following principal color patterns occur : 



(1). Entire surface uniform blue-black. 



(2). Olivaceous, with short black and cream blotches below the 

 suture, a continuous red band at periphery, bordered below by a 

 white band. 



(3). Olivaceous-yellow, yellow, or pinkish-yellow, unicolored or 

 marked like the preceding. 



(4). Very light drab, almost white, uniform or marked like num- 

 ber 2. 



(5) Plumbeous, with a series of black and cream blotches below 

 the suture, and a series of cream and dark plumbeous maculae at the 

 periphery. 



Many specimens, especially immature ones, show a group of sev- 

 eral spiral strise immediately above the periphery. 



