112 JAPANESE M0LLU8KS, TATELLID.E, 



PATELLIDJE. 



Patella (Scutellastra) stellaeformis Reeve. Pilsbry, Man, of Coneh., XIII, p. 98. 



Yedo (Lischke) ; Tsu-Shima (A. Ad.) ; Japan (Stearns). 



The specimens are like pi. 17, figs. 25, 27 of Man, Conch,, rude 

 and irregular. 



HeloioQiscus nigrisquamatas Reeve. PI. VII, figs. 1, 2. 

 Pilsbry, Man. of Conch., XIII, p. 125, pi. 48, f. 13-15. 



Coast of Prov. Ise (Stearns) ; Coast of Kii (Stearns) ; Ogasawara, 

 Bonin Is, (Stearns). 



The specimens from the Province of Kii are small. One is re- 

 presented in figs. 1, 2, of pi. VII, Those from Ise are larger, agreeing 

 well with Reeve's figures, and his type may very likely be from this 

 region. As they grow older, the interior loses its black-brown spots. 

 The localities " Australia " and " Chili " previously given for this 

 species are false. 



Helcioniscus nigrisquamatus boninensis Pils. PI. VII, fig. 3. 

 Pilsbry, Man. Conch., XIII, p. 131, pi. 66, f. 1, 2 ; pi. 67, f. 3. 



This is the large form from Bonin Is. (Stearns). It probably in- 

 tergrades completely with nigrisquaviatus, but all the specimens I 

 have seen have a larger central spatula. A very elevated individ- 

 ual is figured. 



Helcioniscus Stearnsii Pilsbry. Pi. VII, figs. 4, 5, 6. 

 Man. Conch., XIII, p. 132, pi. 48, f. 16-18. 



Coast of Prov. of Kii (Stearns, 1890). This species is readily dis- 

 tinguished from H. nigrisquamatus by the more anteriorly curved 

 blunter apex, more convex posterior slope, etc. The central spatula 

 varies from chestnut clouded in its depth with creamy to cream 

 color clouded with brown. It is more solid than specimens oi nigri- 

 squamatus of the same size. 



Helcioniscus pallidus Old. Man. of Conch., XIII, p. 133, pi. 67, f. 9, 10. F. 

 lamanonii Schrenck, Amurl., pi. 14, f. 6-9. 



Hakodate (Stearns, Stimpson, Schrenck, Dkr.) ; Yamada Har- 

 bor (Ann. Mag., 1875, XVI, p. 114). 



Helcioniscus eucosmius Pilsbry. PI. VII, figs. 7, 8, 9, 10. 

 Man. Conch., XIII, j). 148, pi. 71, f. 61-64. 



Enoshima (Stearns) ; Hakodate (Stearns). 



This is a solider, more erectly conical species than H. amussitata 

 or tor euma, and the apex is less directed forward. The coloration, 

 while characteristic, varies greatly. The species is not known from 



