112 JAPANESE MOLLU8K8, PATELLID^. 



PATELLIDJE. 

 Patella (Scutellastra) stelleeformis Reeve. 'Pilsbry, Man. of Conch., 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. 



Helcioniscus nigrisquamatus 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, 

 Benin 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 boninengis 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 nigrisquamatus, but all the specimens I 

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

 ual is figured. 



Helcioniscus Btearnsii 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 of nigri- 

 squamatus of the same size. 



Helcioniscus pallidut Gld. Man. of Conch., XIII, p. 133, pi. 67, f. 9, 10. P. 

 lamanonii Schrenck, Amur!., pi. 14, f. 6-9. 



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

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



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

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



Enoshima (Stearns) ; Hakodate (Stearns). 



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

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

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



