110 JAPANESE MOLLU8K8, ACM^EIDJE. 



Emarginula textilis Gould. Old., Otia, p. 116. 



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



Suhemarginula picta Dkr. Dkr., Moll. Jap., p. 24, pi. 12, f. 15. 

 Deshima (Dkr.) ; Nagasaki (Lischke). 



Suhemarginula (Tugalia) gigas v. Martens. (Saru-aivabi). Mart.. Conch. Mit- 

 thoil. II, p. 103, pi. 19 ; Pils., Man. Conch., XII, p. 286. 



Northern Japan (Mts.). 



Scutus unguis Linne". Pils., Man. Conch., XII, p. 289, pi. 40, f. 4-8. (Parmo- 

 phorus japonicus Tapparone-Canefri.) 



Nagasaki (Stearns). 



Besides the synonyms given in the Manual of Conchology, Patella 

 scapha Gmelin, Syst. Nat. 13, p. 3727, belongs to this species. 



PHENACOLEPADIDJE. 



Phenacolepas pulchellus Lischke. Lischke, Jap. Meeres-Conch., 11, p. 100, pi. 6, 

 f. 20-23. (Scutellina). 



Nagasaki (Lischke). The generic names Scutella and Scutellina 

 being preoccupied, have been changed as follows : 

 Scutella Brod., P. Z. S., 1834, p. 47, not of Lam., 1816. 

 Scutellina Gray, P. Z. S., 1847, p. 168, not of Agassiz, 1841. 

 Phenacolepas PiUbry, Nautilus, v, 89, Dec., 1891. 



Phenacolepas unguiformis Gould. Old., Otia, p. 115; Man. Conch., XII, p. 129. 

 (Scutellina). 



Kagoshima (N. P. E. E.). 



Phenacolepas scobinatus Gould. Gld., Otia, p. 115; Man. Conch., XII, p. 129. 

 (Scutellina). 



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



(Docoglossa). 

 ACMJEIDJE. 



Acmsea schrenckii Lischke. Lischke, Jap. Meeres-Conch., I, p. 107, pi. 8, f 1-4. 

 (plus A. concinna Lischke). 



Nagasaki (Lischke) ; Ojima, Yokohama and Hakodate (Stearns). 



A wonderfully variable limpet. In the large series collected at 

 Ojima the typical schrenkii is represented by several varieties. Some 

 have the color pattern shown in Lischke's figures, others a coarsely 

 tessellated design ; the radial riblets being either smooth or finely 

 beaded. Another variety is the concinna of Lischke (Jap. Meeres- 

 Conch., II, pi. 6, f. 16) rounder in outline, more elevated, and all 

 over finely beaded, and mostly unicolored blackish ; but many in- 



