Biological Papers. I75 



Cryptochiton stellere Middleton. Giant chiton. 

 Plate III, fig. 74. (Showing plate only.) 



This "Chinese slipper" is very common. It is pulled off of 

 the rocks by the natives, boiled whole, then the meat is dug 

 out and eaten. The natives relish it very much. 



Acmasa pelta Eschscholtz. 

 Plate I, fig. 28. 



Very common on rocks at tide-line. It is used as food by 

 the natives. It is not likely that white people would relish it. 



Glyphis {Fissuridea) aspera Eschscholtz. 

 Plate I, fig. 6. 



This is a very common species and is much sought by both 

 the natives and the whites. The former pull them off of the 

 rocks, where they adhere in great numbers at tide-line, and 

 use them as food; the latter string the shells on strings and 

 use them for ornamentation and decoration. 



Calliostoma costatum Martjm. 



Plate III, flg. 76. 



Very common in the seaweed among the rocks of the tide 

 flats. 



Margarita pupilla. 

 Plate II, flg. 40. 



This shell, colored in purple or pink, is very pretty. It is 

 quite abundant. It is found principally among the seaweed 

 of the rocky coast. The shells are used for ornamentation. 



Chlorostomum funebrale. 

 Plate I, fig. 25. 



This is a very common species. It is to be found principally 

 among the seaweed of the tide flats. 



(Litorina) Nassa fossata Gould. 



Plate III, fig. 89. * 



Only a broken specimen of this species was obtained. 



Litorina scutulata Gould. 

 Plate III, fig. 84. 



Litorina sitkana Philippi. 

 Plate III, flg. 83. 



The last two species are found everywhere sticking to the 

 rocks at tide-line. They are also to be found in the shallow 

 pools left by the receding tide. The former species is black 

 in color ; the latter of a lighter hue. 



Scalaria indioMoruvi Carpenter. 



Plate II. fig. 69. 



This species is very rare. 



