CREPIDULA. 



these are to be added C. amygdalus, Yal., (7. Cerithicola, 



Ad. (juvenile), C. ma^ginalis, Brod. (figs. 48, 49), C. lirata, 



Reeve (fig. 50), and perhaps C. SitcJiana, Midd. (fig. 59). 



Section GARNOTIA, Gray, 1867. 



C. ADUNOA, Sowb. PI. 38, figs. 51-55; PL 37, figs. 39, 40; 

 PL 39, fig. 60. 



Usually rather high, compressed on the sides, or subtriangular 

 with a sharp hooked beak distant from the margin, smooth ish, 

 chestnut-brown, under a light yellowish brown epidermis, with 

 sometimes indistinct rays, more or less broken up into spots, 

 interior also chestnut color. Length, 1 inch. 



Panama Sts. of Fuca. 



A very common West Coast form, the distinctive character 

 of which may result mainly from its attachment ; the coloring 

 does not differ from G. onyx. The synonyms are G. solida, 

 Hinds (fig. 52), C. rostriformis, Gould (figs. 53, 53 a), G. 

 uncata, Menke, C. jixsurata, Sowb. (fig. 60), and G. rostrata, C. 



B. Ad. G. excavata, Brod. (figs. 54, 55), is a large form, a 

 variety of which has been named fusco-punctata by Morch. G. 

 incurua, Brod. (figs. 39, 40), is normalty radiately ribbed, but 

 intermediates occur between it and the smooth typical form. 



Section CRYPTA (Gray), Fischer, 1885. 



C. ACULEATA, Ginel. PL 39, figs. 61-65. 



Oval, moderately convex, apex lateral, spiral, surface covered 

 with radiating prickly or spiuose ridges ; whitish, yellowish or 

 brownish, often chestnut-rayed, interior often splotched or 

 rayed with chocolate, septum white. Length, 1-1'5 inches. 

 Florida to Patagonia, and West Coast of America 



northwards to Southern California, Sandwich 



Inlands, Japan, Australia, Mauritius, India, etc. 

 A cosmopolitan species, varying in the development of the 

 spines, and with a considerable s\'nonymy : C. echinus (fig. 63) 

 and G. hystrix (fig. 64), of Broderip, G. Californica, Nuttall, 

 MS., G. costata, Menke (fig. 65). G. strigata and C. foliacea, 

 Brod., which I have referred to the synonymy of C. dorsata, 

 may possibly belong here. 

 9 



