CREPIDULA. 129 



these are to be added C. amyydalus, Yal., G. Cerithicola, C. B. 

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

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



Section Garnotia, Gra}-, 186T. 



\/ C. ADUNCA, Sowb. PI. 38, figs. 51-55 ; PL 37, figs. 39, 40 ; 

 Pi. 89, fig. 60. 



Usually rather high, compressed on the sides, or subtriangular 

 with a sharp hooked beak distant from the margin, smoothish, 

 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 diff'er from G. onyx. The synon3^ms are G. solida, 

 Hinds (fig. 52), G. roxtriformis, Gould (figs. 53, 58 a), G. 

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

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

 variety of wliich has been named fusco-punctala by Morch. G. 

 incu7-oa, Brod. (figs. 39, 40), is normally radiately ribbed, but 

 intermediates occur between it and the smooth t^^pical form. 



Section Crypta (Gray), Fischer, 1885. 



^ C. ACULEATA, Gmel. PI. 39, figs. 61-05. 



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

 with radiating prickly or spinose ridges; whitish, yellowish or 

 brownish, often chestnut-rayed, interior often splotched or 

 rayed witli chocolate, septum white. Length, 1-1-5 inches. 

 Florida to Patagonia, and West Goad of Amei-ica 



northwards to Southern Galifornia, Sandwich 



Islands, Japan, Australia, Mauritius, India, etc. 

 A cosmopolitan species, var3dng in the development of the 

 spines, and with a considerable synonymy : G. echinus (fig. 68) 

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

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

 Brod., which I have referred to the sjnionymy of G. dorsata, 

 may possibly belong here. 

 9 



