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cs, 
NEW SPECIES OF CALYPTRAIDA. 203 
21. Catyprra#a pivatata, Lam. 
Varietas intis nigro-castanea. 
Tab. XXVIII. Fig. 11. 
Cal. testd sordide albd castaneo strigatd, intus nitidé nigro-castaned, lamind albd. 
Diam. 1+ poll., lat. 14, alt. 4. 
Hab. ad Valparaiso. 
This highly coloured variety was found on exposed rocks at low water. The pure 
white of the plate shows to great advantage, lying above the rich back ground of the 
interior of the shell. In some individuals this internal colour is all but black. 
22. CALYPTRA&A STRIGATA. 
Tab. XXVIII. Fig. 12. 
Cal. testé subcorrugatd, sordidé rubra albo varid, intis subrufé interdum alba vel albé 
rubro-castaneo varid. 
Diam. | poll. 
Hab. ad Valparaiso. 
This varies much both in colour and shape. Some of the specimens are quite flat, 
and the plate is almost convex. An obscure, subarcuate, longitudinal, whitish, broad 
streak may be traced on the backs of most of them. It is not impossible that it may 
be a variety of Cal. dilatata. 
Found on Mytili at depths varying from three to six fathoms. 
23. CaLtyrTr&#aA Ecuinvus. 
Tab. XXIX. Fig. 1. 
Cal. testd albidé violaceo maculatd, interdum fuscd, striis longitudinalibus creberrimis, 
spinis fornicatis horridd, intus flavente vel albé. 
Diam. 1+ poll., lat. 14, alt 4. 
Hab. ad Peruviam. (Lobos Island.) 
In old specimens the spines are almost entirely worn down, and rough strie only for 
the most part remain. In this state it bears a great resemblance to the figure given of 
Crepidula fornicata in Mr. Sowerby’s ‘ Genera of Shells’, No. 23. f. 1. 
Found under stones at low water. 
24. Catyprr#a Hystrix. 
Tab. XXIX. Fig. 2. 
Cal. sordidé alba vel fuscd, complanatd, longitudinaliter striatd, spinis magnis fornicatis 
apertis seriatim dispositis, intis albidd interdum castaneo maculatd. 
Diam. 14 poll., lat. 2, alt. 2. 
VOL. I. 25 
