228 Panama 'Shells. OALYPTfl^lD^ 



Sabiiat.—^Unknovfn ; Deshayes. 



Mazatlan •' Melchers 1 Menke. 

 ". Mazatlan ; E. Jewett 1 Gould MSS. 

 Taboga and Panama ; 0. B. A. 1 

 . 28 specimena were collected. 



According to Dr. Krauss, C. hepatica occura iat- the Cape of 

 Good Hope. We have several specimens, collected at the Gape 

 by Dr. K., of his convex variety, which differs from our sheila 

 in having the septum very deeply placed, and the beak very 

 prominent. The depressed variety figured by Dr. K. may more 

 nearly resemble the Pacific shell, but we have no specimens for 

 comparison. Probably, however, the Cape shells belong to a 

 distinct species : but as the habitat of the original type was not 

 known, and as the original description is applicable to both, 

 we must leave this question undecided. 



347. Crepidnla incurva. 



' Synonymy. 



Calyptrxa (Crepidnla) incurva Brod..in Proc.i-Zool. -Soc. 



. Lond, p. 40. - - May 1834. 



iBrod.in Trans. ZooLSoc. 



Lond. pi. 29. f. 6. - 1835. 



• . — Miill. Synop. 'Nov. Test. 



Viv.p, 150. -- -May 1836. 



Orb. Voy. Amer. Merid. 



Moll, p. 468. - - 1843. 



Station. — On 'dead shells dredged from sandy miidj kt a de|)th 

 ranging from 6 to 10 fathoms ; Cuming ! Broderip. 



Our. specimens were, found adhering to- living shells, at and 

 near low water mark. Its favorite station was on the. shell 

 which we have mentioned as Trochus sp. indet.^, almost' every 

 one of which supported one or more of this Ch-epidula. Turbo 

 saxosus . was next in the frequency with which • it ; furnished 

 specimens. The species was found also on Golumhella rugosa, 

 G. varta, Buccinum ringens, Purpura tecta, P. undulata, Trockua 



