230 Panama Shells. 



Calyptraza (Crepidula) squama Brod. in Trans. Zool. Soc. Lond. 



I. 205. pi. 29. f. 10. 1835. 



Mull. Synop. Nov. Test. Viv. p. 



151. -May 1836. 



Crepidula Lara. An. sans Vert. VII. 648. 



No. 16. (Desh. ed.) 1838. 



Lam. An. sans Vert. III. Pt. 1. p. 



239. No. 16. (Desh. ed. tert.) 1841. 



The specimens vary much in color : the normal arrangement 

 is with dark reddish brown rays on a whitish ground ; in some 

 shells the rays are few and faint ; in others they are crowded or 

 even confluent. The surface is incurved or excurved according 

 to the figure of the spot on which they grow. 



Station. Under stones and in dead shells near low water mark. 



Habitat. Panama ; Cuming ! Broderip : also Muller. 



Panama ; Deshayes : also Jay. 



Panama ; C. B. A. ! 

 35 specimens were collected. 



350. Crepidula imguiformis. 



Synonymy. 



Gualt. Test. pi. 69. f. 11. 1742. 



Patella crepidula Linn. Syst. Nat. p. 1257. No. 752.(Ed. 12.) 1767. 



Gmel. in Linn. Syst. Nat. p. 3695. No. 17. 1788. 



Turt. Linn. Syst. Nat. IV. 554. 1806. 



Broc. Foss. Subapp. II. 253. 1814. 



Crepidula unguiformis Lam. An. sans Vert. VI. Pt. 2. p. 25. No. 4. 181 8. 

 Italka Defr. Diet, des Sc. Nat. XL 397. 1818. 



- plana Say Journ. Acad. Nat. Sc. Phil. (Old Ser.) 



II. 226. July 1821. 



- Italica Diet. Classique d'Hist. Nat. V. 54. April 1824. 



unguiformis Sowb. Gen. pi. f. 6. 1824. 



calceolina Desh. Encyc. Meth. Vers. II. 26. No. 6. 



(2nd ser. pag.) 1830. 



plana Say Amer. Conch, pi. 44. 1830. 



unguiformis Brod. in Proc. Zool. Soc. Lond. p. 39. May 1834. 



