36 Panama Shells. 



Cijproea pustulata, Dillw. Catal. I. 469. 1817. 



Wood Ind. Test. pi. 17. f. 63. 1818. 



Lam. An. sans Vert. VII. 400. No. 56. Aug. 1822. 



Sowb. Gen. f. 5. 1824. 



Gray in Zool. Journ. I. p. 513. 1825. 



Trivia Gray Descr. Catal. p. 16. No. 138. June. 1832. 



Penny Cyclop. VIII. 257. f. 1837. 



Cijprcp.a Sowb. Coneh. 111. pi. 102. f. 71. 1841. 



Kiencr Iconog. p. 128. pi. 2. f. 3. 



Reeve Conch. Icon. pi. 15. f. 76. Dec. 1845. 



. Chenu Lee. Llem. pi. II. f. 11. 12. 1847. 



Specimens differ much in size : one is 1.04 inch long, and 

 .6 inch wide ; another is .55 inch long, and .33 inch wide. 

 But we have never seen a specimen as large as Mr. Reeve's 

 figure, which is 1.22 inch long and .73 inch wide. 



Station. UnJer stones ; Cuming ! Reeve. 



We found this species alive under large stones, at the ex- 

 treme low water mark of the spring tides only. 

 Habitat. Coasts of China, according to Humphreys ; Aca- 



pulco, according to Lamarck ; Dillwyn. 

 China ; Wood. 

 Western shores of Mexico, at Acapulco ; Hum- 



boldt and Bonpland ! Lamarck. 

 West coast of Mexico ; Say in Catal. Mus. 

 Panama and Isle of Plata, Mexico; Sowerby. 

 Pacific Ocean ; Gray : also Penny Cyclopedia. 

 Western shores of Mexico, near Acapulco , Kiener. 

 Isle of Plata and Panama, west coast of America ; 



Curning ! Reeve. 

 Mazatlan ; Melchers ! Menke. 

 Panama ; Jay. 

 Panama; C. B. A! 



The citation of China, as a habitat of this species, is an 

 error due probably to hearsay testimony. The Isle of Plata 

 mentioned by Sowerby and by Reeve is probably the island of 



