NATURAL SCIENCES OF PHILADELPHIA. 195 



Corap. Zool. 1. c. p. 19, pi. i. fig. 6, 6a. May, 18T1. Am. 

 Journ. Conch, vii. p. G8. July, 1871. 



Tortugas. 



6. CiSTELLA WOODWARDIANA, DaviclsOll. 



Argiope Woodioardiana, Dav. P. Z. S. p. 103. Feb. 1866. 



pi. xii. fig. 4 a-c. 

 Cistella WoodivarxUana, Dall, Am. Journ. Conch, vi. p. 146, 



vii. p. 69. Bull, M. C. Z. 1. c. p. 42. 



Jamaica. 



Family THECIDIID^, Dall. 



Thecidas, Desh. Ency. Meth. iii. 1836. 



? Thecidiidse, Dall, Am. Journ. Conch, vi. p. 14t. 1870. 



Genus THECIDIUM, Defrance. 



T/ieciiZea, Defr. Fdrussac, Tabl. Syst. p. 38. 1828. 

 Thecidium, Lacaze Duthiers, Ann. Sci. Nat. Zool. t. xv. p. 



262. 1861. 

 Theciduim, Sby. Gen. Shells, xx. 1844. Dav. Intr. Brit. 



Brach. p. 77. Dall, Am. Journ. Conch, vi. p. 147. . 



1. Thecidium Barretti, Woodward. 



T. Barretti, Woodv. Geol. Mag. i. pi. ii. f. 1-3. 1864. Dav. 

 P. Z. S. p. 104. 1866. Dall, 1. c. p. 151. 



Jamaica. 



2. Thecidium Mediterraneum, Risso. 



Thecidea 3Iediterranea, Risso, Eur. Mer. p. 394, fig. 183. 



Desh. Lam. vii. p. 346, Phil. Moll. Sic. i. p. 99, t. 6, fig. 17. 

 T. Mediter7^aneicm, Sby. Thes. Conch, vii. p. 371, pi. 73, figs. 



30-32. 1846. Lacaze Duthiers, 1. c. p. 262, pi. i.-iv. 



Dall, 1. c. p. 151, fig. 27. 

 T. testudinaria, Michelotti. 

 T. spondylea, Scacchi. Jamaica ? Blediterranean. 



Family RHYNCHONELLID.E, Gray. 



Bhynchonellidae, Gray, B. M. Cat. 1850. Dav. Intr. Brit. 

 Brach. p. 73. 1851. Dall, 1. c. vii. p. 69. 1871. 



Genus RHYNCHONELLA, Fischer. 



Bhynchonella, Fischer de Waldheim, Not. Fos. du Gour. de 



Moscou. 1809. (Type B. loxia, F., Jura.) 

 Stenocisma ? James Hall. 



