NATURAL SCIENCES OP PHILADELPHIA. 229 



5. T. Japonica, A. Adams, Ann. Mag. Nat. Hist. ix. 225. 1862. 



Japan. 



6. T. tumlda, Carpenter, Philad, Proc. 58. 1865. 



Sts. of Fuca to San Diego, Gal. 



7. T. tumidula, Jeffreys, Brit. Conch, v. 177. 1869. 



Shetland, Hebrides. 



CATALOGUE AND SYNONYMY OF THE FAMILY LASELDJE. 

 BY GEO. W. TRYON, JR. 



Family LASEID^, H. & A. Adams. 



Genera of Recent Mollusca, ii., 473. 1857. 

 Genus LASEA, Leach. 

 Brown, Brit. Conch., t. xx. 1827. 

 Poronia, Recluz. Revue Zool., 166. 1843. 

 Cycladina, Cantraine, Bull. Brux. ii., 399. 1835. 



1. L. Australis, Souverbie, Jour, de Conch. 287, 1. 12, f. 8. 1863. 



New Caledonia, Australia. 



2. L. incerta, Recluz. 



3. L. Parreysii, Phil. Zeit. Mai. 72. 1847. 



Australia. 



4. L. physoides, Lam. Anim. s. Vert. v. 493. 1818. 



Port George. 



5. L. purpurata, Phil. Zeit. Mai. 72. 1847. 



Australia. 



6. L. rubra, Mont. Test. Brit. 83, t. 27, f. 4. 



Amphidesma nucleola, Lam. Anim. s. Vert. v. 493. 1818. 



Erycina violacea, Scacchi, Cat. 6. 



Cycladina Adansonii, Cantraine, Bui. Acad. Brux. ii. 

 1835 



Bornia semilunum, Phil. Moll. Sicil. i. 14, 1. 1, f. 16. 1836. 



Poronia Petitiana, Chenu, 111. Conch, t. 1, f. 2. 



Cyclas Australis, Lam. Anim. s. Vert. v. 560. 1818. 



Iceland, Norway, England to Mediterranean, 

 W. Coast Africa to Gape Good Hope, Ca- 

 nary Islands, Massachusetts to Magellan's 

 Straits, West Coast of North and South 

 America, Singapore, Timor, Java, Aus- 

 tralia,. 



