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AMERICAN JOURNAL 



Type. Terehratulina caput serpentis. L. sp. 



A7iomia caput serperitis, Linn., Syst. Nat. ed. 12, 1153, 1767. 

 Terehratulina caput serpentis, D'Orb., Ann. Sci. Nat. viii, 67, 



pi. vii, fig. 7, 8, 17, 1848. 

 Terehratulina cornea, D'Orb., 1848. 

 Terehratula jjuhescens, Retz., N. Gen. 15. 

 Anomia retusa, Linn., S. N. 12, p. 1151. 

 Delthyris spatula, Mke., Syn. ed. 2, 96. 

 Terehratula aurita, Flem., Phil. Zool. 

 Terehratula costata, Lowe, Zool. Journ. 

 Terehratula striata, Leach, Br. Moll. 

 Terehratula Qervillei, S. Wood, Mag. N. H. v, p. 253. 



Hah. North and East Atlantic. Smithsonian Cabinet, 14, 187. 



Fio-. 



Fig. 4. 



'Fig. 3. Terehratulina capufserpmtis, D'Orb., haemal valve. 

 Fig. 4. Same, showing the animal. 



This species, by the coarser and rougher stri?e, and usually 

 more elongate and less inflated valves, seems sufficiently distin- 

 guished from T. septentrionalis. Couth. 



It is reported from Japan, by A. Adams. Perhaps his speci- 

 mens may have been T. augusta, Ad. (= T. Japonica, Shy. 

 teste Rve.), or possibly Terehratula unguicula, Cpr. 



The other recent species of this genus are : 



Terehratulina Japonica, Sby,, Tlies. Conch, vii, p. 344, pi. 68, 

 fig. 7, 8. Hab. Japan. 



? Terehratulina Cumingii, Dav., P. Z. S. 1852, p. 79, pi. xiv, 

 fig. 17, 18, 19. Hab. China Seas, Japan. 



Terehratulina ahyssicola. Ad. and Rve.j Voy. Samarang, Moll, 

 p. 72, pi. xxi, fig. 5. Hab. Gulf of Corea. 



Terehratulina radiata, Rve., Conch. Icon. pi. iii, fig. 7 a, 7 b. 

 Hab. Gulf of Corea, Belcher. 



Terehratulina cancellata, Koch, Kuster Conchyl. Cab. v, vii, 

 pi. ii b, fig. 11 and 15. Hab., West Australia, Suess. 



Terehratulina Caillettil, Crosse, Journ. de Conchyl. 1865, p. 

 27, pi. i, fig. 1, 2, 3. Hab. West Indies. 



