366 



Mr. T. Davidson on the Classification 



11. Terebratulina Caput-serpentis, Linn, sp., 1773; Sow. Th. 

 Conch, pi. 68. fig. 1-4, &c. 



Hab. Many parts of the Scottish coast, &c, in from 10 to 

 50 fathoms : this species is likewise found fossil in all the strata 

 from the chalk upwards. 



12. Terebratulina septentrionalis, Couthouy sp. ; Sow. Th. Conch, 

 pi. 68. fig. 5, 6, 1846. 



Hab. Coast of Maine, Massachusets. 



13. Terebratulina Japonica, Sow. sp., 1846 ; Th. Conch, pi. 68. 

 fig. 7, 8. 



Hab. Seas of Japan. 



14. Terebratulina cancellata, Koch sp. ; Kuster, Neur. ed. 

 Martini Chemnitz, vii. 1. t. 2 b. fig. 11-13. 



Hab. Unknown. 



15. Terebratulina abyssicola, Adam and Reeves, sp. 1850, Voy. 

 of Samarang. 



Hab. Cape of Good Hope, depth 120 fathoms ; these two last- 

 named species require further examination. 



16. Terebratulina Cumingii, Dav. Zool. Proc. 1852. 

 Hab. China seas. 



III. Genus Terebratella, D'Orb. 1847. 



The animal of this genus has been well described by Prof. 

 Owen in the ' Trans, of the Zool. Soc. ;' it differs from Terebratula 

 by its loop being doubly attached ; the lamella? proceeding from 

 the crural base, before attaining their greatest length, give off a 



flat, wide, more or less horizontal process, likewise affixed to a 

 more or less elevated longitudinal septum, the lamella proceed- 



