of Recent Brachiopoda. 367 



ing again and doubling itself in the shape of a loop as in Tere- 

 bratula. The variations in the details and in the position of the 

 lamella and septum in some species of Terebratella, such as T. 

 crenulata, Evansii and Cumingii, connect this genus with Magas, 

 so that the last genus will not form a separate family as generally 

 supposed. 



Fourteen or fifteen species of recent Terebratella have been 

 described and figured, all in general characterized by a longitu- 

 dinal depression in the smaller valve ; but some of the species 

 enumerated dhTer so little from one another as to make me doubt 

 the propriety of retaining them all under distinct appellations. 



17. Terebratella dorsata, Lam. sp., 1819 ; Sow. Th. Conch, pi. 68. 

 fig. 15, 16, 17. 



Hab. Straits of Magelhaens. 



18. Terebratella fieocuosa. King sp., Zool. Journ. vol. v. ; Sow. 

 Th. Conch, pi. 69. fig. 23, 24. 



Hab. Straits of Magelhaens, in the vicinity of Port Famine. 



19. Terebratella Chilensis, Brod. sp., 1833; Zool. Proc. ; Sow. 

 Th. Conch, pi. 68. fig. 18, 19. 



Hab. Bay of Valparaiso, 90 fathoms. 



20. Terebratella Sowerbii, King sp., 1835; Zool. Journ.; Sow. 

 Th. Conch, pi. 68. fig. 20-22. 



Hab. Straits of Magelhaens. 



21. Terebratella Coreanica, Adam and Reeves sp., 1850, Voy. 

 of the Samarang, pi. 21. fig. 3. 



Hab. Corean Archipelago. This species is beautifully strigated 

 with bright red, which distinguishes it from T. Bouchardii, which 

 is of a uniform yellow colour. 



22. Terebratella Bouchardii, Dav. 1852; Zool. Proc. 

 Hab. Unknown. 



23. Terebratella rubicunda, Sow. sp., 1846; Zool. Journ. ; Sow. 

 Th. Conch, pi. 70. fig. 45, 46, 47. 



Hab. Abundant in the seas near New Zealand ; its colour is 

 vivid red or white. T. inconspicua, Sow., seems to be onlya 

 young and ill -grown specimen of this species. 



24. Terebratella Zelandica, Desh. sp., 1830; Sow. Th. Conch, 

 pi. 72. fig. 111-113. 



Hab. Cook's Straits, New Zealand, depth 15 fathoms. This 



