364 Mr. T. Davidson on the Classification 



Section A. Terebratula with a short loop. 



1. Terebratula vitrea, Linn, sp., 1773 ; Sow. 



Th. Conch, pi. 70. fig. 56. 59*. 



Hab. Mediterranean, dredged by Prof. 

 Forbes in 92 to 250 fathoms in nullipore 

 mud. Many specimens of cretaceous Ter. 

 carnea are undistinguishable from this 

 living species. 



2. Terebratula uva, Brod. 1833; Zool. Proc. ; Sow. Th. Conch. 



pi. 70. fig. 53-55. 



Hab. From the Gulf of Tehuantepec. I have never seen but 

 one specimen of this species ; its loop is broken, but I think it 

 was similar to that of T. vitrea. 



Section B. Terebratula with a long loop. 



3. Terebratula Cranium, Muller sp., 1776; Zool. Dan. Prod.; 



Sow. Th. Conch, pi. 70. fig. 60-62. 



Hab. Coast of Norway and North Sea ; dredged by Dr. Fle- 

 ming in deep water eastward of Bressay in Zetland. 



4. Terebratula globosa, Lam. 1819 ; Sow. Th. Conch, pi. 71. 



fig. 99-101. 



Hab. Unknown. Some uncertainty exists if the species of 

 Lamarck (Ency. Meth. pi. 239. fig. 2) is the one figured by 

 Sowerby from Mr. Cuming's collection. 



5. Terebratula picta, Chemn. sp., 1785 ; Sow. Th. Conch, pi. 70. 



fig. 43, 44. 



Hab. Java. 



6. Terebratula dilatata, Lam. 1819 ; Sow. Th. Conch, pi. 70. 



fig. 48, 49. 



Hab. Straits of Magelhaens : I can perceive no difference be- 

 tween this shell and Ter. Californiana, except in the size of the 

 foramen, which is small in Koch's species. 



7. Terebratula Californiana, Koch; Kiister, Nov. Ed. Martini 



Chem. vol. viii. 1843, pi. 2 b. fig. 21-23; Sow. Th. Conch, 

 pi. 70. fig. 50, 52. 



Hab. Coast of California. 



* For convenience, and to avoid referring to numerous works, we will 

 in this short paper mention only the figures in Sowerby's 'Thesaurus Conch.' 

 1849. 



