172 Mr. L. Reeve on the History, Synonymy, and 



mud at a depth of 10 to 12 fathoms); Capt. Dare. Falkland 

 Islands, fide Cuming. 



Mrs. De Burgh possesses a specimen of T. uva exactly similar 

 to the original specimen, hitherto considered unique, in Mr. 

 Cuming's collection; and Mr. Cuming has recently received 

 three Terebratula of smaller size from the Falkland Islands, 

 specimens of which are also in the British Museum, which I can 

 only assign (and Mr. Woodward agrees with me) to this species. 



Subgenus 2. Terebratulina, D'Orhigny. 



Apophysis a small unreflected loop arched into a circle on 



projecting blades. 



3. Terebratula (Terebratulina) caput-serpentis, Linnaeus, Syst. 

 Nat. p. 1153 ; Conch. Icon. pi. 4. f. 15 a, b. 



Anomia caput-serpentis, Linnaeus. 



retusa, Linnaeus. 



pubescens, Linnaeus. 



Terebratula pubescens, Miiller. 



caput-serpentis, Val. apud Lamk. 



costata, Lowe. 



aurita, Fleming. 



striata, Leach. 



septentrionalis, Couthouy. 



conica, D'Orbigny. 



Terebratulina caput-serpentis, D'Orbigny. 

 Delthyris spatula, Menke. 



Hab. North and South European and North American Seas 

 (at depths of from 10 to 150 fathoms). 



The oldest, best-known, and most widely spread of the 

 Terebratula. It ranges throughout the European Seas, from 

 the Arctic to the Mediterranean, and appears in North America 

 in a more finely striated form, known as T. septentrionalis. It 

 is represented in the Corean and Japanese waters by T. abys- 

 sicola and T. Japonica. 



4. Terebratula [Terebratulina) Japonica, Sowerby, Thes. Conch, 

 i. p. 344, pi. 68. f. 7, 8 ; Conch. Icon. pi. 4. f. 16. 

 Terebratula angusta, Adams and Reeve. 



Hab. Corea, Japan. 



Closely allied to T. caput-serpentis, and, without doubt, its 

 typical representative in the Corean and Japanese Seas. 



5. Terebratula [Terebratulina) cancellata, Koch, Kiister, Conch. 

 Cab. vii. pi. 2b. f. 11-13 ; Conch. Icon. pi. 4. f. 13. 



Hab. West Australia? Koch. 



This species partakes very mtich of the character of the two 



