183 Mr. L. Keeve on the History, Synonymy, and 



collection, notwithstanding that the species was described and 

 figured by Chemnitz, is the only one known to me) might readily 

 be taken for a worn mis-shapen specimen of K. rubra but for 

 one important character : the dorsal valve is conspicuously ser- 

 rated within the margin by a row of spinous teeth. No mention 

 is made of this character in the diagnosis of the British Museum 

 Catalogue ; but it is figured and carefully described by Chem- 

 nitz — " margine interiori subtilissime et acutissime denticulato." 



37. Terebratula {Kraussia) pisum, Valenciennes apud Lamk. 

 Anim. sans Vert. vii. p. 330 ; Conch. Icon. pi. 9. f. 36 a, b. 



Terebratula Natalensis, Krauss. 

 Kraussia pisum, Davidson. 



Hab. South Africa. 



This little species, which M. Valenciennes named " the pea,^' 

 and likened to a cherry-stone, resembles K. Lamarckiana ; but it 

 is constantly distinguished by the fineness of the radiating ridges, 

 while it is of larger size. 



38. Terebratula (Kraussia) Deshayesii, Davidson, Proc. Zool. Soc. 

 1852, p. 80, pi. 14. f. 20, 21; Conch. Icon. pi. 9. f. 35 a, h. 



Terebratula Capensis, Adams and Reeve (not of Gmeliu). 

 Kraussia Deshayesii, Davidson. 



Hab. Cape of Good Hope (dredged from a depth of 120 

 fathoms) ; Belcher. 



Very closely allied to K. pisum and Lamarckiana, but of 

 a more triangular form, and painted in a characteristic man- 

 ner with crimson rays. The habitat " Corea " given by Mr. 

 Davidson for this species, on the authority of Mr. Cuming, 

 is incorrect. Kraussia Deshayesii was dredged oif the Cape of 

 Good Hope in the same vessel in which Terehratulina abyssicola 

 was dredged at Corea ; and the labels got confounded together. 

 Kraussia is as exclusively a type of the south temperate zone as 

 Terehratulina is of the north temperate. 



39. Terebratula [Kraussia) Larnarckiana, Davidson, Proc. Zool. 

 Soc. 1852, p. 80, pi. 14. f. 22, 23; Conch. Icon. pi. 9. f. 34. 



Terehratella Lamarckiana, Davidson. 

 Hab. Sydney and New Zealand. 



This little species is of a bi-oadly ovate pouch-like form, 

 flexuous in growth and rather strongly wrinkled. It has the 

 bifurcated apophysis of Kraussia, but is a little removed from 

 the typical forms of the group, all of which are natives of South 

 Afi'ica. The septum in this species is continued bej^ond the 

 point of bifurcation nearly to the margin, which is in both valves 

 neatly spinulose. 



