1886.] 0. F. von Mollendorff— T/^e LandsTiells of PeraJc. 313 



46. DiPLOMMATINA NEVILLI, CrOSSe. 



Crosse, J. de Conch., xxrii, 1879, pp. 203, 339, t. viii, f. 2 (Palaina). 



Discovered by Dr. Townsend and also found by Mr. Hungerford at 

 Buket Pondong. I do not know why the author classes it as a Palaina ; 

 it appears to me to be a typical Biplommatina with well-developed colu- 

 mellar lamella. The truncation of the columella and the canal-like angle 

 at its base are similar to thoso of the last-named species, though not 

 quite so distinct. It is only 3 mill. long. 



47. DiPLOMMATiNA CROSSEANA, Godwin- Aust. & G. Xev. 



Godwin- Austen & Nevill, P. Z. S., 1879, p. 738, t. Ix, f. 3, 3a. 



Buket Pondong {JDr. Townsend, B. Hungerford) . 



Very small, only IJ mill, in length, dextrorse, antepenultimate 

 whorl the largest. I believe it to belong to the section Biancta^ Mart. 



48. DiPLOMMATiNA MiRABiLis, Godwin- Aust. & G. N'ev. 



Godwin-Austen & Nevill, 1. c, p. 739, t. Ix, f. 4, 4a, 4&. 



Buket Pondong {JDr. Townseyid), not found by Mr. Hungerford. 

 Dextrorse, If mill, in length. From the figure and description I see no 

 reason why it should be classed as Palaina, as the authors have it. 



49. DiPLOMMATiNA SUPERBA, Godwin- Aust. & G. Nev. 

 Godwin- Austen & Nevill, 1. c, p. 739, t. Ix, f. 5, 5a {Palaina). 



Buket Pondong {Townsend and Sung er ford). 



This truly " superb " little shell presents, it is true, some similari- 

 ties with species of Palai^ia, but chiefly in the sculpture, on which sub- 

 generic distinctions should not be based. On account of the constricted 

 penultimate whorl I should class it as a Biancta. 



50. Opisthostoma PAULUCCiiE, Crosse & !N"evill. 



Crosse & Nevill, J. de Conch., xxvii, 1879, pp. 197, 205, 339, t. viil, f. 1. 

 Godwin- Austen & G. Nevill, Proc. Zool. Soc, 1879, p. 738, t. Ix, f. 2, 2a, 2&. 



51. Opisthostoma perakense, Godwin-Aust. & G. Nev. 

 Godwin- Austen & Nevill, 1. c, p. 738, t. Ix, f. 1, la, 1&. 



Of these two species, both discovered by Dr. Townsend at Buket 

 Pondong, Mr. Hungerford has, so far as I can see, only found the latter 

 at the same locality. 



