/Z HENRY CLIFDEN BURNUP. 



holed, in my collection, that the new form might possibly be 

 inseparable from their species. Mr. E. A. Smith, therefore, 

 most kindly undertook the comparison of my type with the 

 type of juxtidens in the British Museum, and has furnished 

 me with the following' detailed report : 



"Ennea juxtidens, type, is a larger shell than yours, 

 the sculpture is hardly apparent, or at all events much less 

 visible than in your shells : the peristome is- stronger, 

 especially on the columellar side, where, and at the base, it 

 is i-ather more expanded than in inhluzaniensis. The 

 parietal lamella, beyond being stronger, offers no difference 

 of any importance — it arises higher on the body-whorl than 

 the suture, just the same as in your shells. The columellar 

 fold is quite the same as in inhluzaniensis. The tooth on 

 the labrumis of the same character. In juxtidens there is 

 a feeble denticle low down on the columellar side, but not 

 quite basal ; it is well within the edge of the peristome. The 

 swelling about the middle of the collumellar lip in your 

 shells is higher up than the faint tooth in juxtidens. This 

 is the most distinguishing feature in M. & P.'s species in 

 comparison with yours. 



" On the whole I think it would be safer to regard inhlu- 

 zaniensis as a distinct species rather than as a variety of 

 juxtidens." 



Since seeking Mr. Smith's opinion, Mr. J. H. Ponsonby has 

 generously given me a mature co-type of E. juxtidens in 

 excellent condition, from his own collection. Thus I am 

 enabled to present new figures of that species (PL V^, figs. 

 57, 58, 59) for comparison with those of inhluzaniensis. 

 The dimensions are — height 4"53, width 2*05 mm. In con- 

 sidering the difference in size, it should be borne in mind 

 that the figures of inhluzaniensis are magnified by 9*2 

 diameters, and those of juxtidens by 7"45. 



Mr. Farquhar has suggested a relationship between 

 inhluzaniensis and elliptica Melv. & Pons., and 

 though I think the differences are too many and too great to 

 admit of close affinity, the size and general form of the 



