196 



front of the periphery the posterior one is nearly as prominent 

 as the peripheral one. 



Colour white, with spots of reddish-brown on the lirre, grouped 

 in nearly axial lines across the anterior-half of the penultimate 

 whorl, and across the body- whorl to its base. 



Dimensions. — Height, 4; diameter, 3'25. 



Habitat. — -West Australia, exact locality not known. (Three 

 examples in my collection.) 



Affinities. — In its clathrate ornament, elevated spire, and 

 biangulated whorls, this new species resembles E. angulatus, 

 Pease, E. 2^cmperculus, Lischke, E. scrobicidatus, Souverbie, but 

 differs from them iyiter alia by its unidentate columella. 

 E. instrictusj Gould, may perhaps approach nearer, but the 

 Australian shell has fewer lirie, and the transverse ornament is 

 closer and finer ; and though the mouth-aperture is similar, yet 

 the Polynesian shell is deeply umbilicate. 



Euehelus pumilio, spec. nov. PI. i., fig. 8. 



The shells to which I give this name are closely related to those 

 of the foregoing species, E. fenestratiis, they differ by their more 

 rapidly-increasing whorls, in having two stout lira? on the penul- 

 timate-whorl, five on the body-whorl, the stouter and more 

 distant transverse riblets which, moreover, are less oblique or 

 nearly axial in direction, and by the feebler nodosities on the 

 lirae. The colour-spots are usually confluent on the axial riblets. 



Dimensions. — Height, 3 ; diameter, 3-25. 



Localities. — Fowler Bay and Head of Great Australian Bight. 

 (Six examples in my collection.) 



Euehelus vixumbilieatus, xpec. not: Pi. i., fig. 4. 



Shell similar to E. scahriusculus, but relatively broader and 

 the whorls more convex. The penultimate whorl has four narrow 

 subequal and equidistant cinguli latticed by nearly equally thick 

 oblique costal, which produce slight granulations on the cinguli 

 and divide-up the surface into rhombic spaces. This open latticed 

 ornament, though present in E. scahriusculus, is almost concealed 

 by the closeness of the thick cinguli, which are densely studded 

 with granules. There are fourteen beaded cinguli on the body- 

 whorl between the beaded umbilical border and the suture. The 

 colour is white, with pink spots ; but the shell has not been seen 

 in a fresh state. 



Dimensions. — Height, 5*5 ; basal diameters, 5*5 and 5. 



Localities. — AVest coast of South Australia (many examples); 

 Hardwicke Bay (one example); also West Australia. 



Euehelus anneetans, s7>ec. nov. 

 This species has the same shape as the preceding, but differs in 

 the following particulars : — The penultimate whorl has five 



