3S4 On ncio Lcxtid-MoUusca from Nav Guinea. 



iliffercnt in form from tyj)ical P. phin'zonata, Ad. ^: Rvc, 

 our spi-cios has many cliaractors in common witli it, ami may 

 iiliimatelv prove to be but a variety. At presout its ;j;lohose 

 form, more covered umbilicus, coarser sculpture, ami more 

 oblique peristome seem to me to justify its separation. 



Fapuina zcno, Braz., var. suhghhosa, nov. 



Similar to typical P. zeno in coloration, but of a lin;lilcr 

 substance, sub^-lobular in form, with a thiinicr, expandetl but 

 non-reflected peristome. 



Alt. 2.5, maj. diam. 31 millim. 



Hah. Port Moresby, British New Guinea {I'^mil Weinke). 



The differences noted above are constant in the twenty- 

 five specimens before me. 



Ganesella {CoUoJus) Wet'slcei, sp. n. 



Shell conical, rather narrowly but distinctly umbilicaled, 

 covered with a dark broun periostracum, which is studded 

 with rather short hairs at the suture, apex somewhat obtuse; 

 whorls 8^, slightly convex, the last acutely carinate, with 

 oblique, close-set, microscopic stria? ; aj)erture circular ; 

 peristome simple, continued over parietal wall by a more or 

 less raised callus, very slightly expanded at point of insertion. 



Alt. 9, maj. diam. 7^ millim. 



JIab. Kemp Welsh Eiver, British New Guinea [Eniil 

 Weiske) . 



This new species is closely allied to Dalbertisi, Braz., for 

 which Pilsbry has created a new section * {Paratroc/uts), 

 which he })laces under Endodonta. In the absence of any 

 knowledge of the anatomy of the sj)ecies in question, J am 

 inclined to think that the creation of this new section was 

 unnecessary, as, according to their conchological characters, 

 both Valberttsi and Weiskei appear to me to fall naturally 

 under Canefri's section Coliolus. Judging from description 

 and figure only, Weiskei ai)pears to principally differ from 

 Dalhertisi by its narrower, more conical form and its acutely 

 carinate periphery. 



• Tryon's ' Manual of Mollusoa,' 1893, vol. viii. p. 29.5. 



