20 SMITH : LAND SHELLS FROM NEW GUINEA. 



This species is allied to 0. brazieri and O. proti'ada of 

 Hedley. P'rom the former it appears to differ in the more 

 conical form of the spire, in the rounded base of the last volution, 

 the absence of an angle around the umbilicus, and the simple 

 peristome. It is apparently more narrowly perforate than pro- 

 tracta, has fewer whorls, although of larger dimensions, and the 

 last has at the middle a distinct thread-like keel, which is con- 

 tinued a short distance up the spire just above the suture. It is 

 not " angled at the margin " of the umbilicus. 



6. Cyclotus horridus, Hedley (PI. 11., Figs. 16-18). 



Cyclotus horridus, Hedley, Proc. Linn. Soc, N. S. Wales, 



i8gi, vol. vi., p. 100, pi. xii bis, f. 40. 

 Hab. : Milne Bay, Mita and South Shore (Hedley). 



Two specimens in the present collection, much larger than 

 the types described by Mr. Hedley, may belong to this species. 

 They are 16-17 millim. in their greatest diameter. The spiral 

 striae and the bristly periostracvun appear to be similar, excepting 

 that here and there some of the former are a little coarser than 

 the rest, one at the peripherj' forming a slight median cari- 

 nation. 



7. Truncatella quadrasi, ]\I Ollendorff. 



Trnncatella quadrasi, MoUendorff, Bericht Senckenberg. nat. 



Gesell., 1893, p. 137, pi. v., f. 10-10 b. 

 Hab. : Leyte and Sibuyan, Pliilippine Islands (Moll.). 



The specimens from Samarai, British New Guinea, agree 

 exactly with the description and figure of this species, and as 

 the distribution of the various forms belonging to the genus is 

 known to be very wide in many instances, there is no reason 

 why this well-marked form should not be found both at the 

 Philippines and New Guinea. 



8. Truncatella valida, Pfeiffer.-'- 



A slender form (T. teres) of this widely-distributed species 

 was also met with at Samarai, as well as a second variety in 

 which the riblets are developed only just below the suture. This 

 form was described by Pfeiffer under the name of T. ceylanica.f 



* Conch.-Cab., ed. 2, p. 11, pi. ii., figs. 19-21. 

 t Moil. Auricul., p. 187. 



