112 PROCEEDINGS OF THE MALACOLOQICAL SOCIETY. 



darod to add one more to tlie species — already difficult to distinguish — 

 of til is group. 



We were able to compare two typical specimens of this species of 

 Heude's, received from the Reverend Pere himself. They measure alt. 

 17*6-18-3 mm.; diam. max. 3*6-4 mm. In his description, Heude 

 gives the dimensions of only one shell, viz.: alt. 21 mm.; diam. 

 max. 4 mm. 



V. Sub-sect. Hemiphjedusa, Bttg. 



21. Clausilia Moellendorffiana, Heude, var. edentttla, n. 

 Differt a typo plica principali intus magis ultra lunellam producta ; 



lamella inferiore basi nodulo non instructa, funis instar torta, denticulo 

 infra sinulum posito nullo. Testa vcntriosiore. 



Hdb. — Hangchowfu (province Chekiang), 3 specimens, of 113-12 

 whorls ; alt. 26"5-27*3 mm.; diam. max. 7 mm. 



We were able to compare a specimen of the type form received from 

 Heude of alt. 34"5 mm. ; diam. max. 8 mm. 



22. Clausilia Laurentiana, Molldff. 



Von MollendorfP, Jahrb. d. d. Mai. Gcs. 1886, p. 203, t. vi. fig. 10. 

 One specimen from Ichang, province Hupeh (Capt. Yankowsky). 

 Alt. 276 mm. ; diam. max. 8"5 mm. The locality is open to doubt. 



23. Clausilia Fargesiana, Heude, 

 Heude, I.e. p. 119, t. xxxi. fig. 3. 



An original specimen from Pere Heude shows this species to be 

 closely related to C. Laurentiana, Molldff. It is, however, more 

 cylindrical in shape, the plaits on the neck are coarser, and they are 

 not crossed by a transverse furrow. The aperture is less protracted, 

 more vertical, larger, and ovoid ; the lamella superior is vertical, 

 not inclined to the left, much lower inside ; the lamella inferior is 

 lower and not produced on the margin. Plaits on the peristome are 

 entirely wanting. Alt. 32 mm. ; diam. max. 9*2 mm. 



24. Clausilia decurtata, Heude. 

 Heude, I.e. p. 119, t. xxxi. fig. 5. 



Another species closely related to C. Laurentiana, Molldff. It is 

 easily recognised by the plica principalis running out on the 

 peristome, thus forming the uppermost of the many plaits. The 

 lamella superior is not hook-shaped, nor does it incline to the left 

 as in C. Laurentiana ; the lamella inferior descends very low in front, 

 and on the interlamellar space there are three to four plaits. The 

 plaits on the peristome are narrower, more compressed, and more 

 distinct than in C. Laurentiana. We were able to compare three 

 original specimens. Their dimensions are : Alt. 23"5-28-25 mm. ; 

 diam. max. 6-6-8"2 mm. 



25. Clausilia lu:n^atica, Heude. 



Heude, Journ. de Conch. 1888, p. 235, and Moll. terr. p. 154, t. xxxiv, 

 figs. 4, 4«. 



This species, the nearest ally of all to C. LMurentiana, has the 

 last whorl flattened, the basal ridge more developed and continued to 

 the peristome, the umbilical area narrower, the lamella inferior placed 

 both lower and further from the lamella superior. The most 



