The land operculate mollusca collected during the 'Skeat expedition' to the Malay peninsula in 1899-1900 / by E.R. Sykes.
- Sykes, Ernest Ruthven, 1867-1954.
- Date:
- 1903
Licence: In copyright
Credit: The land operculate mollusca collected during the 'Skeat expedition' to the Malay peninsula in 1899-1900 / by E.R. Sykes. Source: Wellcome Collection.
Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.
5/12 page 195
![The species of Lagochilus recorded from the Malay region are very puzzling and I think Dr. Moellendorff was quite right in describing as L. rollei the form that I noted (under the name of L. townsendi) from Kelantan. The nearest ally of L. kobelti appears to be L. townsendi Crosse; I have not seen an authentic specimen of that species, but have compared the form now described with the description and figures given by Crosse and with a specimen collected by Herr Grubauer, from whose collections Dr. Moellendorff has recorded L. townsendi as the only species found. The shell I now name is a trifle smaller and more elevated in proportion to the breadth, and the umbilicus is narrower. It may be noted that the reference to Crosse’s original paper in the £ Journal cle Conchyliologie ’ should be to p. 200 and not p. 208 as given by De Morgan and Dr. Moellendorff in their papers on the Perak fauna. I have named the form after Dr. Kobelt as a trifling recognition of his recent study of the Cyclophoridse. Ditropis caverns, sp. nov. (Plate XX. figs. 17-19.) Testa depresso-conoidea, late umbilicata, olivacea, tenuis, glabra; spira mediocriter elevata, apice eroso, sutura impressa; anfr. 4 (?), convexi, ultimus antice nix descendens, carinatus, carinis duabus supra peripheriam, unica ad peripheriam, et plurimis in regione umbilicali ; apertura subovalis, peristomate incrassatulo. Alt. 2'2; diam. max. P7 millim. Hob. In a cave, Biserat, Jalor. A single specimen only. Cyclophorus malayanus (Benson). Cyclostoma malayanum Benson, Ann. Xat. Hist. ser. 2, vol. x. p. 269. Hab. Gunong Inas, Perak. Recently when cataloguing (J. Malac. ix. p. 61) a collection of shells from Kelantan, I gave the names of Cyclophorus saturnus Pfr. and borneensis Mete.: both the forms then recorded have occurred in the present collection, and I have therefore again considered the identifications. Both, according to my present view, are erroneous, and the group is a very difficult one. The present species, which I regard as a form of C. malayanus, was then named C. saturnus, and the next species was called C. borneensis. Cyclophorus tuba (Sby.). Cyclostoma tuba Sowerby, Proc. Zool. Soc. 1842, p. 83. Ilab. Gunong Inas, Perak. See remarks under the last species ; probably the C. borneensis, recorded by De Morgan from Perak, also belongs to this species. Pterocyclos subalatus, sp. nov. (Plate XX. figs. 1, 2.) Testa late umbilicata, orbiculato-depressa, lineis incrementi notata, [3]](https://iiif.wellcomecollection.org/image/b2240644x_0007.jp2/full/800%2C/0/default.jpg)
