306 O. F. von Mollendorff— jT^e Landshells of Per ah. [No. 4, 



It is to be regretted that this apparently very interesting form has 

 not been figured. Might it not be related to Perrieria, Tapp.-Can., of 

 Borneo ? 



CLAUSILIID^. 



24. Clausilia (Pseudonenia) filicostata, Stoliczka, 



Stoliczka, J. A. S. B., xlii, pt. 2, 1873, p. 28, t. iii, f. 7, 8. 



Yar. tenuicosta, Gr. Nevill, Handl, Moll. Ind. Mus., 1878, p. 183. H. Crosse, J. de 

 Conoh., xxvii, 1879, p. 337. 



Buket Pondong (Dr. Townsend, Hungerford) . 



The few badly preserved specimens which Mr. Hungerford found 

 at Baket Pondong seem to justify Mr. Nevill's classification of the Perak 

 form as a variety of the Penang Clausilia filicostata. The variety is 

 longer, up to 24 mill., at the same time slenderer, the striation is much 

 finer so that it could hardly be called costulate, there are fine spiral lines 

 besides, 12 whorls instead of lO-j—H. It might even be separated as 

 a species, especially if there are differences in the closing apparatus, the 

 description of which is insufficient in Stoliczka's diagnosis. As I am 

 unable to compare specimens of the typical Clausilia filicostata, I must 

 leave this question undecided. 



PUPID^. 



25. Htpselostoma bensonianum, W". Blanford. 



W. Blanford, Contr. Ind. Mel., iv, 1863, p. 8. Pfeiffer, Mon. HeL, v, 1868, p. 437. 

 Conch. Ind., t. viii, f. 2. 



Of the three species of Hypselostoma hitherto described, H, hen- 

 sonianum is the only one with which the form collected by Mr. Hunger- 

 ford at Buket Pondong can be combined. Diagnosis and figure agree 

 fairly well, but the latter is not very exact, at least not detailed enough 

 for a small form, and the description might also be more complete. It is 

 besides not very likely that the same species ranges from Ava into 

 Perak, while there occurs another species at Moulmein. A comparison 

 of specimens of H. hensoniaiium with the Perak form may therefore 

 result in separating the latter as a distinct species. Unfortunately I do 

 not possess the Ava species. 



CYCLOPHORID^. 

 CYCLOTINJE. 



26. Ctclotus hungerfordianus, n. sp. 



Testa aperte umbilicata, depressa, plicis distantihus transversis sculpta, 

 in interstitiis plicarum striis transversis suhtilihus et lineis spiralihus 



