312 O. F. von Molleiidorff— T/ie Landshells of PeraJc. [No. 4, 



Mr. J. de Morgan describes, in the paper already mentioned, two 

 species of Alyccdus from Perak, one of wliicli appears to be a remarkable 

 novelty. 



44. Altc^us jousseaumei, de Morgan, 

 de Morgan, Le Natural., vii, 1885, No, 9, p. 70. 



'' White, perforate, depressed, whorls convex, sntnre deep, last 

 whorl very ventrose and strongly contracted a little above the circular 

 aperture, sculptured by fine transverse striae ; above the contraction a 

 sutural tube, the length of which varies with the age of the shell. 

 Peristome double, reflected, presenting the form of a horseshoe, the 

 concave side of which is turned to the umbilicus. Operculum horny, 

 multispiral, circular, concave, inner side with a prominent central 

 nucleus." Diam. maj. 11 — 15 mill., alt. 6, apert. diam. 4 mill. 



So far as can be judged from this not very exhaustive description, 

 the species would appear to be related to A. umhonalis^ Bens., and physisy 

 ]3ens. It is the largest form hitherto described. 



Hab. — Limestone hills of the Kinta valley, summit of Mt. Lano. 



The other species, A. chaperi, de Morg. (1. c, p. 70), is probably 

 A. gibhosulus, Stol., or at least closely related to that species ; the meagre 

 description does not, however, permit an identification with any degree 

 of certainty. 



DIPLOMMATININJE. 



45. DiPLOMMATINA CANALICULATA, n. Sp. 



T. dextrorsa, conico-turrita, costulis acutis distantibus sculpta, corneo- 

 jiavescenSy spira elongata, regulariter conica, apice acuto ; anfr. 10 per- 

 convext, ultimus initio constrictus, penultimo '}nulto angustior, ad aperturam 

 ascendens. Apertura verticalis, angidato-subcircularis, peristoma duplex^ 

 externum late expansu^n^ rejlexiusculum^, internum sulco ah illo separatum^ 

 expansiusculum^ superne appressum. Columella hasi truncata, cum mar- 

 gine basali angulum canaliformem formans. Lamella cohcmellaris, vali- 

 diuscula fere ad marginem producta. Alt. 5, diam. 2 mill. 



Hab. — Ad Buket Pondong, leg. cl. R. Hungerford. 



This novelty is well characterized by the long regular conical spire, 

 the distant and very sharp ribs, the curious angle at the base of the 

 columella, which forms almost a canal and is distinctly continued into 

 both peristomes. The latter are prolonged round this angle into a 

 spur-like excrescence. Similar formations are observed in several Indiau 

 and Chinese species, but in none are they so well developed as in this. 



