314 0. F. von Mollendorff— TAe Landshells of Perak. [No. -i, 



PUPININJE. 



52. PupiNA AETATA, Bens. 



Buket Pondong {Dr. Townscnd, B. Rungerford). Known from 

 Ava, Burma. 



63. PupiNA ARULA, Bens. 



Bnket Pondong (Townsend and Hungerford)^ otherwise known from 

 Burma. 



54. Megalomastoma (Coptochilus) sectilabrum, Gould. 



Perak (Dr. Townsend) , hsbvut (Ind. Mus.). Described from Tavoj, 

 Tenasserim, and found also on Penang. 



55. Htboctstis elephas, de Morgan, 

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



Testa anguste umhilicata, 'pupince-formis, solidissima, sublcBvigataf 

 in anfractu ultimo distinctius rugoso-striata, rufo-carnea vel aurantiaca, 

 sjjira irregularis ovata, apice conoideo-obtuso ; sutura impressa, marginata 

 albescens ; anfr. 6 convexiusculi, penulthnus multo longior, supra aper- 

 turam planatus, dorso injlatus, ultimus angustior valde descendens, ante 

 aperturam paullulum ascendens. Apertura verticalis^ angulato-circularis, 

 intus aurantiaca, peristoma 'tnultiplicatum crassissimum, aurantiacum, 

 subtus protractum, margine externo ad angulum insertionis sursum pro- 

 ducto. Operculum normale, intus castaneo-callosum, anfr. 2^ — 3, extus 

 coyivexiusculuin, albidum, anfr. 7, "tnarginibus lamellatiin elevatis. Axis 

 47, diam. anfr. penult. 23, apertures diam. intus 15|, c. perist. 19|-. 

 Peristoma usque ad 8 mill, crassum. 



Hab. — Per totam vallem fluminia Perak (/. de Morgan), Larut 

 (Ind. Mus.). 



The small collection from Larut which I received for inspection in 

 1885, contained this magnificent species, and I had determined to name 

 and to describe it when I saw the notice of de Morgan's paper containing 

 two species of Hijbocystis. Presuming that one of these might be the 

 Larut form, I delayed the publication until I had received the paper 

 itself. Although the author's description is again insufficient, still I am 

 convinced that his H. elephas from Perak is the same as the one from 

 Larut. He gives even greater dimensions : long. 50 — 57, diam. 24 — 27, 

 diam. apert. 17 — 20 mill. 



If I am tolerably certain of this identification, I am not quite sure that 

 the shell is really a novelty. There are three species of Hijbocystis known, 

 H. gravida, Bens., from Burma (Moulmein), moit/io^^, Pfr., f rom Cambodja, 



