60 A Visit to Damma Island : 



The species of Neritina^ Septat'ia, and CassiduJa also belong 

 to forms which have a ^reat range, as might be expected, 

 for the species of these genera, in many instances, are notorious 

 for their wide distribution. 



In comparing the terrestrial fauna of Damma Island, we 

 naturally seek a comparison with that of the most adjacent 

 localities. The islands of Timor and Tiraor-Laut are the 

 largest tracts of land in the vicinity, and Damma lies about 

 midway between them, but a little more northward. The 

 terrestrial moUusca of both Timor and Timor-Laut are more 

 or less perfectly known, and there certainly is a close resem- 

 blance between the shells of those islands, especially Timor- 

 Laut, and those occurring at Damma. All the genera found 

 by Mr. Walker at the latter locality are represented on 

 Timor-Laut with one exception — the Macrochlamys, and the 

 Lumprocystis mentioned by Dr. 0. von MoUendortf* may be 

 considered its equivalent. In one instance the species are 

 extremely closely related, namely, Eulota suhcornea with 

 E. hemisphcerica, and in the case of Corasia and Leptopoma 

 the same species occur in both localities. 



1. Macrochlamys pseudosuccinea. 



Testa minute perforata, conoideo-depressa, nitida, semipelliicida, 

 flavo-cornea, lineis increnienti tenuissimis striata ; spira brevis, 

 conoidalis, ad apicem obtusiuscula ; anfractus 5, convexiusculi, 

 infra suturani concave margiiiati, ultimus in medio acute rotun- 

 datus, scd baud angulatus, vix desceudens ; aj^ertura oblique 

 lunata ; peristoma teiiue, margine columellari leviter incrassato, 

 superne dilatato et reflexo, iimbiHcum semiobtegente. 



Diam. maj. \'2 millim., miu. lOj, alt. 8 ; apertura 6 lata, 5 alta. 



Four specimens of this species were collected by Mr. Walker. 

 The largest, the measurements of which are given above, has 

 half a whorl more than the rest and is probably adult. 



In the younger shells the columella is more upright than 

 in the more mature shell, and forms a more or less distinct 

 angle with the basal margin of the aperture. 



M. succinea, Pfr., from the Philippines, recalls the general 

 appearance of this species. It is, however, smaller, and yet 

 has more numerous whorls. 



2. Nanina [Xesta] dammaensis. 



forata, depresse conoidea, in medio c 

 am linea rufa angusta supra carinc 



* Nachrichtsblatt deutsch. malak. Gesell. 1892, pp. 81-102. 



Testa minute perforata, depresse conoidea, in medio carinata, fusco- 

 coruea, interdum linea rufa angusta supra carinam pallidam et 



