48 



SYKES : TWO CLAUSII.I^E FROM SANGIR AND SUMBAWA. 



'Jl 



ON TWO CLAUSILI>£ FROM SANGIR AND 

 SUMBAWA. 



By E. R. SYKES, B.A., F.Z.S., 

 London. 



I have recently had placed in my hands through the kindness of 

 Lieut-Col. Godwin-Austen, two species of Clausilia, collected by 

 Mr. Doherty. The one from Sumbawa is, I believe, new, and I now 

 describe it under the name of C. recondHa. The other, which comes 

 from Sangir and the S. Celebes, is in my opinion a form of 

 C. u/olucceusls, von Marts. ; the finding of it in Sangir extends the 

 specific range from the Molucca Js. and S. Celebes 

 somewhat to the north. It is perhaps worthy of 

 remark, as bearing on faunal relations, that the 

 Sangir form is more nearly allied to the Molucca Is. 

 form than to that from the Celebes, which, as 

 Prof, von Martens has pointed out, 1 is less strongly 

 striated than the typical form from the islands which 

 give their name to the species : it may be the 

 variety majuscula, Tapparone-Canefri. 2 The Sum- 

 haw; shell, though a Pseudonenia, appears not to 

 be very nearly related to any Javan species ; the 

 deeper water which is entered on between }>ali 

 and Lombock, on passing eastward from Java, 

 probably accounts for the difference. The following 

 is the description of C. recondita, which is chiefly 

 remarkable for its single plica palatalis and very 

 short plica principalis. 



Clausilia (Pseudonenia) recondita, sp. nov. 



Testa fusiformis, gracilis tenuiuscula, cornea, nitens : spira 

 elongato-turrita ; apex subacutus, non dccollatus. A/ifr. io-ii 

 plano-convex iusculi, lente accrescenles, sutura impressa, subtil iter 

 striatuli, ultimas angustior qaam antepenultimus, \ altituainis 

 testae non ozquans. Apertura pan'a, piriformis, basi recedens y 

 peristoma continuum solution, expansum, vlx reflexum, leviter 

 iucrassatulum, albidum. Lamella superior obliqua, marginalis ; 

 inferior obliqua, spiral iter recedens, superiori approximate/. Plica 

 principalis brevis (2 millim. apfirox.), plica palatal is uuica, 



1 Von Martens in Max VVel er, Zool. Ergeln. Reise. Nietk-rlnd. Incl. 1891, Bd. ii, p. 245. 



2 All!]. MUS. (Irnux. (ii j), XX., p. 171. 



