Tin; AX.NALS 



AND 



MAGAZL\E OF NATL^RAL UlSTOKY. 



[SIXTH SERIES.] 

 No. 78. JUNE 1894. 



LIT. — On the Land-Shells of the Natuna Islawh. 

 By Edgar A. Smith. 



[Plate XVI.] 



The British Museum has receutly received a most interesting 

 series of land-shells collected by Mr. A. Everett at the 

 Natuna Islands, situated to the north-west of Borneo. Not 

 a single specimen from these islands has hitherto been 

 obtained for the National Collection, and only one indigenous 

 species, Everettia cinnamomea, has previously been recorded. 

 The present collection consists of thirty-one species, eighteen 

 of which ajiparently are undescribed, and the remainder are 

 known inhabitants either of Borneo or the Malay Peninsula. 

 The Natuna fauna, so far as it can be estimated from the 

 material at hand, appears to exhibit an equally close relation- 

 ship with that of either of these localities. Four species are 

 common to the Malay Peninsula and the Natunas, seven occur 

 in the latter and Borneo, and two are met with in all three 

 localities. The species occurring at Sirhassen do not, as it 

 might be expected they would, from its proximity to Borneo, 

 exhibit more of a Bornean than a Malayan facies, for of the 

 sixteen species known from Sirhassen five are met with in 

 Borneo and five in the Malay Peninsula. With regard to 

 the species from Bungarau or Great Natuna, six of the 

 twenty-six forms which occur on that island are also Malayan 

 and seven are Bornean. 



Ann. tfc Mag. N. Hist. Ser. 6. Vol. xiii, 31 



