1921] 193 



VI. THE APPLE-SNAILS OF THE MALAY PENINSULA. 



By N. Annandale, d.sc, f.a.s.b. 

 Director, Zoological Siirvcif of India. 



Mr. Bodcn Kloss has been kind enough to send me for 

 examination the shells of Ampullariidae in the collection of 

 the Federated Malay States Museums and has asked me to 

 give him some nolcs upon them for publication. This 

 I gladly do, if onlv to call attention to our ignorance of the 

 freshwater molluscs of the Malay Peninsula. De Morgan^ 

 and Moellendorf- have pubhshed lists and descriptions of 

 the Perak species, NevilP has described and annotated a 

 few Ampullariidae and Viviparidae from Penang and Perak 

 and I have done so for a few species and races of the former 

 family* from the Siamese Peninsular Provinces ; but the 

 whole of malacological literature nuist be searched for a 

 few scattered references to the species that occur in the 

 southern parts of the Peninsula. 



The collection of Malayan Ampullariidae I have 

 examined is not a large one, but it includes specimens of 

 all the species described from the Peninsula and the Archi- 

 pelago. The type-specimens of three Peninsular forms are 

 also in my hands, namely Pachi/labra stoliczkana (Nevill) 

 P. lurbinis siihampullacra (Nevill) and P. tnrhinis laciis- 

 tris, Annandale. These specimens belong to the collection 

 of the Zoological Survey of India and are preserved in the 

 Indian Museinn. 



The following forms are known from the Siamese 

 Peninsular Provinces, Penang, " Malacca " and the Feder- 

 ated Malay States ; possibly otliers may occur in Singapore, 

 Johore and other southern districts, but none, so far as I 

 know, have been lecorded.^ 



AMPULLARIIDAE OF THE MALAY PENINSULA. 



(Malay 1131110 " Kelembuai.") 

 Pachiflabra stoliczkana (Nevill) Penang ; Larut, Perak ; 



Selangor. 

 Pachylabra conica var. contractu Assam ; Upper Burma ; 



Penang ; " Malacca." 

 Pachylabra gracilis (Lea) Continental Siam ; Tenas- 



• serim ; Penang ; Perak. 

 Pachylabra perakensis (de Morgan) Renong ; Perak ; Selangor. 

 Pachylabra U)inkl€yi (Pilsbry) Pegu ; Singgora Province in 



Peninsular Siam. 

 P. turbinis snbanipuliacea (Nevill) Singgora l^rovince ; Fed- 

 derated Malay States ; 

 Penang. 

 P. turbinis lacustris Annandale TaJe Sap, Singgora Province. 



'Hull. Soc. Zool. France, X, pp. 353-428 (1885). 



'Proc. Zool. Soc. London, 1891, pp. 330-348. 



'Cat. Moll. Ind. Mus., fasc. E. (1877), and Hand List Moll. Ind. 

 Mus., II (1884), pp. 1-8. 



*Journ. Nat. Hist. Soc. Siam, IV, pp. 1-24 & 45, pis. I, II (1920). 



'Nevill (Hand List Moll. Ind. Mus., Ii; 1884, p. 5) records 

 two examples under the name of Ampullai'ia conica var. borneensis 

 (= Pachylabra borneensis) from Singapore. Traill (Journ. Ind. 

 Arch. I, 1847, p. 240) mentions an example of Ampullaria fi'om 

 Siagapore, G.B.K. 



