26 PALUDINID^. 



var. tezpurensis. 



P. crassa, var. tezpurensis, <?. Nevill, Cat. Moll. Fuse. E., 1877, p. 35, 

 Tezpore: long. 7^, diam. 15\ mil. 



Exceedingly close to — if indeed specificallj distinct from — 

 a form sent me by Mons. Morelet from Cambodia, as P. haine- 

 siana, Lea ! 



8 Tezpur, Assam (type var.) ; coll. Dr. F. Stoliczka. 

 4 Pegu ; ex c. Dr. P. Stoliczka. 



23. Paludina siamensis. 



Vivipara siamensis, von Frauenfeld, Proc. Zool. Soc. 1865 and Ver. Zool. — 

 £ot. Gesells. Wien, 1865, Siam : long. 24, diam. 21 mil. 



1 Siam ; ex c. A. Morelet, Esq., (17, 15|). 



1 Siam ; ex Mr. Sowerby (ex c. Lombe Taylor), 



Long. 23, diam. 20 mil., and labelled "P. hainesiana." 



var. burmanica, nov. 



A very small variety ; spire short, apex obtuse, witli tbe 

 whorls even less acute and exserted, the last one larger in pro- 

 portion and more globosely swollen, with the keel round the 

 umbilicus obsolete ; aperture more contracted, that is, less 

 dilately expanded ; colouration of epidermis and the black 

 peristome exactly similar. Long. 11, diam. 10 mil. 



1 Prome, on the Irawady (<ype var.) ; coll. W. Theobald, Esq. 

 1 Tenasserim Prov. ; ex c. Colonel Godwin-Austen (coll. Mr. O. Limborg). 

 30 Yaylaymaw, Upper Burma, not quite adult ; coll. Dr. J. Anderson. 



24. Paludina hainesiana. 



Paludina Hainesiana, Lea, Free. Ac. Phil ad. VIII, 1856, Siam : long. 1, 27, 

 diam. 0, 88 inch ; ? var. = P. rattrei, Cr. and F. [ ^ frauenfeldi, Desh. 

 not Mor.']. 



1 Cambodia ; ex c. A. Morelet, Esq. (25f , 20). 



2 Siam ; ex c. A. Morelet, Esq. (26i, 20^). 



var, lamarcki. 

 Paludina Lamarckii, Deshayes, Nouv, Archiv. 3Ius. X, 1874, Cambodia. 

 1 Cambodia ; ex c. P. Bouvier, Esq. (37J, 25^). 



