1877.] Upper JBiirma and Yunnan. SI 



his desire that the form should be named in honour of the unfortunate 

 discoverer. 



Paludina Ciiinensis, Gray, var. ampullifoemis, Sow. 

 Faludina CMnensis, Gray, Griff. An. K. 1834 (China). 

 P. lecythis, Bens., J. A. S. B., 1836 (Sylhot). 

 P. lectjthoides^ Bens., A. & M., 1842 (Chusan). 



P. amptdliformis^ Soul., Voy. Bonite, 1852, pi. 31, fig. 25 — 27 (Cochin China). 

 F. lecythis, Bens., var. ampuUifm-mis, Eyd. and Soul., Con. Indica, pi. 77, fig. 7 (Upper 



Bui-ma). 



The types of Benson's P. lecythis are in this Museum ; they are a very 

 large, globose, and thin form of P. cldnensis ; pi. 7G, fig. 6, in the ' Con. 

 Indica' fairly represents Benson's form ; this variety has been recently 

 rediscovered in India by Major Godwin-Austen, who found it at Munipur ; 

 Benson's types of P. lecytliis were more probably found in the same locality^ 

 than in Sylhet proper. 



Found in great abundance, about 5000 ft. above the sea, at Nantin^ 

 Mungla, Momeiuy and Hotha in Yunnan ; there are two forms existing every- 

 where together which pass by insensible gradations the one into the other : 

 one is a short tumid variety like typical P. lecythis, but of stouter texture 

 and with the whorls much more distinctly angulate, appearing to me to be 

 the form called P. ampulliformis by Souleyet : theother has a more produced 

 spire, resembling that of P. lecythoides ; aj^parently both Yunnan forms can 

 be distinguished from Chinese specimens by the markedly shorter last 

 whorl, some one or two, however, show in this respect so close an a^^proach 

 to var. lecythoides that I am afraid the character cannot be relied uj)on to 

 separate P. chinensis and its var. lecythoides from var. lecythis and var. 

 ampulliformis. 



PALTJDrffA DissiMiLis, MiilL, var. dectjssattjla, Blf. 

 P. dissimilis, var. ducussatula (vel P. decussatula), Blf., P. Z. S. 1869, p. 445, (Ava). 



Differs from P. heliciformis, v. Fr. by the less rounded whorls, by the 

 more produced and not decollated spire, and by the less distinct angulation at 

 the periphery, which is distinctly banded with a white belt, obsolete in the 

 Pegu form. Both differ from typical Bengal P. dissimilis (P. praemorsa, 

 Bens.) by the considerably more developed scul23ture, more angular last whorl, 

 less rounded aperture, and less open umbilicus, and by the more uniform 

 green colouration ; the white belt is also less distinct than it is in most Bengal 

 specimens ; it is even less like the South Indian var. variata and var. ohtusa. 



Common at Ava and Bhamo. 



var. viRiDis, Ev. 

 P. viridis, Hani. MSS., Ev., Con. Icon., fig. 20 [Loc. ?]. 



A fine striking form, easily distinguishable from the preceding by the 

 more produced spire, obsolete belt, &c., exactly resembling the above figure 



