, 422 Journal of the Asiatic Society of Bengal. |N.S., XIX, 1923. | 
DESCRIPTION OF PLATE 17. 
CHINESE VIVIPARIDAE. 
The vertical line between the two views of each shell 
represents its actual height. 
Fig. |. 
a> 
2 
om 
We 
Vivipara angularis (Miiller). 
Typical shell from Canton. 
V. quadrata (Benson). 
Typical shell from Canton. 
V. quadrata f. dispiralis (Heude). 
Denuded shell from raised beach, Erh-hai, Yunnan. 
V. quadrata f. limnophila, Mabille. 
Partly denuded shell from the same locality. 
V. quadrata f. minor (Nevill). 
Large shell from Western Yunnan. 
V. margaryoides Annandale. - 
Type-specimen from raised beach, Erh-hai, Yunnan. 
Another shell from the same series. 
Lecythoconcha lecythoides (Benson). 
Lectotype from Chusan. 
L. malleata f. occidentalis, nov. 
Type specimen from Ho-Ching, W. Yunnan. 
