MOLLUSCA OF INDIA. 13 
MicrocysTINA MOERCHIANA, n. sp. (Nevill, MS.). (Plate III. 
fig. 9, x 4.) 
Locality. Kondul Island, Bay of Bengal. 
Shell subdepressly conoid, very polished ; sculpture (fig. 9a, x 50), 
very microscopic longitudinal fine striation, 832 =-01 inch; colour 
reddish brown ; spire flatly conoid; suture shallow ; whorls 5, regu- 
larly increasing ; aperture subovately lunate, subvertical ; peristome 
thin, reflected at the umbilicus, solid and quite perpendicular at 
junction with body-whorl. 
Size: major diam. 0°32 inch, alt. axis 0°15 inch. 
ra 8-2 mm., pe ders ele ica 
Animal not known. 
MicRocysTINA WARNEFORDI, n. sp. (Nevill, MS.). (Plate III. 
fie S507.) 
Microcystina warnefordi, Nevill’s Hand-list, Dec. 1878, no. 168, = 
Nanina (Microcystis), n. sp., but not named. 
Locality. Andamans. 
Shell subdepressly conoid, narrowly umbilicate, glassy ; sculpture 
(fig. 8a, x50), very fine regular microscopic longitudinal striz ; 
colour umber-brown ; spire low; suture shallow, adpressed ; whorls 
nearly 5, the last rounded on periphery ; aperture lunate; peristome 
thin, columellar margin oblique, very slightly reflected, solid and 
angulate. 
Size: major diam. 0°28 inch, alt. axis 0-08 inch. 
A 4-6 mm., 3 20) mim: 
Animal not known. 
MicrocystINA HARRIETENSIS, n. sp. (Nevill, MS.). (Plate III. 
fics i, 3<s:) 
Locality. Mount Harriet, Port Blair, Andaman Islands. 
Shell globosely conoid, narrowly umbilicated, rounded below ; 
sculpture (fig. lla, x50), fine regular longitudinal ribbing, crossed 
by rather regular lines of growth, but not decussate, 12=-01 inch; 
colour umber-brown; spire subconical, sides convex; suture im- 
pressed ; whorls 4, last well rounded; aperture rather broadly 
lunate ; peristome thin. 
Size: major diam. 0-09 inch, alt. axis 0-045 inch, 
2°3 mm., #2 2c mm: 
” 
Microcystrna cRYPTOMPHALUS, n. sp. (Nevill, MS.). (Plate ITI. 
fis, LOS Shs) 
Locality. Parisnath Hill, Hazaribagh, Lower Bengal, 4480 feet. 
Shell narrowly umbilicate, depressly conoid, flat on base ; sculp- 
ture, regular fine parallel spiral striation or grooving, 20=-01 inch ; 
colour pale brown ; spire subconical ; whorls 5, regularly increasing ; 
aperture lunate ; peristome thin, reflected and angulate at columellar 
margin. 
Size: major diam. 0-12 inch, alt. axis 0-06 inch. 
:. 3°1 mm., 7 1-5 mm, 
