MOLLUSCA OF INDIA. 125 



identical. The animal is dirty white, marked with longitudinal 

 grey bands ; it is very slimy, and makes a peculiar squeaking noise, 

 like a beetle, when molested. It is oviparous from May to August. 

 The eggs are 8 mm. long and 4 mm. in width ; they are oval, 

 pointed at the ends, and carinated longitudinally ; they are pure 

 white in colour and quite soft (uncalcified). 

 " Habitat among decaying vegetation. 



" Young animals are of a brick-red colour, visible through their 

 transparent shells." 



The shell is well figured on pi. xxv. fig. 1 of the ' Conchologia 

 Indica ' ; it is therefore unnecessary for me to give another. 



From the above district in Ceylon Mr. CoUett sent me the 

 specimen here described. 



Animal (Plate XCVI. figs. 1 & 2). Grey with a pinkish tinge, 

 darkest on the extremity of the foot in one specimen. Very little 

 can be said of value as regards the coloration of specimens preserved 

 in formalin ; and although it does not contract the animals nearly 

 so much as alcohol, it leaves them in a very brittle condition, and 

 far greater care must be taken in handling them. The right shell- 

 lobe (fig. 2) is represented by a very small flap, situated near the 

 respiratory aperture ; this flap is an expansion on the dividing line of 

 the dorsal lobe and narrows backward towards the posterior margin 

 of the mantle- zone, which, on the body-whorl side, and viewed from 

 the inside (that is, the surface next the shell), is seen to form a dis- 

 tinct band with an equal breadth of 2| mm. contracted. Compare 

 this also with the right shell-lobe of Ratnadvijjia (Plate LXXXV.) 

 and MJfjiria ligidata (Plate XCVIII. fig. 1 a). The left shell-lobe 

 is also a narrow fillet overlapping the peristome, 2 mm. broad, but 

 it has no tongue-like process on the left margin. The right dorsal 

 lobe is triangular and ample. The left dorsal lobe is in two distinct 

 parts, the anterior being the largest and it distinctly overlaps the 

 smaller narrower posterior lobe ; in this respect it differs from typical 

 N. solata and other species of the genus, where no division of this 

 lobe is found, and yet it is not division of the same kind as is seen 

 in Ai'iophanta, &c., showing differentiation as far as this character is 

 concerned. These lobes are all darker than the foot of the animal. 

 The sole of the foot is similar to that of R. IrracUans, it has not the 

 very distinct division as seen in MacrocMamyis^ &c. ; the segmental 

 lines on the pallial margin extend for some distance towards the 

 central area, but the dividing line of the two is very obscure. There 

 is a distinct tendency to contract on the central line, and the surface 

 under the lens is distinctly and closely striate longitudinally (^vide 

 Plate LXXXV. fig. 3). The pallial line above the broad margin 

 is ill-defined ; irregular small tubercles take the place of those of 

 the usual oblong form. The mucous gland (figs. 3 & 4) is large 

 and extends to the sole of the foot. It is rounded above, with no 

 overhanging lobe. 



The retractor muscles of the eye-tentacle and the amatorial organ 

 have their attachment very close together. The salivary gland is 



