240 F. Stoliczka — Notes on Terrestrial Mollusca. [No. 3, 



In specimens which I examined in winter the oviduct was 

 anteriorly only slightly enlarged, but all larger specimens examined 

 during the rainy season shewed a very conspicuous orange coloured 

 swelling in that place (ov, in fig. 7, on pi. xviii). The ova 

 composing it were in an advanced state of development, and some of 

 them shewed already a spiral arrangment of dark corpuscles. 



The jaw exhibits a rather distinct but very fine concentric 

 striation, the median projection in the anterior concavity is very 

 slight, and the convex edge is partially soft, granular, not entirely 

 horny. 



The radula is large, composed of about 100, nearly straight, 

 transverse rows, each generally consisting of from 307 to 321 teeth, 

 the seven median teeth being conspicuously larger than those 

 following on either side, the formula being 150 -f- 3 — 1 — 3 + 150; 

 and the total number of teeth is somewhat above 30,000. 



The anatomy of the present species, when compared with that of 

 the last, agrees, as already stated, almost perfectly. There is a slight 

 difference in the terminal attachment of the seminal receptacle and 

 in the number of enlarged teeth, but the only essential distinction 

 lies in the absence of an amatorial sac in infula. I was at first 

 inclined to attribute the absence of that organ to immaturity, 

 but this view wa£ not supported by the examination of specimens 

 at all seasons of the year, and some which had fully developed ova. 

 The only conclusion I can arrive at is, that the presence or 

 absence of an amatorial sac cannot be considered as a character 

 of generic importance, for it would be simply dragging classification 

 into absurdity, if we would refer infula and attegia to two genera, 

 while almost every other point of organisation, the form and 

 colour of the animals and of the shells, are nearly perfectly the 

 same. 



C. infula is a common* species in the neighbourhood of Calcutta ; 

 it occurs sparingly in Western Bengal and northwards up to the 

 foot of the hills, and is also found near Poona and Balarampiir in 

 Southern India. In none of these localities do the specimens attain 

 the size of the Burmese attegia, and when compared with ordinary 



# A few years ago it was almost only seen in Orchid houses, but now it 

 appeal's to become more generally distributed. 



