234 F. Stoliczka — Notes on Terrestrial Mollusca. TNo. 3 



tapering, obtusely truncate at the end ; tail-gland with slightly- 

 thickened edges and a small hook-like appendage above. Sole of 

 foot with two longitudinal, not very distinct, furrows ; its middle 

 P^rt is a little broader than the lateral parts. 



The outer mantle edge is slightly thickened. The left shell- 

 lobe (/«/, in fig. 2) has below the angular periphery a linguate 

 process, reflected over the basal part of the peristome, and ends 

 with another shorter appendage near the shell retractor ; the right 

 shell lobe (rsl.) has a linguate process at the posterior angle of the 

 mouth, and another broader one covering the columellar lip. The 

 left dorsal lobe (Idl.) consists of a small linguate process next to the 

 pulmonary opening and extends after a short interruption as an in- 

 distinct rim (in young specimens obsolete) along the inner side of 

 the mantle. The right dorsal lobe (rdl.) is considerably produced 

 over the neck and recedes rapidly, barely reaching to the shell re. 

 tractor. 



The pulmonary cavity is spacious, with dark pigment arranged in 

 some irregular transverse bands. The pigment is supplied from a 

 long, blackish mass spread superficially over a white, albuminous 

 gland (pg, in fig. 1), accompanying the dull yellowish kidney, 

 next to which on the left side follows the heart (h). The mouth is 

 large, fleshy ; the salivary glands also large, on long strings and 

 in the original position situated at the lower anterior end of the 

 stomach ; the latter is about 1£ volutions long, without any ccecal 

 appendages ; the intestines form only one twist and are surround- 

 ed by two lobes of the liver. A narrow albuminous gland (ag) 

 accompanies the rectum. 



The liver consists of several lobes : one is situated next to the 

 hermaphrodite gland, while two others envelope the intestines ; 

 a fourth larger lobe begins at the lower end of the kidney and 

 covers nearly the whole of the lower side of the stomach; the 

 last 2£ volutions are also occupied by the liver. 



The nervous system with its numerous branches does not differ 

 in any essential particular from that of other Zonitid2E. 



The genital organs occupy the right side of the dorsal cavity. 

 In full grown specimens they are very complicated. The arrow 

 sac (ag) is very thick, twisted, angularly bent near the anterior 



