496 MR. E. A. SMITH ON LAND-SHELLS [May 7, 



or three of the preceding volutions. The umbilicus is very deep 

 and penetrable to the apex of the shell, but rather narrow, occupying 

 about one seventh of the smallest diameter. 



The peristome rather broadly expanded and white, with the 

 exception of the columellar and basal margins, which are stained 

 with a dirty pinkish colour. Over the umbilicus it is broadly ex- 

 panded, reflexed, and joined to the upper margin by a thin callosity. 

 This species is quite distinct from H. myomphala, Martens, and, al- 



Fig. 1. 



Helix {Camena) lewixii. 



though agreeing in the style of coloration, differs in form and the 

 umbilicus. 



The single example in the British Museum was presented by Mr. 

 George Lewis. 



Helix (Camena) congenita. 



Testa suborbicularis ; spira breviter conica, subaperte umbilicata, 

 tenuiuscula, pallide straminea, zona lata interruptairregularifusca, 

 vel strigis latis fuscis infra medium anfr. ultimi ornata et hie 

 illic supra strigis obliquis paucis indistinctis notata, interdum ad 

 peripheriam zona angusta fusca cincta, et umbilico aliquando fusco 

 tincto ; anfractus 5|-6, convexiusculi, lineis incrementi elevatis, 

 filiformibus, obliquis, flexuosis et striis minutissimis spiralibus 

 inter lineas elevatas scidpti, ultimus angustiusculus, antice prope 

 labrum breviter subitoque descendens ; apertura subhorizontalis, 

 intus livida, fusco tincta ; peristoma tenue, livido-fusco et albo 

 diverse pictum, undique reflexum et expansum. 

 Diam. max. 30 mill., min. 25, alt. 19; apert. 16^ long., 14 lat. 

 Hab. Japan. 



This species partakes in a great measure of the form of H. congener, 

 recently described by me in these ' Proceedings ' (1878, p. 105). 

 The spire, however, is a little more elevated, the last whorl a trifle 

 less robust, and the aperture narrower. 



The sculpture of this species is much coarser, the lines of growth 

 being developed into thread-like line, and the spiral striae invisible 

 to the naked eye, and more conspicuous between than upon the 



