436 Mr. ^\ . II. Bt'iison un sume new Lund Shells. 



weatliorcd, is ilcricii'iit in the upper whorls, and is slightly 

 damagril on the colunieUar lip ; but the eharactcrd of the aper- 

 ture and of the last whorl are too peculiar to allow of its being 

 confounded with any other sj)ecies. The superior parietal plait 

 and the upper palatal one run almost contiguously parallel for 

 some di.stance into the aperture, forming an imperfect tube which 

 opens at the top of the aperture. 



The rather varial)le sinistrorse shell (jierhaps including P. ca- 

 pensis, Kr.) which I found on the shores of Simon's and llout Bays, 

 and w hich 1 referred in a former paper to Piijxi pottebergcnsis, 

 Krauss, was found abundantly on the same Point by Mr. Layard, 

 together with Helix Menkeana, Pfr., and the true Helix Lucniia of 

 Miiller. A small variety of the latter shell, from Caledon, I was 

 at first inclined to describe as a new species. It differs in having 

 the umbilicus almost rimate, and shows a passage towards a small 

 variety of Jlclix Alexandri, Gray, found, in Namacpia Land, with 

 several varieties of H. glubulii.s. The same modification of the 

 umbilicus, in the species dwelling more to the eastward, is ob- 

 servable in a specimen of Helix Menkeana sent to me by Prof. 

 Albcrs, from Elim, as compared with Mr. Layard's specimen, 

 and with the lai-ger inflated variety which I found on the sand- 

 hills in llout Bay. Pupa Kurri, Krauss, noted by its describer 

 as a Zwellendam species, has also been forwarded from the 

 George District. 



Helix Churyhdis, nobis, n. s. 

 Testa subaperte uinbilicata, discoidca, utrinque concava, confertim 

 radiato-costulata, costulis alccriiis acutis salientibus, cornea ; an- 

 fractibus 4^ convexis, ultimo angusto, csetcros dominante, supenie 

 subangulato, subtus convexo; ajiertura anguste lunari, altiori quam 

 lata, utrinque tcstam superante ; ])eristoniate tcnui, acute, niargine 

 columellari expansiusculo, umbilico profunde perspective. 

 Diam. major ;jj, miner -4 J, axis 2\ mill. Long, apert. 3, lat. 2 mill. 

 Hab. ad Prenioiitorium Bouse Spei. 



Mr. Layard found this species rarely, in company with H. per- 

 jjlicata, nobis, at the Waterfall, near the highest blockhouse, on 

 the Table Mountain towards Rondebosch. Only three specimens 

 were taken. The specimen described is in bad order, especially 

 about the aperture, the characters of which may be open to cor- 

 rection on the receipt of a better specimen. 



Helix ToUiiii, Albers. 

 Testa obtecte subperforata, globoso-dcpres.sa, tenuiter striata, sub lente 

 striis exilissiniis spiralibus utrinque decussata, nitidula, sericea, 

 fusco-cornea, transluccnte ; spira vix elevata, apice promiuule, ob- 

 tusiusculo, sutura impressa, submarginata ; anfractibus .5 con- 

 vexiusculis, ultimo rotundate, subinflate; apertura verticali, retun- 

 dato-lunata ; poristomate recto, tenui ; margine columellari subito 



