614 MR. A. E. CRAVEN ON [NoV. 30, 



Malacca ; but in the arrangement of its markings there is hut little 

 similarity. At present we do not know the male'. 



Papilio lesches, sp. nov. 



Size and shape of P. alhinus, but with an irregular creamy-white 

 patch, deeply dentate on its outer edge, midway between the end 

 of the cell and the apex of the primaries, extending from the costa 

 to beyond the middle discocellular nervule ; beneath, this mark is 

 narrowly indicated, and extending beyond and below it is a broadish 

 band of greyish scales ; the secondaries have the white baud much 

 narrower than in P. albinus. 



Mus. nosti'. 



Several examples, all agreeing with one another. 



EXPLANATION OP PLATE LVI. 



Fig. 1. Mycalcsis melanopis, p. 610. 



2. Lamprolcnis nitida, p. (ill. 



3. Doleschallia dascon, p. 612. 



4. dasci/lns, p. 612. 



5. Pieris oriii/fion, p. 613. 



6. Fctpilio goldiei, p. 613. 



November 30th, 1880. 

 Prof. Flower, LL.D., F.R.S., President, in the Chair, 

 The following papers were read : — 



1. On a collection of Land- and Freshwater Shells from the 

 Transvaal and Orange Free State in South Africa^ with 

 Descriptions of nine new Species. By Alfred E. 

 Craven, F.Z.S., F.L.S., F.R.G.S., &c. 



[Eeceived October 8, 1880.] 

 (Plate LVII.) 



Helix (Pella) planti, Pfr. P. Z. S. 1854, p. 51; Reeve, 



Conch. Icon. pi. 189. sp. 1325. 



Plentiful at the Leydenburg goldfields. 



Helix symmetrica, sp. nov. (Plate LVII. fig. 2.) 



Shell globose, imperforate, vitreous, semitransparent, light olive- 

 green, dull above, glossy below and very glossy within the aperture, 

 faintly spirally striated, hnes of growth vei^r apparent ; spire slightly 



' Since tbe above was in type, we hare received several more specimens of 

 this species, including males. These do not differ in colour ii-om the females 

 described above. The variation described is shown by these fresh specimens to 

 be due to individual peculiarity. 



