KACHISELLL'S. 279 



wliereas the descriptions by Anton and Eeeve agree with bis 

 specimens from Mozambique and Ceylon in liaving a black or 

 bluckit^h apex. The specimens from Querimba Island, he states, 

 are somewhat larger — 15 mill, long and 7 broad — and are more 

 whitish than those from Tette. The shells recorded in 1860 by 

 von Martens were obtained from Herr W. Brauns, an oil manu- 

 facturer, who picked them out, together with many other species, 

 from Sesamum seed received in large quantities from Zanzibar. 

 In addition to normal specimens, he observed one form, very 

 conspicuous on account of the width and size of the aperture, the 

 measui'ements being: length 22'5 mm., maj. diam. 8, length of 

 aperture 7, but which otherwise agreed with punctatun, more 

 especially as regards coloration and markings. Amongst numerous 

 specimens of this species he invariably found but a single distinct 

 band, but frequently in addition some ill-defined band-like shading 

 at the base. Again, in dealing with R. ferussacl*,\\e alludes to 

 its close resemblance to E. African and Indian specimens of 

 It. puHctatus, stating that the latter is somewhat more slender, but 

 differs especially in the last whorl and the aperture, the colouring 

 and marking being similar, although a little darker. 



With regard to banding, li. inmctatiis is certainly the most 

 constant, as among the numerous specimens which have passed 

 through my hands, I have not in a single instance observed the 

 one infra-peripheral band missing, but occasionally it is interrupted 

 by the transverse streaks. Now and again there may be an indi- 

 cation of a second band below it, as in some shells from Pulney 

 received by Mr. Leman from the lute Robert Cairns' collection ; 

 the same may be observed in some shells obtained by the Stanley 

 Grardiner Expedition in S. Mahlos Atoll, Maldive Archipelago. 

 Many specimens from Travancore are strongly marked with 

 transverse fuscous streaks. 8ome shells received by the British 

 Museum from Hutton, from the plains of India, are characterized 

 by a dark zone on the columella. In size R. ])unctatus varies 

 considerably : Hutton's shells measuring 13 x 6 mm., some 

 Bombay specimens received from A. A. West 14*5 x 5*5 mm., 

 others from Bundelkhund in the Cuming collection reaching 

 15x6 mm., and shells from JMadras, sent by J. E. Henderson, 

 16x6 mm., while thi'ee specimens collected by Pirrie in the 

 Koondah Mountains attain 21 x9 mm. The latter were labelled 

 B.ferussaci by Pfeiffer. Einally, it appears worth while to place 

 on record three specimens collected in Benguella by Dr. Ansorge, 

 and acquired by the British Museum. These can only be distin- 

 guished from typical imnctata by the larger size — the largest 

 measuring 23 X 11"5 mm. — and by the more distinctly angulated 

 umbilicus. They are creamy white with a pale fuscous infra- 

 peripheral band and minute spots. 



* Jahrb. Dents. Malak. Ges. ix, 1882, p. 247. 



