89 



nSc. communiformis. Xipixappi, WestColumbia,Mr.Cuming. 

 This shell agrees with Pallas's figure, which is copied by 

 Martini, in every respect but size. 



24. Sc. oBLiauA. (pi. xxxiii. f. 69.) Soiv. Jim. 



T. tenui, pyramidali ; anfractibus obliquis, vix separa tis j 

 varicibus numerosis, angulatis, laminatis. Colore albo. 



More slender and oblique than Sc. tenuis, with ribs less 

 angular. From Mr. Cuming's collection. 



25. Sc. obesa. (pi. xxxiii. f. 70* 7l«) Sow. Jun. 



T. ventricosa, brevi; anfractibus prominentibus, vix separ- 

 atis. rapide crescentibus,varicibus ineequahbus, sub-distantibus, 

 leevibus, reflexis, prope suturam elevatis ; non-nullis, incras- 

 satis, duplicatis : apertura oblique ovali, magna; umbilico 

 parvo. Colore inter varices pallide grfseo, margine aperturse 

 luteo. 



A very ventricose species, with rapidly increasing whorls 

 and not very regular varices, simple in form, slightly reflected. 

 The margin of the aperture has a yellow tinge. The whorls 

 do not quite touch each other — although the distance is 

 scarcely perceptible. Mr. Cuming and Mr. Metcalfe have 

 it from Australia. 



26. Sc. venosa. (pi. xxxiii. f. 72, 73.) Sow. Jun. 



T. pyramidali, leevi, acuminata, imperforata ; anfractibus 

 sub-numerosis, prominentibus, vix contiguis ; varicibus 1 2, 

 proximis, crassis, in medio valide reflexis, latis, superne angu- 

 latis, prope suturam sub-angustatis ; apertura rotundata: colore 

 inter varices pallide fulvio. 



Remarkable for the shape of the varices, which are turned 

 backward, so as to give the appearance of rounded, tumid 

 veins ; the interstices, which appear narrow, are of a delicate 

 fawn colour. From the West Indies. 



27. Sc. Lyra. (pi. xxxiii. f. 38, 39, pi. xxxiv. f. 81, 

 82.) Sow. Jun. 



T. ventricosa, acuminata ; anfractibus prominentibus 

 rapide crescentibus, prope suturam elevatis, sutura profunda 

 distinctis : varicibus tenuis, valde numerosis, obliquis ; aper- 

 tura magni, ovali ; labio interno tenui, obliquo ; umbilico 

 parvo : colore pallide fulvo, fasciis duabus fuscis, plus 

 minusve distinctis. 



A very beautiful species with ventricose whorls, distin- 

 guished by a deep suture, and numerous thin, close, regular 

 varices entering the suture obliquely. The colour is very pale 

 brown, or dull white, with two bands of deeper or jDaler brown ; 



