M1UAT0MA.— Plate II. 



Hab. Alabama, United States. 



This shell, received from Mr. Anthony without a name, 

 appears to me to be distinct, and I am glad to avail my- 

 self of the opportunity of dedicating it to a gentleman to 

 whom we are so largely indebted beyond all others for his 

 researches after the Melaniada of the Southern United 

 States of America. 



Species 13. (Mus. Anthony.) 



Melatoma cariniferum. Mel. couico-lurritd, aubpyra- 

 midali, olivaced, iihjro-fusco midique saturate fasciatd, 

 spird ampliter productd, anfractibus cariuis duabiis 

 grossis distanlibus cingulatis, interstitiis concavis; aper- 

 turd parvd, fissurd profunda. 



The keeled Melatoma. Shell couically turreted, sub- 

 pyramidal, olive, darkly banded throughout with black 

 brown, spire largely produced, whorls encircled round 

 the middle with two distant thick keels, concave in 

 the interstices ; aperture small, fissure deep. 



Gyrotoma carinifera, Anthony, Pro. Acad. Nat. Sci. Phi- 

 ladelphia, 1860, p. 66. 



Hab. Coosa River, Alabama, United States. 



A solid pyramidally conoid species, encircled with dingy 

 broad bands, and with remarkably boldly defined keels. 



Species 14. (Fig. a, b, Mus. Anthony.) 

 Melatoma robustum. Mel. testa subgloboso-ovald, sor- 

 dide olivaced, uigro trifasciatd, anfractibus convexis, 



lavibus, superne subcontracts ; aperturd ovald, fissurd 

 profunda. 



The robust Melatoma. Shell subglobosely ovate, 

 dingy-olive, encircled with three black bands, whorls 

 convex, smooth, rather contracted round the upper 

 part ; aperture ovate, fissure deep. 



Gyrotoma robusta, Anthony, Pro. Acad. Nat. Sci. Phila- 

 delphia, 1860, p. 67. 



Hab. Coosa River, Alabama, United States. 



Of rather simple character, chiefly characterized by a 

 contracted growth of the upper portion of the whorls, 

 which imparts a globose form to the shell. 



Species 15. (Mus. Anthony.) 



Melatoma salebrosdm. Mel. testa ovald, obesd, redd, 

 superne plicato-rugosd, olivaced, nigrescente-viridi tri- 

 fasciatd, anfractibus plano-conve.ris ; aperturd ovatd, 

 fauce purpurea tinctd, columella calloso-rejlexd. 



The rugged Melatoma. Shell ovate, stout, straight, 

 plicately rugose round the upper part, olive, encir- 

 cled with three dark green bands, whorls flatly con- 

 vex ; aperture ovate, purple-stained within, columella 

 callously reflected. 



Gyrotoma salebrosa, Anthony, Pro. Acad. Nat. Sci. Phila- 

 delphia, 1860, p. 66. 



Hab. Coosa River, Alabama, United States. 



This appears to me rather a doubtful species, its rugged 

 plicated growth may prove to be accidental. 



