340 NEW MELANIDiE OF THE UNITED STATES. 



Eab. — Randall's Creek, near Columbus, Georgia, G. Hallenbeck. 



My cabinet and cabinets of Mr. Hallenbeck and Dr. Hartman. 

 Diam. -47, Length 1-24 inch. 



Remarks. — This is a very beautiful species, having some resemblance in outline to 

 Melania (Goniobasis) Boyhiniana ( nobis), but it is larger, has more tubercles, and a 

 more elevated spire. Many specimens are disposed to be plicate, and on the periphery 

 where these folds traverse the raised striae, a compressed tubercle is caused. These 

 are sometimes repeated obscurely by the inferior strise. Most of the specimens before 

 me are banded, but many are entirely free from bands. Usually, there are four bands, 

 rarely five, two being visible on the upper whorls. The lower band near to the base 

 of the columella is usually well defined. The aperture is about one-third the length 

 of the shell. I have great pleasure in dedicating this fine species to Mr. Hallenbeck, 

 who has done much to develope the natural history of Georgia. 



Goniobasis Canbyi. PL 38, fig. 204. 



Testa tubcrculata, plicata, inferne transverse striata, turrita, tenui, vel fusca vel dilute fusca, maculata ; 



spira turrita ; suturis irregulariter impressis ; anfractibus septenis, cariuatis, ad peripheriam com- 



presso-tuberculatis ; apertura parva, rhornboidea, intus maculata ; labro crenulato, sinuoso ; columella 



incurva et valcle contorta. 



Shell tuberculate, plicate, transversely striate below, turreted, thin, brown or 



pale brown, maculate ; spire turreted ; sutures irregularly impressed ; whorls seven, 



carinate, with compressed tubercles on the periphery ; aperture small, rhomboidal, 



spotted within ; outer lip crenulate, sinuous ; columella bent in and very much 



twisted. 



Proc. Aead. Nat. Sci., 1862, p. 271. 



Hah. — Lake Monroe, Florida, W. Canby; and Etowah and Tennessee Eivers, 

 Georgia, J. Postell. 



My cabinet and cabinets of Mr. Postell, Mr. Anthony and Dr. Hartman. 

 Diam. - 35, Length -76 inch. 



Remarks. — Several bleached specimens were collected by Mr. Canby, of Wilming- 

 ton, Delaware, from Enterprise, on Lake Monroe. Mr. Postell sent me two perfect 

 specimens from Etowah Eiver, Georgia, and a bleached one from the Tennessee 

 River. All these specimens are without variation. There are usually five revolving 

 stria? below, and two above, that round the periphery, which make compressed 

 tubercles where they are crossed. These folds are bright brown, — nearly red on their 

 left side, — and give a maculate appearance to the whole shell. These maculations 

 are visible on the inside. The compressed, sharp tubercles almost constitute 

 spines, and, on first looking at this shell, one is reminded of Melania spinulosa, 

 Lam., but it cannot be confounded with that species. In outline and in most of 

 its characters it is allied to Hallenbeekii, herein described, but it is much smaller. 



