loO 



LAND AND FRESH-WATER SHELLS OF N. A. [PART IV. 



Fig. 282. 



blaiice in outline to Melania (Goniobasis) Boykiniana (nobis), but it 



is larger, has more tubercles, and a more elevated spire. Many speci- 

 mens are disposed to be plicate, and on the periphery 

 where these folds traverse the raised strise, a com- 

 pressed tubercle is caused. These are sometimes re- 

 peated 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 develop the natural history of 



Georgia. — Lea. 



Dr. Brot makes this species a synonyme of Boykiniana, hut 

 I cannot, from the material that has passed under my inspec- 

 tion, coincide in this decision, although the two are closely 

 allied, and may be the same. 



Fig. 283. I'ig. 284. 



14. G. Boykiniana, Lea. 



Melania BoijJHniana, Lea, Proc. Philos. Soc, i, p. 289, Oct., 1840. Philos. Trans, 

 viii, p. 228, t. 6, f. 59. Obs., iii. p. 6G. DeKay, Moll. N. Y., p. 100. WilEATLEY, 

 Cat. Shells U. S., p. 24. Reeve, Monog. Melania, sp. 77. Jay, Cat. Shells, 4th 

 edit., p. 273. BiNNEY', Check List, No. 37. Catlow, Conch. Nomenc, p. 185. 

 Brot, List, p. 34. 



Elimia Boykiniana, Lea, Che>tj, Man. de Conchyl., i, f. 1978. Adams, Genera, i, 

 p. 300. 



Juga Troostiana, Lea, Chentj, Man. de Conchyl., i, f. 2017. 



Description. — Shell granulate, elevated, somewhat turreted, at the 

 carina tuberculate ; sutures impressed ; aperture 

 long, ovate. 



Habitat. — Chattahoochee River, Columbus, 

 Georgia. 



Diameter, -38 ; length, -94 of an inch. 

 Observations. — This is a very distinct 

 and remarkable species. Although many 

 of the individuals differ, the prevailing 

 character is to have the whole of the 

 whorls covered with numerous granulate, 

 revolving lines, generally bearing a purple or brown line. In some 

 the tubercles of the carina assume the character of folds. — Lea. 



rig.285. 



