18 



LAND AND FRESII-WATER SHELLS OF N. A. [PART II. 



Pffiffer also 



"West Indian Islands, in several of Avhicli it exists 

 refers it to tlio Sandwich Islands. 



It is readily distinguished by its shining, mahogany-colored 

 shell. It varies less than most of the Melampi. 



Fig. 19. 



Tralia cinglllata, Pfk. — Shell imperforate, fiisifornl, heavy ami 

 thick, shining, polislied, with numerous microscopic revolving lines, most 

 prominent on the last whirl ; brownish, with numerous irregu- 

 larly wide, white revolving bauds ; spire convex-conic, termi- 

 nating in an acute transparent point; suture simple; whirls 

 ten, the upper ones flattened and narrow, the last one tapering 

 towards the base, and equalling about two-thirds the length of 

 the shell ; aperture hardly oblique, very narrow, divided at its 

 base by a stout, sharp columellar fold, which ascends and 

 winds obliquely into the aperture ; peristome simple, acute, 

 armed within with from six to eight elongated laminae, not 

 quite reaching the edge of the lip, the lower one being most 

 fully developed. Length of the specimen before me 11, breadth 

 5 ; length of aperture 6 millimetres. 



Auricula cingulata, Pfeiffer in Wiegm. Arch. f. Nat. 1840, I, 251. — 



CHEMNvrz, ed. 2, Auric. 40, t. xl, f. 4-6. 

 Auricula oliva, Orbigny, Moll. Cub. I, 189, t. xii, f. 8-10. 

 Auricula stenostoma, Kuster, olira, in Inc.ds2aiFeP)E.F. Ft tes re ff 

 Melampus cinguJatus, Pfeiffer, Mon. Auric. Viv. 18 ; Brit. Mus. Cat. — 



W. G. bInney, T. M. IV, 161, pi. Ixxv, f. 12-13. 

 Tralia, H. & A. Ad. 



Th^ only American specimens of this species I have seen, were 

 collected in Florida by Mr. Bartlett. The species is also found 

 in Cuba, Jamaica, and Porto Rico. 



LErCOlVIA, Gray. 



"^oot divided inferiorly by a transverse groove. 



Shell ovate-oblong, imperforate, smooth ; spire conical ; aper- 

 ture elongate, oval ; inner lip with two plaits anteriorly ; outer 

 lip smooth internally, the margin simple, acute. 



Of the six species of this genus described, two are found in 



