168 Binney on Terrestrial Mollusks. 



Length more than seven twentietlis of ww inch. I am indebted 

 to Mr. Stephen ElHott for this species, who obtained it on the coast 

 of South Carolina. It is closely allied to Bidimus monile Brug., 

 but it has no appearance of bands, which distinguish that shell. In 

 the collection of the Academy are specimens from the AVest Indies. 

 (Say.) 



SYNONYXIS AND KEFEKENCES. 



Melampus obUqiius Say, Journal Acad. Nat. Sc. I'liila. vol. ii. p. 377, (Dec. 1822); 

 Biiin. ed. p. 27. 

 Pfeiffer, Mon. Auric. Viv. p. .30. 

 Attricula obUqua DeKay, N. Y. Moll. p. 58. 

 Melampus Beck, cibsq. desc. 



Remarks. It is not now known what shell Say had in 

 view when the above description was written. No au- 

 thentic specimen is preserved, and no author has seen any 

 shell from that locality answering to the characters laid 

 down. DeKay mentions it among the extra-limital spe- 

 cies in his report, his words being nearly a repetition of 

 Say's. Pfeiffer repeats Say's words, and suggests the 

 identity of the species with Melampus cojfea. Say being 

 familiar with that shell {M. coniformis, vid. ed. Binn. 

 p. 85), it seems hardly probable he would have described 

 a variety of it. 



The question must remain undecided until we are bet- 

 ter acquainted with the species of the South Carolina 

 coast. 



MELA.IIPIS PI SILLUS Gmehn. 

 Plate LXXV. Figure 29. 



Testa imperforata, elongato-ovata, solida, nitens, laevigata, lincis micro- 

 scopicis volventibus notata ; rufa, fasciisindistinctis uiagis candidis cincta ; 

 sutura lion valde iiiipivssa ; spira olongato-conica. ape.x nigra, acuta, 

 nitens ; aulV. C-7, supcri planiusculi, ultinius obtuse aiigulatus, ad basin 

 regulariter atteiuiatus, jf testa; long, arpians ; apcrtura subverticalis, 

 supra angusta, infra rapide dilatans, testa; long. i.j aequans; perist. sim- 

 plex, acutuni, intiis callosum ct plicam obtusani iiitus positam gerens, 

 margine basali appresso etin plicaui coluuiollaroin iiitrantemascendente ; 



