74 Remarks on Certain Species of 



Helix Icevigata Fer. Hist. t. 82, f. 6, 1822 ? 

 fuliginosa Binney Bost. Jl. HI. 417 (excl. desc. syn. etfig.) 1840. 



Icevigata Chemn. ed. H. Helix No. 522. t. 84, fig. 17-19, 1846? 



" F/r. Mon. Hel. I. No. 142, , 1848. 



lucubrata Binney Terr. Moll. H. 225, t. 32, 1851. 



Icevigata Desh. in Fer. Hist. I. p. 94. 



inornata Reeve, No. 666, 1852. 



Icevigata " No. 672 ? ex parte, 1852. 



inornata Say, W. G. Biniiey's Reprint, p. 24, 1856. 



Icevigata W. G. Binney Suppl. Terr. Moll. p. 108, 1859. 



The following is Say's Description : — 



H. inornata, — Shell subglobose, pale yellowish horn color, polished > 

 whorls 5, rounded, wrinkled ; spire convex ; suture not deeply impressed ; 

 umbilicus small, profound ; aperture wide, at the junction of the labia 

 with the penultimate whorl shorter than the width of the mouth ; 

 labrum simple. 



Inhabits Pennsylvania. Greatest width less than seven-tenths of an 

 inch. 



This species has a strong resemblance to H. ligera, but in addition to 

 its superior magnitude, its aperture is proportionally wider, a character 

 which of course gives the whorls a greater breadth ; the whorls are also 

 fewer in number, and the distance between the terminations of the lips 

 is very perceptibly less than the width of the aperture, the reverse of 

 which obtains in the ligera. 



In mj Remarks, Annals of the Lyceum, Yol. YL, p. 352, I 

 expressed my belief that H. inornata Say is the same as H. 

 Icevigata Raf., and not the JI. inornata of Dr. Binney. My 

 friend Mr. W. G. Binney has since examined the subject in his 

 Supplement to the " Terrestrial Mollusks," and concludes that 

 his father's determination is correct. 



It is not surprising that the question at this date is full of 

 difficulty, considering that a few years only after Say's death 

 Dr. Binney treated fuliginosa Griff., lucubrata Say, and Icevi- 

 gata Raf., as one species, — that Mr. Phillips, Curator of the 



