198 APPENDIX. 



H. gaussoini, and has brown zones. The name of ff. Streator will 

 be given it in honor of the finder. 



EURYCAMPTA Alb. 



H. EXDEFLEXA Pilsbry. PL 3, figs. 16, 18, 20. 



Narrowly umbilicate, almost closed by the expanded lip, de- 

 pressed, rather solid, corneous-brown, generally with traces of two 

 or three spiral chestnut zones above; surface shining, finely, densely, 

 obliquely striate ; spire low, apex obtuse, the first 1-1 whorls shining ; 

 whorls 4, convex, slowly widening, the last a little dilated trans- 

 versely, strongly deflexed in front, rounded at periphery ; aperture 

 very oblique, oval ; peristome white or nearly so, quite broadly and 

 flatly expanded all around, basal margin strongly thickened within, 

 terminations converging, joined across the parietal wall by a rather 

 heavy deposit of white callous. 



Alt. 1.2, diam. maj. 20, min. 16 mill. 



Jurisdiction of Baracoa, Cuba. 



H. deflexa PFR., Zeitschr. f. Mai., 1845, p. 150 ; Kiister's Conchyl. 

 Cab., t. 60, f. 21, 22 ; Monog. Hel. Viv. i, p. 342. ARANGO, Fauna 

 Mai. Cubana, p. 78. (Not H. deflexa A. BRAUN, Verb. d. Naturf. 

 Vers. zu Maintz, 1842, p. 149 ; and SANDBERGER, Land u. Su'ss- 

 wasser Conchyl. der Vorwelt, p. 383, a Lower Miocene species of 

 Macularia.) 



This species is a Eurycampta, allied to H. supertexta, If. Poeyi, 

 etc., and should have been included in Vol. iv, p. 82. Pfeiffer 

 (Noment. Hel. Viv.) includes it in Thelidomus ; but this is an error. 

 The bands are sometimes quite distinct, sometimes faint or altogether 

 lacking. The shell is then usually obscurely obliquely streaked. 



I describe the species in this place because I had already figured 

 it on PI. 3, among the Thelidomus, under the impression that Pfeiffer 

 was correct in referring it to that group. The change of name 

 adopted above is the more necessary because H. deflexa Braun is 

 quite similar to the present species in form. 



PARTHENA ? 

 H. (PARTHENA ?) SANCT.ZELUCI,E E. A. Smith. Unfigured. 



Shell depressed, orbicular, narrowly perforate, thin, shining, 

 vinous-corneous, at the peripheral carina pale or greenish ; whorls 

 5, slowly widening, somewhat convex above, radiately strongly 

 plicate, microscopically spirally striate ; last whorl carinated a little 



