HELIX-EUHADRA. 115 



*** 



The following are shells agreeing with the group of H. peliomphala 

 in the fine spiral sculpture and rather light texture. They are 

 brown in color ; the umbilicus is moderately open ; the periphery is 

 prominently keeled. 



H. SWINHOEI Pfeiffer. PI. 20, figs. 40, 41 ; pi. 30, fig. 8. 



Shell moderately umbilicated, turbinate-depressed, rather solid, 

 obliquely and rather coarsely striate and sculptured with very close 

 fine spiral strise, which give the surface a silky luster; reddish- 

 brown finely and obscurely marbled with lighter ; spire low-turbin- 

 ate, rather obtuse ; whorls nearly 5i, the first If convex, polished, 

 forming the nucleus ; the several following ones nearly plane, the 

 last whorl slightly descending in front, a little convex above, en- 

 circled by a prominent keel in the middle, inflated beneath. Aper- 

 ture diagonal, rounded-lunar, bluish-pearly inside ; peristome fleshy- 

 brown, margins converging, joined by a thin callus, the upper mar- 

 gin narrowly expanded, basal somewhat reflexed, dilated at the in- 

 sertion. Alt. 27-30, greater diam. 50-58, lesser 43-48 mill. 



Formosa. 



H. swinhoei PFR., P. Z. S. 1865, p. 829, t. 46, f. 6 ; Mai. Blatter 

 xiii, p. 41, 1866 ; Monographia v, p. 338. DOHRN in Conchyl. Cab., 

 Helix, p. 581, t. 171, f. 6, 1. 



Pfeiffer mentions a variety which is smaller, fulvous, the peris- 

 tome pale rose, aperture white inside ; diam. maj. 46, miu. 39, alt. 

 25 mill. 



The figures on plate 20 are very characteristic. The spiral sculpt- 

 ure is visible on close inspection without a lens. Excessively close, 

 crowded spiral lines cover the whole surface, except the apex and 

 inside of the umbilicus. 



H. CASPARI Mollendorff. PI. 25, figs. 92, 93. 



Shell openly umbilicated, depressed-globose-conoid, solid, with 

 curved radiating coarse striae, shining, dark chestnut-brown, with a 

 narrow lighter band at the periphery, which is distinctly angular, 

 almost carinated. Whorls 6, but slightly convex, the last deflexed 

 a short distance in front. Aperture diagonal, lunate-elliptical, 

 violet-brown inside, the peristome rather expanded, somewhat re- 

 flexed, a little thickened, the margins joined by a very thin callus, 



