252 HELIX-CHLORITIS. 



a little convex, rather rapidly increasing, sculptured with oblique, 

 delicate lines of growth; separated by a well-impressed suture ; the 

 last whorl inflated, shortly and obliquely descending in front. 

 Aperture broadly lunar, little oblique, pearl-like inside ; peristome 

 livid-rufescent, broadly expanded and reflexed, margins joined by a 

 very thin callus, the columellar margin much dilated. Alt. 25, 

 greater diam. 40, lesser 32 mill. (Smith.') 



Ro.ssel Island, Louisiade Areliipelago. 



H. (Chloritis) subcorpulentus E. A. SMITH, Annals and Maga- 

 zine of Natural History, 6th series, vol. iv, p. 201, t. 13, f. 14, Sept., 

 1889. 



In form this species is very like H. leei ; it is, however, much lar- 

 ger and differently sculptured ; it exhibits no trace of the oblique 

 rows of granules occurring in that species, the epidermis being ap- 

 parently non-pilose, (Smith.} 



H. DISCORDIALIS Ferussac. PI. 45, figs. 36, 37. 



Shell umbilicated, globose-depressed, thin, minutely granulated 

 all over, silky, diaphanous, tawny ; spire depressed, plane above ; 

 whorls 4i, rapidly increasing, turgid at the sutures, the last descend- 

 ing in front, compressed around the broadly funnel-shaped umbili- 

 cus. Aperture diagonal, lunate-oval ; peristome thin, broadly ex- 

 panded, margins approaching, columellar margin dilated. Alt. 13 J, 

 greater diam. 26, lesser 20 mill. (Pfr.) 



Port Carteret, New Ireland. 



H. discordialis FEE., Hist. t. 74, f. 1. PFR. Monogr. iii, p. 244. 

 -MARTENS, Monatsb. k. p. Akad. Wissensch. zu Berlin, 1877, p. 

 274, 1878. IT. squalus HINDS, Zool. of the Voy. of H. M. S. Sul- 

 phur, p. 55, t. 19, f. 12. REEVE, Conch. Icon. f. 414. 



H. EUSTOMA Pfeiffer. PI. 50, figs. 44, 45, 46 ; pi. 52, figs. 86, 87. 



Shell umbilicated, inflated-discoidal, thin, brown, covered with a 

 dull, lusterless, very thin epidermis, usually deciduous in places, the 

 surface underneath this epidermis is shining ; closely beset all over 

 with short hairs (or hair-scars the hairs being usually rubbed oft") 

 arranged in oblique lines. Spire plane ; whorls 4J, very convex, 

 separated by profound sutures, the last whorl inflated, descending 

 in front ; base prominently angular around the broadly funnel- 

 shaped umbilicus. Aperture slightly oblique, rounded-lunate ; lip 



