COCHLOSTYLA-CORASIA. 113 



steeply obliquely descending, straight, forming an angle at its junc- 

 tion with the basal margin. 



Alt. 14$, greater diam. 25}, lesser 20$ mill. 



Solomon Is. 



This form is smaller and more elevated than C. tricolor, the col- 

 umella is very much slenderer, much less thickened, and mostly 

 white. The structure of the columella is so different that I am 

 inclined to believe the shell specifically distinct. The young have 

 no brown markings save a small columellar spot. 



(2) GROUP OF C. EXTENSA. 



Part of the following species have been included by authors in 

 A Ibftrsia ; but their characters seem more in accord with Corasia than 

 with the other group. Distribution, Moluccas and New Guinea. 



C. CONFORMIS Ferussac. PI. 19, figs. 4, 5, 3. 



Shell imperforate, globose-depressed, carinated, thin, obliquely 

 closely striated, diaphanous, whitish, covered with a pale brownish 

 epidermis ; spire little elevated, apex very obtuse ; suture impressed ; 

 whorls 3$, rapidly increasing, slightly convex, the last large, not 

 descending, convex beneath. Columella subvertical, compressed, 

 subexcavated ; aperture ample, oblique, lunar-subrotund, having a 

 pearly luster inside ; peristome simple, shortly reflexed. 



Alt. 20, greater diam. 34, lesser 28 mill. (P/r.) 



New Guinea. 



H. conformis FER., Prodr., p. 33 ; Histoire, t. 25a, f. 10. FER. in 

 QUOY & GAIMARD, (Freycinet) Voy. autour du Monde, PUranie et 

 la Physicienne, Zool., p. 467; Atlas, t. 67, f. 4, 5. WOOD, Index 

 Test., p. 22, t. 7, f. 37. PFR., Conchyl. Cab., p. 42, t. 72, f. 1-3 ; 

 Monogr. i, p. 293 ; iii, p. 203 ; vii, p. 355 ; Zeitschr. f. Mai. 1849, p. 

 76. RVE., Conch. Icon., f. 497. MARTENS, Ostas. Landsch., p. 

 393. Corasia conformis WALLACE, P. Z. S. 1865, p. 412. H. 

 (Corasia') conformis ALB., Die HeL, p. 111. TAPPARONE CANEFRI, 

 Ann. Mus. Civ. Genov. xix, p. 158, t. 8, f. 1, 8, 15 (Anatomy.) 



C. LEUCOPHTHALMA Pfeiffer. PI. 26, figs. 16, 17. 



Imperforate, subconoid-depressed, carinated, thin, obliquely 

 striated and under a lens most delicately granulated ; spire white, 

 shortly conoid-elevated, apex obtuse ; suture little impressed, indis- 

 tinctly and delicately white-edged. Whorls nearly 4, little con vox, 

 rapidly increasing, the last not descending, subacutely carinated, 



