HELIX-CHLOKITIS. 261 



irregular sulci ; last whorl not descending in front, subcompressed 

 around the perforating, deep umbilicus; aperture a little oblique, 

 rounded-lunar, throat livid ; peristome livid-brown, simple, all 

 around expanded and subreflexed, the margins a little converging 

 and joined by a very thin callus ; upper and right margins regularly 

 incurved, columellar subthickened, broadly reflexed. 

 Alt. 35, greater diam. 52, lesser 42 mill. (T. 0.) 



Helix (Sulcobasis) Beatricis T. C., Ann. Mus. Civ. Genov. xix, p. 

 163, t. 4, f. 14, and anatomy, t. 8, f. 16. 



Distinguished from H. sulcosa by its far greater dimensions, more 

 globose form and elevated spire, more convex whorls, more rotund 

 form and larger aperture, smaller umbilicus and brownish-chestnut 

 color. 



H. REHSEI Martens. PI. 36, fig. 20. 



Shell large, globose-depressed, narrowly umbilicated, solid, dark 

 chestnut, unicolored ; whorls 4?, the earlier having microscopic 

 hair-scars in oblique series, the last encircled at and below the mid- 

 dle by numerous, scarcely noticeable, shallow furrows ; lip bluish, 

 thick, broadly reflexed, basal margin sinuous. 



The spire is low-conical, obtuse ; last whorl slightly descending 

 in front ; umbilicus deeply penetrating but rapidly becoming nar- 

 row. Aperture livid-bluish inside; peristome thick, broadly re- 

 flexed all around, its face convex, bluish, brown-edged ; its termin- 

 ations remote ; columellar margin dilated, impinging upon the um- 

 bilicus. 



Alt. 35, greater diam. 46, lesser 36 mill. 



Alt. 30, greater diam. 43, lesser 34 mill. 



Inland from Port Moresby, at the foot of the Astrolabe Mts. 



Helix (Xanthomeloii) JRehsei v. MARTENS, Jahrb. D. Mai. Ges. 

 1883, p. 82. SMITH, Ann. Mag. N. H. 5th Ser., xix, p. 418, t. 15, 

 fig. 19. H. (Camcena) rehsei, Mart. TAPPARONE CANEFRI, Ann. 

 Mus. Civ. Genov. 1877, p. 144. H. (Sphcerospira) Gerrardi E. A. 

 SMITH, Ann. Mag. N. H. 5th Ser., xi, p. 192, 1883 (preoc. by 

 Mackay). TAPPARONE CANEFRI, Ann. Mus. Civ. Genov. xix, p. 

 165. BRAZIER, Proc. Linn. Soc. N. S. Wales, ix, p. 185, 1884 (by 

 typog. error " Genardi"). H. (Sulcobasis) Gerrardi var. obtecta, 

 REiNHARDT,Sitzungsberichte der Ges. Naturforsch. Freunde zu Ber- 

 lin, no. 4, 1886, pp. 58, 59. 



