HELIX-PHENACOHELIX, SUTERIA. 69 



arcuated. Columellar margin very short, but little reflected, 

 slightly thickened. Umbilicus very narrow, but open. (Suter.~) 



Alt. 2'5, diam. 4'5 mill. 



Foot of Sealy Range, Hooker Valley, South Island, N. Z. ; under 

 stones. 



Ptyra godeti SUT., Trans. N. Z. Inst. xxiii, p. 90, t. 17, f. 8, a, b 

 (shell) ; O, P (jaw and dentition). 



Stands nearest to Psyra tullia Gray, but is easily distinguished by 

 the absence of color-markings, the stronger more distant ribs and 

 the open umbilicus. 



Section PHENACOHELIX Suter, 1891. 

 G. IOTA Pfr. (Vol. II, p. 212.) 

 G. GRANUM Pfr. (Vol. II, p. 212.) 



G. CHORDATA Pfr. 



Section SUTERIA Pilsbry. 



Suteria PILS., The Nautilus, Sept. 5, 1892, p. 56, type H. ide 

 Gray. Charopa HUTTON, olim, non Albers. Patulopsis SUTER, 

 Trans. N. Z. Inst. xxiv, p. 270, 1891, type H. ida Gray ; not Patu- 

 lopsis Strebel, 1879, a Mexican group of Zonitidce. 



G. IDE Gray. (Vol. II, p. 210.) 

 G. ZICZAC Gould. (Vol. II, p. 210.) 



This species, described in 1846, is evidently distinct from H. ide 

 Gray. The specimens were found by Dr. Pickering, of the U. S. 

 Expl. Exped., in a crater near Taiairni, N. Z. 



Section THERASIA Hutton, 1884. 



A. Sabperf orate species. 

 G. CELINDE Gray. (Manual II, p. 211.) 

 G. VALERIA Hutton. PI. 22, figs. 46, 47, 48. 



Shell globose-conoidal, depressed, finely ribbed, subperforate ; 

 color pale horny, irregularly marked with rufous. Spire conoidal, 

 obtuse ; periphery obtusely angled ; suture scarcely impressed ; 

 whorls 4-5, rather flattened, irregularly finely ribbed, both above 

 and below, ribs about 20-25 in the tenth of an inch ; umbilicus very 

 narrow, covered ; aperture oblique, angularly lunate ; peristome 



