72 HELIX-PYRRHA. 



G. PORTIA Gray. (Vol. II, p. 213.) 



G. LAMBDA Pfr. (Vol. I, p. 129.) H. igniflua of Rve. is a 

 synonym. 



G. PROPINQUA Hutton. PI. 22, figs. 55, 56, 57. 



Shell depressed, striated, narrowly umbilicated; color pale horny 

 with numerous narrow zigzag red bands, which are often broken up 

 into a series of spots. Spire convexly conoidal, apex obtuse ; whorls 

 4-5, rather flattened, the first two smooth, the rest very strongly 

 striated with oblique growth lines ; last whorl carinated, the base 

 rounded; suture impressed; umbilicus narrow; aperture oblique, 

 rotundly lunate, anteriorly subangled ; peristome thin, the colu- 

 inellar margin reflected. Greatest diameter 0'24, least O2, height 

 0-16 inch. Dentition 21-1-21. (Hutt.) 



North Island of New Zealand at Auckland and Hawks' s Bay ; 

 South Island at Weka Pass and Southland. 



Thalassia (f) propinqua HUTT., Trans. N. Z. Inst. xv, 1882, p. 

 137 (1883). T. propinqua HUTT., Trans, xvi, p. 169, t. 10, f. G, t. 

 11, f. V (dentition and jaw) ; p. 203. 



Allied to H. zelandice but less acutely keeled, more strongly 

 striated and differently colored. My figures are drawn from the 

 type. 



G. ZELANDivE Gray. (Vol. II, p. 214.) 



G. OBNUBILA Reeve. (Vol. I, p. 120.) H. sigma Pfr. MS. is a 

 synonym. 



Section PYRRHA Hutton, 1884. 



Trans. N. Z. Inst. xvi, p. 200. 



G. CRESSIDA Hutton. Vol. IX, PI. 3, figs. 17, 18, 19. 



Shell turbinate, depressed, thin, translucent, striated, umbilicus 

 covered ; fulvous-horny, spire convex ; whorls 5i, slowly increasing, 

 rounded, shining, finely irregularly striated or plaited ; suture 

 impressed ; umbilicus very narrow, covered by the peristome ; 

 aperture slightly oblique, Innately rotund ; peristome thin, regu- 

 larly arched, the columellar margins slightly thickened and reflected 

 over the umbilicus. Greatest diameter '48, least '38, height '33 inch. 

 (Hutt.) 



Wellington, N. Isl.; and Preservation Inlet, Haast River, South- 

 land and Greymoutli, S. Island, New Zealand. 



