110 HALIOTIS. 



Group of H. iris. 



A beautiful shell, well-named iris, is the type of this group. It 

 is peculiar in having the lips continuous and united across the 

 spire end. 



H. IRIS Martyn. PL 13, figs. 65, 66. 



Shell oval, the two sides equally curved ; convex ; spire oblique, 

 short, whorls 2 ; surface pitted ; lip continuous, produced beyond 

 the body-whorl ; inside dark metallic blue and green, with yellow 

 reflections ; muscle impression distinct, roughened. 



The back is convex, angled at the row of perforations ; outside 

 pale brown or light olive-green, pitted as if by the intersection of 

 two series of low oblique folds. The spire is very short, with fewer 

 whorls than usual. Inside it is brilliantly pearly, prussian blue and 

 green predominating, but with reflections also of purple, orange 

 and a little red. The columellar plate is broad, passing into the 

 expanded continuation of the outer lip above, not truncate below ; 

 its face is flattened, and slopes inward; cavity of spire small. 

 Perforations 5 to 7 open. Length 95, width 70, convexity 25 mill. 

 Chatham Is., Auckland Is.; Auckland to Dunedin, New Zealand. 



H. iris MARTYN, Univ. Conch, ii, t. 61. REEVE, Conch. Icon., 

 f. 37. SOWERBY, Thes. Conch, v, p. 20, t. iii, f. 24, 25. WEIN- 

 KAUFF, Conchyl. Cab., p. 11, t. 4, f. 1, 2. BUTTON, Manual of 

 Moll. N. Z., p. 104, 1880. 



A beautiful species, quite distinct from all other forms. Wein- 

 kauff gives Viti Islands as a locality, and Reeve says Kangaroo 

 Island, Australia. It is known however to be an abundant New 

 Zealand species, and other localities require confirmation. 



Group of H. rugosoplicata. 



H. RUGOSOPLICATA Chemnitz. PI. 20, figs. 12, 13. 



Shell oval, quite convex, distance of apex from margin one-eighth 

 to one-ninth the length of shell ; sculpture consisting of faint spirals 

 and a close strong radiating corrugation ; perforations circular, their 

 edges elevated, 6 to 8 in number. 



Outlines oval, the right margin a little straighter; back convex, 

 not carinated at the row of holes ; thin, light yellowish-brown, red 

 on the spire, or light green flamed with red. The surface has almost 

 obsolete spiral cords, and regular, close, radiating folds ; between the 

 row of holes and the columellar margin there are no radiating folds, 



