SUTEK : NEW NO^S^-JIARIN'E MOLLITSCA FEOM NEW ZEALAND. 287 



oblique, rotundly lunar ; peristome thin, sharp, extremities converging, 

 the upper lip slightly advancing, columellar lip regularly arched, 

 slightly callous and expanded ; umbilicus broad and perspective, 

 about i of the greatest diameter; base convex. Diam. 3, alt. 1"5 mm. ; 

 diam. of umbilicus 1-1 mm. 



Hob. — Riccarton Bush, near Christchurch (H. S.). Pelorus Valley, 

 Marlborough (J". McMahon). 



Type in my collection. 



It is very easy to mistake this species for E. infecta, Eeeve, if it be 

 not carefully examined. The latter is distinguished from it by the 

 following characters, which at the same time will help to complete its 

 diagnosis : — It is somewhat larger, the greater diam. being 3'5 mm., 

 the riblets are closer, about 10 per mm., the interstices are not 

 decussate, the last whorl on approaching the mouth is first a little 

 narrowed over a short distance, and then slightly widened, or inflated, 

 thus giving the shell an oval shape when seen from above ; the upper 

 margin of the peristome rapidly advancing and tapering, the outer 

 lip with a concave sinuation, the umbilicus is broader, in proportion of 

 1 : 2'5 of the greatest diameter, 1 : 2-7 in E. stibmfeda. 



3. Flammulina (Pyeeha) virescens, n.sp. PI. XY, Figs. 3-7. 



Shell (Pigs. 3-35) small, globosely depressed, perforate, faintly 

 shining, hom-coloured with a greenish hue, which is more distinct at 

 the base, thin, semi-transparent ; spire low, convex ; whorls 4^-, the 

 first three slowly, the remainder more rapidly increasing ; protoconch 

 of Ig- whorls, microscopically decussate, whorls flatly convex, some- 

 what irregularly striulate, with microscopic, narrow, distinct striae ; 

 periphery rounded, subangled in young specimens ; suture impressed ; 

 aperture transverse, oblique, broadly rotundly lunar, peristome 

 simple, extremities distant, subconvergent, united by a faint callosity ; 

 columella vertical for a short distance, reflexed above towards the 

 deep, narrow perforation, and partly covering it; base convex, more 

 shining than the upper surface. Diam. maj. 9, min. 7*5 mm. ; alt. 

 5*5 mm.; diam. of perforation 0*5 mm. 



Sab. — At the foot of Mt. Stokes, Marlborough, South Island. 

 (J. McMahon.) 



Type in my collection. 



Prom F. cressida, Hutt., it may at once be distinguished by its 

 much smaller size and different colour; from F. subincarnaia, mihi, 

 by the much fainter radiate striae, the presence of microscopic 

 decussation, the rounded periphery in the adult, etc. 



Animal vnth a well-developed caudal gland (Pig. 6). 



Jatv (Pig. 4) slightly arcuate, narrower in the middle, very thin, 

 consisting of about 45 narrow straight plaits, lying close together, 

 which are finely longitudinally striate and indent the cutting edge. 

 It agrees with the jaws of the other two known species. 



Eadula (Pig. 5) has the formula 23 : 10 : 1 : 10 : 23.^ The 

 rhachidian tooth is long and narrow ; reflected portion short, tricuspid, 

 covering about one-third of the basal plate ; the median cusp is short, 



