Flammulina.'] GASTROPODA. 67." 



Diameter Maj., 9-5 mm. ; min., 7 mm. : height, 3-5 mm. (type). 



Dentition. Suter, T.N.Z.I., xxiv, 288, pi. 20, f. 8, 9 (Amphidoxa 

 compressivoluta). 



Jaw almost straight, membranous, with very line vertical striae. 



Radula with the formula 100 x 32 + 1 + 32 ; laterals about 6. 

 Central tooth tricuspid ; laterals similar, but the entocone larger 

 than the ectocone ; marginals with 3 to 4 denticles, the second on 

 the inner side strongest. 



Type in the British Museum. 



Hab. North Island : Heretaunga (Brooks) ; Shannon (R. Mur- 

 doch) ; Petane, near Napier ; Forty-mile Bush (H. S.) ; near Wel- 

 lington (H. S.). 



Remarks. Hutton mentions the locality Greymouth, but I think 

 the specimens sent to him by R. Helms were those I gave to the latter, 

 coming from the Forty-mile Bush. 



4. Flammulina cornea, Hutton, 1883. Plate 9, fig. 9, a, b. 



Amphidoxa cornea, Hutt., T.N.Z.I., xv, 1882 (1883), 136; T.N.Z.I., xvi . 

 198. Oerontia (Calymna) cornea, Hutt: Pilsbry, Man. Conch. (2), viii, 

 75, pi. 22, f. 64-66. Flammulina cornea, Hutt. : Hedley and Suter, 

 P.L.S. N.S.W. (2), vii, 643 ; Suter, J. de Conch., xli, 240. 



Shell small, depressed, imperforate, striated, translucent. Sculpture 

 formed by oblique arcuate and retractive growth-lines only ; there 

 are no spirals. Colour pale-horny. Epidermis thin, polished. Spire 

 low, broadly convex. Protoconch of 1 convex whorl, smooth. Whorls 

 2| to 3, rapidly increasing, rounded, periphery convex ; base some- 

 what impressed in the middle. Suture impressed. Aperture oblique, 

 ovately lunate. Peristome thin, regularly arched, straight. Columella 

 short, slightly oblique, and arcuate. Inner lip a little callous, shortly 

 reflexed above, and extending as a thin glaze over the convex parietal 

 wall. 



Diameter Maj., 6-25 mm. ; min., 5mm. : height, 4-5 mm. 



Radula with the formula 17+1 + 17 ; laterals 8. 



Type in the Canterbury Museum, Christchurch. 



Hab. Auckland (Cheeseman, Gillies). 



Remarks. The species is very nearly allied to the foregoing, but 

 the whorls are more convex, the suture is not false-margined and 

 crenulated, and the shell is smaller ; there is also no trace of spiral 

 striation. 



5. Flammulina costulata, Hutton, 1883. Plate 26, fig. 15, a, b. 



Amphidoxa costulata, Hutt., T.N.Z.I., xv, 1882 (1883), 136. A. (Calymna) 

 costulata, Hutt., T.N.Z.I., xvi, 199. Gerontia (Calymna) costulata, Hutt. : 

 Pilsbry, Man. Conch. (2), viii, 73, ix, pi. 3, f. 20-22. Flammulina 

 (Calymna) costulata, Hutt. : Hedley and Suter, P.L.S. N.S.W. (2), vii. 

 645 ; Suter, J. de Conch., xli, 241. 



Shell very small, depressed, perforated, somewhat shining, very 

 finely ribbed, thin and fragile. Sculpture consisting of microscopic 



22* 



