680 GASTROPODA. [Pulmonata. 



10. Flammulina Perdita, Hutton, 1883. Plate 9, tig. 12, a, b. 



Amphidoxa Perdita, Hutt., N.Z.J.S., i, 1883, 476 ; T.N.Z.I., xvi, 179, 198. 

 Gerontia (Calymna) Perdita, Hutt. : Pilsbry, Man. Conch. (2), viii, 76, 

 pi. 22, f. 73-75. Flammulina Perdita, Hutt. : Hedley and Suter, P.L.S. 

 N.S.W. (2), vii, 644 ; Suter, J. de Conch., xli, 241. 



Shell small, depressed, perforated, smooth, thin, shining, pellucid. 

 The only sculpture consists of irregular oblique and arcuate growth- 

 strise, with occasional periods of rest ; there is no spiral sculpture. 

 Colour pale olive-horny. Epidermis thin, shining, pellucid. Spire very 

 broadly convex, its height not quite three-fourths that of the aperture. 

 Protoconch of 1| smooth and convex whorls. Whorls 3| to 4, rapidly 

 increasing, rounded, periphery narrowly convex ; base less rounded. 

 Suture deep. Aperture oblique, ovately lunate. Peristome thin, 

 straight ; the outer lip in advance of the basal lip ; margins con- 

 verging. Columella oblique, arcuate. Inner lip very little thickened, 

 reflexed above, and partly covering the deep perforation, whose dia- 

 meter is 0-7 mm. 



Diameter Maj., 5-75 mm. ; min., 5 mm. : height, 4-5 mm 



Animal and Dentition. Hutton, T.N.Z.I., xvi, 179, pi. 11, f. C, Q. 



Animal with the mantle central, slightly reflected over the peri- 

 stome of the shell ; tail pointed, depressed, with a mucous gland. 

 Colour dark slate-grey, the mantle marbled with black and white ; 

 sole dirty-yellowish. 



Jaw arcuated, with 30 to 40 delicate rounded plaits. 



Radula with the formula 20+ 1 + 20 ; laterals 6 to 7. Central and 

 lateral teeth tricuspid ; marginals with 3 cutting-points, coalescing 

 on the outer teeth. 



Type in the Canterbury Museum, Christchurch. 



Hob. North Island : Whangarei ; Auckland (Gillies) ; Thames 

 (Adams) ; Hunua Range (Major Broun) ; Waikato ; Ohaupo ; Tirau ; 

 Mount Pirongia (Urquhart) ; Ngaputahi and Ruatahuna, Tuhoe- 

 land ; Wanganui ; Seventy-mile Bush ; Wellington. South Island : 

 Kenepuru (McMahon) ; Wairoa Gorge ; Akaroa (F. Suter) ; Grey- 

 mouth, type (Helms) ; Preservation Inlet. 



11. Flammulina phlogophora, Peifier, 1850. Plate 26, fig. 18, a, b. 



Helix phlogophora, Pfr., P.Z.S., 1849 (1850), 127 ; Reeve, Conch. Icon., 

 vii, pi. 130, f. 790; Pfeiffer, M.H. Viv., iii, 34; Conch. Cab. (2), 

 i, pi. 155, f. 1-4. H. (Paryphanta) phlogophora, Pfr. : Hector, Cat. 

 Land Moll. N.Z., 4. Nanina (Paryphanta) phlogophora, Pfr., Nomencl. 

 Hel. Viv., 35. Paryphanta phlogophora, Pfr. : Hutton, M.N.Z.M., 22 ; 

 Trvon, Man. Conch.' (2), i, 128, pi. 26, f. 10. Vitrina zebra, Le Guillou, 

 Rev. Zool., v, 1842, 136; Pfeiffer, M.H. Viv., ii, 509; Hector, Cat. 

 Land Moll. N.Z., 1. Helix zebra, Le Guill., Cat. Pulm. Brit. Mus., 70. 

 Flammulina zebra, Le Guill. : Hedley and Suter, P.L.S. N.S.W. (2), 

 vii, 643 ; Suter, J. de Conch., xli, 238 ; Pilsbry, Man. Conch. (2), ix, 

 pi. 3, f. 23. Helix flammigera, Pfeiffer, P.Z.S., 1852 (1854), 147. 

 H. mullilimbata, Hombron and Jacquinot, Voy. P.S., v, 1854, 16, pi. 6, 

 f. 5-8. 



