S f r(,ho.] GASTROPODA. <)")"< 



1. Serpho Kivi, Gray, 1843. Plate 50, tig. 7. 



NaninaC!) Kivi, Gray, Dieff. N.Z., 262. Helix Kivi, Gray : Pfeiffer, M.H. 

 Viv., i, 192 ; Reeve, Conch. Icon., vii, pi. 130, f. 794 ; Ereb. & Ter., 

 1, pi. 1, f. 1 ; Hector, Cat. Land Moll. N.Z., 17. Nanina (Microcystit} 

 Kivi, Gray, Nomencl. Hel. Viv., 36. Helix Kivi, Gray : Hutton, 

 M.N.Z.M., 20. Carthcea Kiwi, Gray: Hutton, T.N.Z.I., xvi, 189. 

 Helix (Carthcea) Kivi, Gray : Tryon, Man. Conch. (2), iii, 37, pi. 21, 

 f. 8-10. Carthcea Kivi, Gray : Hedley and Suter, P.L.S. N.S.W. (2), 

 vii, 633. Flammulina (Carthcea) Kivi, Gray : Pilsbry, Man. Conch. (2). 

 ix, 339 ; Suter, J. de Conch., xli, 247. Helix irradiata, Gould, P. Boat. 

 S.N.H., ii, 1848, 178 ; U.S. Expl. Exp., xii, 34, pi. 5, f. 65, a-c ; Pfeiffer. 

 M.H. Viv., i, 29 ; Cox, Mon. Austral. Land SheUs, 35, pi. 20, f. 10, a, b : 

 Hutton, M.N.Z.M., 20. H. radiaria, Pfeiffer, P.Z.S., 1854 (1855), 55 ; 

 M.H. Viv., iv, 166; Reeve, Conch. Icon., vii, pi. 189, f. 1322. Charopa 

 (Thalussia) radiaria, Pfr. : Tryon, Man. Conch. (2), ii, 213, pi. 62, f. 52. 



Shell turbinate, sub- or im-perforate. thin and fragile, not shining. 

 Sculpture : Protoconch microscopically finely spirally striated ; the 

 succeeding whorls closely radially striated, the striae on the upper 

 whorls sometimes real riblets. 7 to 8 per millimetre, they are obliquely 

 retractive and flexuous ; interstices with minute growth-lines and 

 spiral striae. Colmtr white, with short irregular oblique, purple-brown 

 vstreaks. Spire subconical. obtuse, lightly convex, nearly the same 

 height as the aperture. Protoconch conoidal, of 1^ convex whorls. 

 Whorls 6, flattish, the last distinctly angled on the first half of the 

 periphery, subangled on approaching the aperture ; base convex, 

 flattened and slightly depressed in the middle. Suture well marked, 

 not deep. Aperture oblique, broad, lunar. Peristome simple, straight. 

 Columella very short, vertical. Inner lip callous, oblique, reflexed 

 above and quite or partly closing the perforation, continued broadly 

 as a thin callosity over the convex parietal wall. 



Diameter Maj.. 10 mm. ; min., 9 mm. : height, 8 mm. 



Dentition. Hutton, T.N.Z.I.. xvi. 170, pi. 9. f. A ; pi. 11, f. I. 



Jaw composed of about 50 separate overlapping plates, the length of 

 which is four or five times the breadth ; all the plates transversely striated. 



Radula (Plate 1, fig. 13) with the formula 28+1+28; laterals 

 about 15. Central tooth rectangular, the length twice the breadth. 

 the reflexed portion not reaching half-way over the base, and slightly 

 constricted at the sides, with a broad cutting-point. Laterals with 

 the reflexed portion sinuated on the inner margin, and an additional 

 small point on the outer side. Inner marginals with a broad blunt 

 double cutting -point, with several small acute ones outside it ; outer 

 marginals with 3 or 4 acute points. 



Type in the British Museum. 



Hal>. North Island : Tom Bowline's Bay, North Cape (C. Cooper) ; 

 Hokianga ; Bay of Islands ; Whangarei ; Whangaroa ; Great Omaha ; 

 Waiwera ; Kaitaia (R. H. Matthews) ; Waitakerei Range (H. S.) ; 

 . Titirangi: Thames; Waiheke Island (H. S.) ; Taupiri ; Ohaupo : 

 Midhirst, Taranaki ; Hunua Range ; Mount Pirongia ; Hawke's Bav ; 

 Wellington ? (T. W. Kirk). 



Remarks. H. irradiata, Gould, was wrongly ascribed to Australia. 

 and H. radiaria. Pfr.. to the Solomon Islands. 



