Trophon.] GASTROPODA. 415 



flatly rounded axial ribs are sometimes present, but they may be ab- 

 sent and replaced by numerous indistinct narrow ribs, rendering the 

 spirals slightly nodulous ; fasciole distinct. Colour chestnut-brown, 

 the grooves usually cinereous ; the shoulder of the whorls sometimes 

 whitish ; aperture brown inside. Spire of the same height as the 

 aperture or higher, conical. Protoconch broken off in all specimens 

 I have seen. Whorls 5, distinctly shouldered and sometimes carinated, 

 the last ventricose, convex below the shoulder, much contracted above 

 the canal. Suture superficial. Aperture broadly ovate, subvertical, 

 broadly angled above, with a short open oblique canal, bent to the 

 left. Outer Up sharp, slightly crenulated by the spirals, smooth inside, 

 angled above. Columella vertical, very little excavated. Inner lip 

 narrow, extending over the lightly convex parietal wall, and narrowed 

 towards the inner margin of the canal. There is no umbilical fissure. 

 Opercuhim unknown. 



Diameter, 18 mm. ; height, 28 mm. (type). Diameter, 13 mm. ; 

 height, 24 mm. (specimen from Te Onepoto). 



Dentition unknown. 



Type in the Dominion Museum, Wellington. 



Rob. Stewart Island (type) ; Chatham Islands ; Te Onepoto, near 

 Lyttelton (H. S.). 



12. Trophon Paivae, Crosse, 1864. Plate 45, tig. 22. 



Trophion Paivce, Crosse, J. de Conch., xii, 1864, 278, pi. 11, f. 7 ; Mutton, 

 M.N.Z.M., 49. Urosalpinx Paivce, Crosse, Man. Conch. (1), ii, 155, 

 pi. 39, f. 495, 499. Peristernia Paivce, Crosse : Tate, T.R.S. S.Aust., 

 x, 1888, 154. Kalydon Paivce, Crosse : Hedley, Mem. A.M., iv, 1903, 

 380. Trophon Hanleyi, Angas, P.Z.S., 1867, 110, pi. 13, f. 1. Fusux 

 Hanleyi, Aug., Chall. Rep., xv, 194. Trophon australis, T. -Woods, 

 P.R.S. Tas., 1875 (1876), 136. T. Assist, T.-Woods, I.e., 1876 (1877), 

 132. T. squamosissima, T.-Woods, I.e., 1878 (1879), 33. 



Shell small, fusiform, short broad and solid, or long slender and 

 rather thin, angled at the shoulder, axially distantly costate and 

 spirally lirate. Sculpture consisting of 8 to 9 broadly rounded axial 

 ribs, extending over the greater part of the base, crossed by numerous 

 subequal spiral threads, sometimes obsolete upon the shoulder, the 

 whole shell ornamented with fine crispate growth-lamellae ; fasciole 

 distinct, lamellate. Colour grey or light brown, white or purple 

 within the aperture. Spire elevated conic, of the same height as the 

 aperture with canal. Protoconch of 2 axially finely costate whorls, 

 the nucleus small, pointed. Whorls 6 to 7, shouldered and straight or 

 lightly convex below the carina ; base contracted towards the canal. 

 Suture not deep. Aperture subvertical, oval, angled above, pro- 

 duced below into a short or moderately long open and somewhat 

 recurved canal. Outer lip sharp, crenulated by spiral sculpture, 

 smooth or dentate inside, angled above and contracted below. Colu- 

 mella vertical, straight. Inner lip extending a little beyond the 



