TrophoH.} GASTROPODA. 411 



<;. Trophon aucklandicus, E. A. Smith, 1902. Plate 46, fig. 18- 



Euthria aucklandica, E. A. Smith, " Southern Cross " Moll., 1902, 203, pi. 24, 

 f. 12, 13. Trophon aucklandicus, E. A. Smith : Suter. P. Mai. S., viii, 

 254, pi. 11, f. 3, 4. 



Shell small, fusiform, moderately solid, turreted, brown, axially 

 < estate and spirally lirate. Sculpture consisting of rounded axial 

 costae, 11 to 12 on a whorl, obsolete on the shoulder, crossed by 

 distant spiral lira?, which pass over the ribs. 4 on the penultimate 

 and about 9 on the body whorl, the lowest three or four more con- 

 spicuous than the others ; there are traces of additional fine spiral 

 stria? and growth-lines. Fascicle not very prominent. Colour red- 

 dish-brown, inside of aperture darker, columella whitish or light 

 brown. Spire elevated conic, turreted, its height variable, usually 

 a little more than the height of the aperture without canal. Proto- 

 conch minute, of 1 smooth convex whorl, mammillate. Whorls 6. 

 regularly increasing, lightly excavated upon the shoulder, convex 

 below ; base contracted above the canal. Suture superficial. Aper- 

 ture vertical, ovate, angled above, with a moderate oblique open 

 canal, which is slightly recurved. Outer lip thin and sharp, toothed 

 inside or smooth. Columella vertical, very little arcuate. Inner lip 

 narrow, spreading over the parietal wall, narrowed below. Oper- 

 eulum with the nucleus subapical. 



Diameter, 4-5 mm. : height. 9-5 mm. ; length of aperture with 

 canal, 5 mm. 



Dentition. (Plate 19, fig. 4) Central tooth with 5 cusps, the 

 central and outer ones large, the intermediate cusps minute. Laterals 

 falcate. 



Type in the British Museum. 



Hab. Auckland Islands, 10 fathoms (type) ; Te Oneroa, Preser- 

 vation Inlet ; Campbell Island (Captain Bollons). 



Remark. The shell has mostly a thick covering of nulliporites, 

 obscuring the sculpture. 







7. Trophon convexus, Suter, 1909. Plate 19, fig. 5. 



Trophon convexus, Suter, Rec. Canterbury Museum, i, No. 2, 1909, 126, 



pi. 12, f. 4. 



Shell very small, fusiform, thin, axially costate and spirally lirate. 

 Sculpture consisting of strong broadly rounded axial costse, about 10 

 on a whorl, extending fro-rn suture to suture but absent on the base, 

 crossed by distant and prominent spiral cords, with a few intercalated 

 fine threads upon the neck of the canal, produced into oval nodules 

 upon the axial ribs ; the spire-whorls with a fine thread below the 

 suture, margining it, and 3 distant strong spirals below it ; body- 

 whorl with 14 to 15 cinguli, those upon the base not nodulous ; fasciole 

 hardly discernible. Colour yellowish-brown, neck of canal and inner 

 lip whitish, interior of aperture light brown. Spire acuminate, conic, 

 of the same height as the aperture with canal. Protoconch papillate. 



