382 



GASTROPODA. 



[Pect in ib r<i r, chia . 



KEY TO SPECIES. 



A. Axial costse extending over the upper whorls only. 



. Shell turgid, spire half or three-quarters the height of the 



aperture . . . . . . . . . . . . maculatn. 



ii'i. Shell fusiform or elongately oval. 



b. Shell spirally lirate or finely striate. 



c. Shell large and heavy, height 40-55 mm., tessel- 

 lated or with interrupted bands of purple . . macvlosn. 

 cc. Shell smaller, height 30-35 mm., with uninter- 

 rupted brown bands. 



d. Spiral bands about 15 on body- whorl . . Quoyi. 



dd. Spiral bands about 7-8 on body-whorl . . vittata. 



bb. Spiral sculpture absent or inconspicuous . . . . Carnpbelli. 



B. Axial cost* extending down the spire over the body-whorl. 



a. Spire higher than the aperture, costse extending to the suture 



above, 14 on the penultimate whorl . . . . . . Hutloni. 



act. Spire of about the same height as the aperture, 

 ft. Shell without colour- markings. 



c. Axial costse about 18 on the penultimate whorl, 

 shoulder with a series of tubercles below the 

 suture . . . . . . . . . . nassoidfs. 



cc. Axial costse about 12 on the penultimate whorl. 



shoulder smooth below the suture . . . . luridn. 



bb. Shell with colour-markings. 



c. Shell fusiform, cinguli of irregular width, shoulder 



distinct, concave . . . . . . . . costala. 



cc. Shell elongately oval, cinguli alternately broad and 



narrow, shoulder indistinct, not concave . . zealandio?. 



1. Cominella Carnpbelli, Filhol. 1880. Plate 45, fig. 3. 



Buccinum Campbelli, Filh., C'ompt. Rend., xci, 1880, 1094 ; Miss. I.C., 524. 



Shell fusiform, solid, almost smooth, olive-brown. Sculpture: Some 

 specimens show traces of distant spiral strise, but usually the surface 

 is smooth on the lower whorls ; two or three whorls below the proto- 

 conch are axially costate. Colour greyish or olive-brown, the aperture 

 dark purple within, the lips greenish or yellowish-white. Spire conical, 

 of the same height as the aperture ; outlines lightly convex. Proto- 

 i-nitch small, of 2 smooth whorls, papillate. Whorls 7 to 8, moderately 

 convex, a little depressed below the suture, the last high ; base con- 

 tracted. Suture superficial. Aperture a little oblique, oval, wide in 

 the middle, channelled above, with a short, somewhat oblique, widely 

 open, and not very deeply notched canal. Outer lip somewhat con- 

 tracted above, distinctly sinuate, expanded, sharp, thickened and 

 smooth inside. Columella vertical, almost straight, smooth. Inner 

 lip thin and narrow upon the pillar, spreading over the parietal wall, 

 which has a low tubercle below the suture ; narrowed below and 

 twisted. Fasciole not very prominent. Operculum horny, very thin 

 and translucent, nucleus apical. 



Diameter, 14 mm. ; height, 29 mm. (type). Diameter. 18 mm. ; 

 height, 33 mm. (largest specimen in rny collection). 



