4cSO GASTROPODA. [Pectinibranchia. 



Hab. Foveaux Strait, in 15 fathoms, type (A. Hamilton) ; Port 

 Pegasus, Stewart Island, in 18 fathoms (Captain Bollons) ; near the 

 Snares, in 50 fathoms (Captain Bollons). 



Subgen. 2. CRASSISPIRA. Swainson, 1840. 



Crassispira, Swainson, " Malacology," 1840, 152, 313. Type : Pleurotoma 

 Bottce, Val. Tripia, de Greg., 1890. Crassopleura, Monts., 1884. 



Shell somewhat claviform, turriculated ; spire conic or conoidal ; 

 protoconch paucispiral. obtuse ; whorls with tuberculate or granulate 

 ribs, stopped suddenly at the depression of the shoulder ; body- whorl 

 but moderately convex, with a slight swelling on the beak ; aperture 

 narrow, the margins subparallel, with a shortly truncated and distinctly 

 emarginate canal ; outer lip arcuate, generally varicose above, with a 

 deep sinus in the depression, which is narrow and parallel with the 

 suture ; columella oblique, callous, with a thick callus on the parietal 



wall. 



KEY TO SPECIES. 



A. Spire a little higher than the aperture with canal ; whorls with 8-10 



large oval tubercles on the shoulder . . . . . . Angast. 



B. Spire nearly twice the height of the aperture with canal ; whorls 



with about 14 strong, oblique, rounded axial ribs . . . . Icevis. 



8. Drillia Angasi, Crosse, 1863. Plate 46, fig. 25. 



Drillia Angasi, Crosse, J. de Conch. (3), iii, 1803, 87, pi. 1, f. 5 ; Man. 

 Conch. (1), vi, 1884, 187, pi. 9, f. 37. Pleurotoma Beraudiana, Crosse, 

 J. de Conch. (3), iii, 1863, 88, pi. 1, f. 6. Drillia Beraudiana, Crosse, 

 Man. Conch. (1), vi, 187, pi. 9, f. 36. Pleurotoma (Crassispira) Beraudiana, 

 Crosse, Conch. Cab., 1887, 95, pi. 20, f. 7, 9. Drillia tceniata, T.- Woods, 

 P.R.S. Tas., 1879, 36. 



Shell rather small, somewhat claviform, turriculated, with prominent 

 tubercles and spiral lirse, dark brown, tubercles whitish, canal short. 

 Sculpture of the post-nuclear whorls consisting of axial slightly oblique 

 ribs, produced into rather large oval tubercles at the shoulder, about 

 8 to 10 on the penultimate whorl, becoming obsolete on the last half 

 of the body -whorl ; they are crossed by spiral lirae, fine and dense 

 on the concave shoulder, which is devoid of axial ribs, stouter and 

 more distinct below it. Colour chestnut-brown, with a whitish spiral 

 band at the angle of the periphery, tubercles usually white ; inside 

 of aperture dark brown. Spire elevated conic, turreted, somewhat 

 higher than the aperture. Protoconch of 1 smooth and convex turns. 

 Whorls about 8, with a narrow concave shoulder, the body-whorl 

 convex at the periphery, contracted at the base. Suture impressed, 

 somewhat uneven. Aperture narrow, angled above, with a short 

 open and truncated canal below. Outer lip slightly varicose, angled 

 above, with a moderately deep, narrowly rounded sinus in the de- 

 pression. Columella subvertical, arcuate. Inner lip narrow, with a 

 whitish thin callus. Operculum not seen. 



Diameter, 6 mm. ; height, 15 mm. 



