534 GASTROPODA [Opisthobranchia. 



KEY TO SPECIES. 



A. Shell with microscopic spiral stria- on the upper part of the body- 



whorl ; solid, polished, flattened at the middle ; pale, marbled 



with reddish-brown, 2-4 bands of darker mottling . . . . Adamsi. 



B. Shell with distant linear grooves at the base. 



a. The whole surface microscopical!}- spirally striate ; yellowish 



or grey, marbled with light brown, 1 or 2 darker bands . . australis 



no. Microscopic spiral lirse obsolete ; usually uniformly reddish- 

 brown . . . . . . . . . . . . Quoyi. 



1. Bullaria Adamsi, Menke, 1850. Plate 49, fig. 6. 



Bulla Adamsi, Menke, Zeitschr. f. Malac.. 1850, 162 ; Brazier, P.L.S. N.S.W., 

 x, 1885, 92; Man. Conch. (1), xv, 345, pi. 35, f. 15, 16, 19, 20; Suter, 

 T.N.Z.I., xxxix, 265. B. austral is, \. Adams, Thes. Conch., ii, 576, 

 pi. 122. f. 64-66; Sowerby, Conch. Icon., f. 12; Watson, Chall. Rep., 

 xv, 638 (in part); not B. austral is of Gray, Sowerby, nor Quoy and 

 Gaimard. 



Shell oval-cylindric, solid, polished, almost smooth, marbled and 

 banded with reddish-brown. Sculpture consisting of distinctly marked 

 dense growth-lines, crossed by fine microscopic spiral stride on the 

 upper part of the whorl. Colour pale, closely marbled with reddish- 

 brown, generally having 2 to 4 bands of darker mottling ; aperture 

 and inner lip white. Spire sunken, vertex with a narrow deep per- 

 spective umbilicus, the earlier whorls spirally striated. The body- 

 whorl convex, flattened at the middle toward the aperture, angularly 

 narrowly rounded above ; base broadly convex. Aperture narrow 

 above, much wider below. Outer lip solid, with a rather blunt edge, 

 narrowly rounded, rising slightly above the vertex, nearly straight 

 in the middle. Basal lip broadly convex. Columella subvertical, 

 short, concave. Inner lip thick, spreading a short distance beyond 

 the pillar, and extending over the convex parietal wall. 



Diameter, 30 mm. ; height, 45 mm. Diameter. 16 mm. ; height, 

 26 mm. (New Zealand specimen). 



Animal unknown. 



Hab. Cape Maria van Diemen ; Bay of Islands (J. C. Anderson). 

 Also Tahiti ; Tonga ; islands in Torres Straits and off north-east 

 Australia. 



2. Bullaria australis, Quoy and Gaimard, 1833. Plate 49, rig 7. 



Bulla australis, Q. & G., Voy. Astrol., ii, 1833, 357, pi. 26, f. 38, 39 ; Gray, 

 Annals of Philos. (n.s.), ix, 1825, 408; Dieff. N.Z., 243; Chall. Rep., xv, 

 638; Man. Conch. (1), xv, 346, pi. 35, f. 12-14, 17, 18. B. oblonga, 

 A. Adams, Thes. Conch., ii, 1854, 577, pi. 123, f. 74; Conch. Icon., pi. 3, 

 f. 9; C.M.M., 52; M.N.Z.M., 121. For full list of references, see Prit- 

 chard and Gatliff, P.R.S. Vic., xv (n.s.), 214. 



Shell oval-cylindric, rather thin, shining, apparently smooth, with 

 a few spiral grooves at the base, yellowish- brown, marbled with darker, 

 sometimes transversely banded. Sculpture : There are distinct tlexu- 



