96 TROCHID. 
D. undulosa, Adams, P.Z.S., 1851, p. 182, Voy. Erebus and 
Terror, Moll., pl.1, f. 15. Trochus attritus, Hombron and Jacqutnot, 
Voy. Pole Sud, p. 57, pl. 14, f- 19-20. Shell globoso-conical, imper- 
forate ; spire depressed, greenish, ornamented with longitudinal undu- 
lating lines of purplish- “black, longitudinally substriated ; inner lip 
smooth ; margin of the columella sub-tuberculated ; outer lip sulcated 
within; margin brownish-yellow, articulated with purplish-black (Adams.) 
Dunedin. 
D. nigerrima, Chemnitz, v. pl. 185, f, 1848, Adams Gen. 
Moll., pl. 47, f- 7; Chenu, f- 2658, Zurbo nigerrimus, Gml. ; Turbo 
guoyt, Kien; Turbo araucanus, DOrb,; Labio melanoloma, Menke. 
Purplish-black, lightly spirally striated, interior white, iridescent. 
Length, °55 ; breadth, ‘85. 
Auckland to Dunedin. Chatham Islands. Auckland Islands. 
D. corrosa, Adams, P.Z.S., 1851, p. 180. Shell turbinated, im- 
perforate ; spire slightly elevated ; whorls rounded, rugose, dirty-blue ; 
body whorl sub-angulated ; inner lip smooth ; columella simple ; outer 
lip margined with yellow (Adams. ) 
New Zealand. (Hart.) Dunedin. 
D. (2) concolor, Adams, P.Z.S., 1851, ~. 180. Shell turbinately- 
conical, imperforate ; spire acute, brownish, longitudinally obliquely 
striated, transversely sub-lirate ; inner lip smooth ; umbilical region im- 
pressed ; columella arcuate, terminated in front by a tubercle ; outer 
lip margined with brownish-black (Adams.) 
New Zealand. (Hart.) 
D. gaimardi, Pippi; T: cingulatus, Quoy, Zc, iii., p. 259, pl. 
64, f 16-20 (not of Broccht ;) Monodonta angulatum, Gray, Die. N.Z., 
il, #, 238. Depressed, conical, with spiral granular ribs; black, the 
ribs with a few yellowish spots ; aperture white. 
Ibength;, -3);, breadth,’ +5. 
Auckland to Dunedin. 
Animal black above, smoky below. (Quoy.) 
Genus, TROCHOCOCHLEA-—Klein. 
Shell solid, conoidal, imperforate in the adult ; whorls smooth or 
transversely lirate, the last rounded at the periphery; aperture nearly 
rhomboidal ; columella thick and rounded, ending anteriorly in a 
slightly prominent tubercle. 
T. subrostrata, Gray, Dieff. N.Z, u., p. 238; Smuth, Voy. 
Erebus and Terror, Moll., pl. 1, f- t4. Shell conical, sub-orbicular; 
solid, black, with close wavy longitudinal yellow lines; spire short, 
whorls 5 ; last large, rounded, hinder part with three to six spiral keels ; 
axis imperforated ; throat smooth and silvery (Gray.) 
Auckland to Dunedin. © 
T. mimetica, Hutton, Jour. de Conch., 1878, p. 32. Perforated; 
