Hvrrox.— Contributions to the Conchology of New Zealand. 293 
Eixpnanation or Prark XI. 
Fig. 1. Himantidium ferrugineus .. a anterior extremity 
.. b posterior extremity 
» 2. Himantidium morbosus .. a anterior extremity 
«. b posterior extremity 
a profile of anterior end 
b extremity of antenna 
» 3. Iulus antipodarum 
» 4. Polydesmus gervaisii .. a profile of anterior end 
.. b profile of posterior end 
» 5. Craspedosoma trisetosa .. a anterior end from above 
. b profile of anterior end 
» 6. Spherotherium leiosomus |... a 
Td pes nuchal plate e = 
segment from 
c last two dorsal elec 
from behind. 
Art. XL.—Contributions to the Conchology of New Zealand. 
By Prof. F. W. Hvrrox. 
[Read before the Otago Institute, 9th October, 1877.] 
lanthina iricolor, Reeve ; Conch. Ic., fig. 23. 
Specimens have been sent me from the North Island by Mr. T. Kirk. 
Trophon dubius, Hutton ; Jour. de Conch., 1877. 
Ovato-fusiform, thick; whorls seven, eonvex, rudely spirally ribbed, those 
of the spire whorls transversely ribbed. Aperture oval; canal very short, 
not bent, and rounded anteriorly. * Covered with a greenish-brown persistent 
epidermis. Interior dark purple; canal and anterior portion of columella 
whitish. L.'7; B. °4. 
Hab. Auckland—Mr. T. F. Cheeseman. 
Fusus spiralis, Adams ; P.Z.8. 
F. pensum, Hutton; Cat. Mar. Moll. 
Fusus incisus, Gould. 
Gould gives the habitat as uncertain, * probably New Zealand." I oe 
seen no specimens. 
* Shell of medium size and moderate thickness, of an elongated ovate 
form, of a cinereous brown colour, everywhere encircled with narrow, deeply 
impressed striæ of a more decided brown colour than the interspaces, about 
ten on the penultimate whorl. The apical whorls have also eight or nine 
longitudinal undulations. Whorls six or seven, convex, the last two-thirds 
the length of the shell, tapering about equally each way; siphonal beak 
short, a little recurved. Aperture one half the length of the shell, narrow, 
suboval; outer lip regularly arcuate, crenulated by the impressed lines, 
