J. Turton’ ved sin forholdsvis bredere og mere regelmæs- 
sige Form og den betydelig skarpere, mere udprægede Sculp- 
tur, som i end høiere Grad kommer frem hos den Unge. 
Tenderne (Tab. IV, Fig. 1—3) ligner foregaaende Arts, 
men Sidepladerne har en slankere Form og Tænderne paa 
den indvendige Side er mindre udviklet. 
Rækkernes Antal hos det voksne Exemplar var om- 
trent 150. 
Arten er udbredt lige op til 80de Breddegrad, og 
dens Sydegrændse blev funden ved omtrent 66°. 
Volutopsis norvegicus, Chemn. 
Strombus norvagicus, Chemn, Conch. Cab. Mart. og Chemn. 
Pg. 218 Fig. 1497—98. 
Volutopsis norvegicus, Merch. 
Stombella, gen. Gray (non Schlut). 
Forekomst: St. 323—223 Favne og St. 333 —146 F. 
De arctiske Exemplarer synes at være mindre end 
Nordsøens, men forøvrigt er der intet afvigende i Form. 
Paa St. 323 forekom en Ægkapsel, og denne inde- 
holdt kun ef Embryo. 
Mr. Howse angiver i “Notes on a dredging Excursion 
off the coast of Durham” (1. c. Pg. 162), at V. norvegicus 
Kapsler indeholder 2 og 3 Embryoner, og dette bekræfter 
senere Dr. Jeffreys i “Br. Conch.” Der synes saaledes at 
være meget ubestemte Grændser for Arternes Frugtbarhed, 
men man tør vel neppe af dette ene Tilfælde udlede, at 
Arten i det kolde Ishav viser sig mindre frugtbar end i 
det varmere Nordsø Vand. 
Pyrolofusus deformis, Reeve. 
Tab. 1, Fig. 8 og Tab. IV, Fig. 11—13. 
Fusus deformis, Reeve, Conch icon. 1847 Vol. IV PI. 12, 
Fig. 45 a, b. 
Fusus (Pyrolofusus) deformis, Mørch, Cat. d. Mol. du Spits- 
berg Peg. 16. 
Forekomst: St. 866—61 F., 2 levende Exemplarer. 
Det største maaler 100”” lang og 66”” bred; Mund- 
aabningen 72”” Jang og 38"” bred. 
from that of J. Turtomi, by reason of its greater breadth 
and regularity of form, and sharper sculpture. 
The Dentition (Pl. IV, figs. 1—3 is similar in structure 
to those of the foregoing species; but the laterals have 
comparatively a slender appearance, and the cusps on the 
inner side are less developed. 
The number of rows in the full-grown specimen were 
about 150. 
This species occurs as far north at the 80th parallel 
of latitude, and its southern limit of distribution reaches 
down to 66°. 
Volutopsis norvegicus, Chemn. 
Strombus norvegicus, Chemn., Conch, Cab. Mart. and Chemn., 
" -p, 218, figs. 1497—98. 
Volutopsis norvegicus, Möreh. 
Strombella, gen. Gray (non Schlut). 
Habitat: — Stations 323 (223 fathoms); 333 (147 f.) 
The Arctic specimens would appear to be somewhat 
smaller than those from the North Sea; there is, however, 
no dissimilarity in form. 
An egg-capsule, containing only one embryo, was brought 
up at Station 323. 
Mr. Howse states in his “Notes on a dredging Ex- 
cursion off the coast of Durham,” (1. ¢. p. 162), that the 
capsule of V. norvegicus contains from 2 to 3 embryos, in 
which he is confirmed by Dr. Jeffreys in “Brit. Conch.” 
The limits of fecundity in this species seem accordingly 
to be very indefinite; we are, however, hardly warranted 
to infer from a solitary instance, that the species is less 
fecund in the Arctic Ocean than in the warmer waters of 
the North Sea. 
Pyrolofusus deformis, Reeve. 
Pl. I. fig. 8 and PI. IV, figs. 11—13. 
Fusus deformis, Reeve, Conch. icon. 1847, Vol. IV, Pl. 12, 
fig. 45 a, b. 
Fusus (Pyrolofusus) deformis, Mörch, Cal. d. Mol. du. Spits- 
berg, p. 16. 
Habitat: — Station 366 
specimens. 
The larger of the two individuals measured 100” 
in length and 66”” in breadth; the aperture was 72” 
long and 38”” wide. 
in 61 fathoms; 2 living 
