2 T. V. HODGSON. 
The remainder of the collection falls into well-known genera, and does not call for 
any special comment. A list is appended below of all the species now known from the 
Antarctic and sub-Antarctic regions, those taken by the ‘ Discovery’ being marked with 
an asterisk. The numerous islands scattered about the southern seas have long been 
considered to pertain to the sub-Antarctic region, and for this reason I have made the 
mean annual isotherm of 45° F., as indicated by Sir John Murray in the concluding 
volume of the “Challenger Reports,” its northern limit. This includes all that can 
reasonably be considered as belonging to this region, and coincides very closely with 
the opinion expressed by Professor P. Pelseneer in his Report on the Mollusca of the 
‘Belgica’ Expedition. For the Antarctic proper the latitude 60° 8. seems suflicient 
as it includes all the glaciated lands of Antarctica, and the shallower waters less than 
1000fm., connected therewith. 
. 
Antarctic. Sub-Antarctic. 
Pycnogonum magellanicum, Hoek . : 2 - : 2 x 
5 magnirostre, Mobius. : : : 4 : x 
* Phoxichilus australis. : : : : : : : x 
Pallene dimorpha, Hoek : : : : ; ; : x 
* Pseudopallene cornigera, Mébius —. : : : F 4 x x 
= 7 australis ; : : : ‘ . : x 
Pallenopsis patagonica, Hoek. : : : : 
bs i pilosa, Hoek c : é 3 : d 7 x 
3 fluminensis, Kroyer : ; 
* glabra, Mobius. : : ‘ : ‘ ‘ x 
3 villosa : c F : : F , : x 
35 hiemalis. : : : : , : 3 x 
Anoplodactylus neglectus, Hoek 
of petiolatus, Kroyer . ; ; : : : 
Nymphon gracile, Leach 5 : : : : . 3 
a gracilipes, Miers. F : : : 
»  brachyrhynchum, Hoek . : : : 
. hamatum, Hoek 
3 fuscum, Hoek : 
Pr meridionale, Hoek . 
3 antarcticum, Pfeffer 
‘5 hiemale 
lanare . A 
3 adareanum 
»  frigidum : 6 : : ; : c 
Cheetonymphon brevicaudatum, Miers. ; : : ‘ x 
Pe villosum : : : : 
55 biarticulatum 
. mendosum : 
es australe, Hodgson . 
.. Pa var. austrinorum 
* Pentanymphon antarcticum 5 - 5 ; : ; 
Leionymphon striatum, Mébius —. , ‘ ; : : x 
a grande, Pfeffer ‘ 3 ; ; 
Pa gibbosum, Mobius. : : , ; : x 
minus. ; F : : ‘ : x 
MS caw 
* 
x 
xX XX XK XK XK X 
x 
x * oe 8 
x X X X 
* 
* 
Ms OS KOS OK 
* 
