CRUSTACEA. 
Il—CUMACEA. 
By W. T. Cauman, D.Sc. 
(1 Plate.) 
THE collection of Cumacea obtained by the ‘Discovery’ is a very small one. In 
addition to a species collected at the Auckland Islands and omitted from the present 
report as not belonging to the strictly Antarctic fauna, it comprises only four species, 
two of which are represented by solitary specimens. 
No Cumacea have hitherto been recorded from within the Antarctic Circle. In 
the sub-Antarctic region five species were got by the ‘Challenger’ at Kerguelen and 
described by Prof. Sars, and Dr. Zimmer has more recently described two species from 
South Georgia and four from Tierra del Fuego: Iam unable to identify any of these 
species in the present collection. 
On the other hand, I have regarded one of the forms got by the ‘ Discovery’ as a 
variety of a species known hitherto from the North Atlantic and the Mediterranean. 
It is necessary to add, however, that I do not think much importance can be attached 
to this circumstance from the point of view of zoo-geography. In this connection I 
would refer to the emphatic statement of Dr. Giesbrecht, already quoted with approval 
by Dr. H. J. Hansen :—‘‘ Unsere Kenntnisse von der Microfauna der Kiisten 
aussereuropaischen Meere sind kaum der Rede werth.” My own work leads me to 
believe that the Cumacea will, in the future, illustrate most admirably the opinion of 
these two distinguished carcinologists. The species in question, Campylaspis verrucosa, 
was described by Prof. Sars in 1863, and, until 1901, it was only known from 
Norwegian seas. More recently it has been obtained by Mr. E. W. L. Holt off the 
West of Ireland, and by Dr. Lo Bianco in the Mediterranean, near Capri. There can 
be little doubt that, with appropriate methods of collecting, its known range might be 
vastly increased, and it might even be found to be continuous with that of the variety 
now described. 
LEUCON AUSTRALIS. 
(Text-figs. 1-3.) 
Description of Ovigerous female.—Total length, 3°5 mm. Carapace about two- 
sevenths of total length, compressed, the dorsal crest closely serrated throughout its 
whole length. Pseudorostrum horizontal or very slightly upturned, acute, a little less 
than one-fourth of total length of carapace. Antennal notch widely open, occupying 
the whole of antero-lateral margin. Antero-lateral angle prominent, triangular, 
