4 Alf Wollebæk. [No. 12 
When the Swedish Hydrographical-Biological Commission were 
engaged in making observations in the Skagerack off the coast of 
Bohuslån, three specimens were found which were added by Dr. 
Friuirp Trysom to this genus. Dr. Trysom found moreover two 
more specimens in the Riksmuseum at Stockholm, when he was 
making an examination of the material. These last had also been 
taken in the Skagerack, depth 410 meters, soft muddy bottom. 
The specimens found were described by Trysom as belonging 
to two species new to science. According to him they chiefly differ 
in the structure of the first pair of thoracic limbs (pereiopods). 
Unfortunately Dr. Try»om has not had more than one specimen 
of UC. crassipes at his disposal. In 1905, on the 24th April, during 
the investigations of the "Michael Sars”, ten specimens were taken 
at åa depth of 424 meters in the Hjoerund Fiord near Aalesund, 
which have already been alluded to by Dr. AprzrLLør in "Meeresfauna 
von Bergen” (vol. 2? and 3, 1906). Later on three more specimens 
were found in the Byfiord near Bergen, on 25th Sept. 1907, by 
the author, at åa depth of 400 meters and on å soft muddy bottom. 
Apart from the Skagerack and these two localities on the west 
coast of Norway Calocarides has not hitherto been known in northern 
waters. 
The only specimen found by Try»om, and which led to his 
diseovering and deseribing the species, was å male. The specimens 
found on the west coast of Norway were partly males and partly 
females: though none were ovigerous (bearing ova on the outside of 
the abdomen). Females of this species had not been previously 
discovered. 
Dr. Trysom has not described nor depicted in his work any 
of the oral parts of either crassipes or coronatus, if we except the 
third pair of maxillipeds in the case of the latter. SpencE BatTe 
in the Report on the Challenger Expedition vol. XXIV depicts 
some of the oral parts of one of the three specimens of Eiconaxius- 
species described (Hiconaxius acutifrons, Sp. B.) and points out 
that *the oral appendages do not differ very materially from those 
of Paraxiwus”. 
I am only in possession of material of U. crassipes; which I 
have described and illustrated in what follows for the purpose of 
comparing it with the above-mentioned species of SPENCE BATE 
and with UC. coromatus. Hitherto so far as I know there have not 
been published more than two figures relating to this species (in 
