1908] Decapod Crustaceans. 57 
Food: The stomach-contents of å number of specimens from 
the Christiania Fiord have been examined. Besides some dark 
mud, which constituted the principal portion of the stomach-contents, 
we also found the following :— 
Several whole Copepoda, as well as numerous limbs of the same. 
Parts of Annelids. Calcareous-spicules of Holothuria. 
Radiolaria. 
Foraminifera (Textularia Williamsonii, Ungerima sp., Noniomna 
umbilicatula). 
Masses of small spicules, probably from Spongia. 
Green Algae. | 
Diatoms (Navicula inmterrupta, &e., Navicula species. Rhizosolenia 
Shrubsolei, Melosira hyperborea, Chaetoceros sp.) 
Peridinea (Dinophysis acuta). 
Tintinnea (Cyttarocylis dentieulata). 
It would seem certain from this that Pandalus obtains its 
food from the bottom, and it probably feeds for the most part upon 
the remains of dead animals. The fishermen are quite aware of 
the fact that it consumes the herring-bait on hooks (lines) set for 
cod and haddock, and when fishing with the *elip” in the Dram- 
men Fiord they invariably fasten some pieces of herring as bait at 
the bottom of their nets. 
meproductive Orsans (PL. XI, figs. 1, 2,3, 4). 
Males. Testes (t): The right and left testes lie closely side 
by side throughout all their extent and reach forward towards the 
stomach, backward for a short distance into the abdomen. At 
their posterior extremities the testes of the right and left side are 
quite united, though no *”bridge” is to be found in the anterior 
part. As can be seen in fig. t, Pl. XI the testes have an elon- 
vated form somewhat pointed posteriorly. 
Vas deferens (vd): This emerges from the posterior part 
of tke testes. Like that of Homarus vulgaris it may be divided 
into three parts. The first is å quite thin rather short part which 
in some cases begins by forming å simple little coil, and then in- 
ereasing considerably in thickness forms å much larger double coil 
from which it continues to the central part (ef. the detailed 
