1908] Decapod Orustaceans. | 
along nearly the whole of its length, as we saw in P. propinquus, 
sometimes only in the distal half. 
The five Pandalidae which we have here diseussed comprise 
the whole of the Norse species that are so-far known. 
Pasiphaea tarda Kr. 
Habitat: In the deeper portions of the Norse fiords this spe- 
eies is very frequently taken together with Pandalus borealis. It 
is well-known by our fishermen who call it ,Glasræke*" or glass- 
prawn. In its fresh state before being put into alcohol it is very 
transparent and has red spots on its sides, while its red liver can 
be clearly seen through the carapace. I have found them very 
numerous in the Trondhjem fiord (225 fathoms) and in the Grøns- 
fjord (90 fathoms) on the south coast of Norway. 'The species is 
however no distinet bottom-form. They are frequently found pelagie, 
often even when they are of a large size. 
To call this species, as Dorrein has done, *specifiseh arktiseh” 
seems to me to be a little misleading. 
Breeding-Season: In January (1899) some specimens were 
taken in the Trondhjem fiord with quite freshly deposited ova. 
We are also in possession of specimens from the summer months 
with ova not very far developed. From the end of March we have 
a specimen (from Herløfjord near Bergen) with very highly developed 
ova. Similar ova were also found on å specimen taken on 29th 
June between the west coast of Norway and the Faroe islands. 
From the fiords on the west and south-west coast of Norway we 
have several ovigerous spectimens from the middle of July to the 
middle of August. In the specimens from both July and August 
the ova were very highly developed. 
Ås we have specimens of this "half-pelagic” species not only 
from the spring but also from well on in the summer it would seem 
probable that it has two breeding-seasons in the year. In any case 
there appears in the southern Norse fiords to be å hatehing-period 
early in the autumn. 
Ova are of an oval form, fully 2 mm. (nearly 2"/> mm.) long 
and fully 1"> mm. broad, when they have first become attached to 
the abdominal segments. Ås the ova are of so large a size, there 
