1908]  Decapod Urustaceans. 63 
of males on the corresponding tip of the inner branch of the Ist 
pair of pleopods. 
Pandalus annunlicornis Lraca. 
(P. montaguit LEACH.). 
We are in possession of specimens of P. annulicormis from å 
considerable number of fiords in the northern parts of the country, 
and also from western and eastern Norway. 
Bathymetrice Distribution: 'The species seems to vary å 
great deal in its bathymetric distribution, and has been found not 
only in the littoral region of western and northern Norway but 
also in the deeper fiord-basins. They have been taken by s/s *Michael 
Sars” right out at åa depth of 400 meters (61% 40' N, 39 11" E.), 
and F. Trypom!) records twenty specimens taken in the Norwegian 
Deep at å depth of from about 530 to 650 meters. 
Breeding-Season: Å large specimen was taken on the 
29th November in the Brevik fiord, which was berried but whose 
ova were not particularly highly developed. From the northern 
parts of the country too (Røvær, Malangen, Baadsfjord, &c.), we 
have specimens from the months of March, April and the first days 
of June. In these the ova were highly developed. From later on 
in the summer, that is to say after the first days of June, no ber- 
ried specimens have been found. 'Thus the breeding time of the 
species appears to be practically identical with that of Pandalus 
borealis. 
Size: As a rule P. annulicornis does not attain the size of 
the preceding species. About 60—70 mm. and under is its ordi- 
nary size. OQvigerous individuals- have been 50—70 mm., though 
I have found one berried female (in the Brevik fiord, eastern Nor- 
way, about 100 m. deep) which had åa length of 160 mm. 
Reproductive Organs: (PI. XII, fig. 1). Testes have the 
same oblong shape as in the two preceding species of Pandalus, 
)) ,lakttagelser om fisk och decapoder m. m. från Skagerack och Kattegatt 
i augusti 1901 och februari 1902 samt från Östersjöen i oktober 1901.* Svenska 
Hydrografisk-Biologiska Kommissions Skrifter I. 
