62 Alf Wollebæk. [No. 12 
east coast of Norway at Drøbak (4 specimens) and in the Brevik- 
fjord (100 m. 3 specimens). | 
Besides these we have specimens taken during the eruises of 
s/s *Michael Sars” in the following localities:— 
29th June 1902, st. 37: 629 43' N, 19 26' E, 775 
m. 1 specimen 
14ih July -—> , 47: 60" 57 N. 3 491 550 MER 
14th July —- 9 48: 619 — N, 2 55 E 275 or 
15th July — >, 50: 61" 14. N 2 13 1 155 m 9 
15th July  —. , SLL610 40 NG 8G RO — 
1903: North Sea, 10 — 
Breeding-Season: Of all these specimens only one was 
berried. This was a specimen taken on 15th July [st. 50: 619 
14 N, 29 13' E, 145 m.]. The ova on this individual were very 
highly developed. I have never found P. borealis ovigerous at the 
same time of year. 
Reproductive Organs: (Pl. XII, fig. 2. In the males 
these differ in many respects from those of P. borealis. In the 
posterior end of the testes the left side is coiled over the righi. 
This was the case in all the specimens examined, while there has 
not been å single instance of it in P. borealis. 
As will be seen in Pl. XII, fig. 2, vas deferens in P. lep- 
toceros var. Bonmieri has åa coil consisting of considerably more 
windings than in P. borealis. However in the middle part of vas 
deferens the Ductus ejaculatorius was identical with the same 
structure in P. borealis. 
Spermatozoa (Sp.) very much resemble those of P. borealis. 
They have been found with rather longer though almost equally 
thin ends. | 
Ovaries correspond in shape to those of Pandalus borealis. 
Secondary sexual characteristics: The elongated tip 
on the inner branch of the 1st pair of pleopods of the females, and 
the appendiz maseulina on the 2nd pair of pleopods of the males 
are both in all essentials identical with the same parts in Pandalus 
borealis. 
Cincinnuli resemble those of P. borealis, and are to be found 
on the corresponding appendices internae, as well as in the case 
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