1908] Decapod Crustaceans. 
Secondary sexual characteristics: 
69 
Like the preceding 
Pandalus species the female of P. propinquus has the endopodite 
of the 186 pair of pleopods drawn out into an elongated tip, and 
the male has the same member furnished with 
the organ of copulation (fig. 7 r.i. 1 PI. pd.). 
Appendix masculina on the 2nd pair of Pleopods 
of the male is furnished with åa double row of 
stiff setae down the whole side (see fig. 7, 2nd 
PI. pd.). In the said Pandalus-species I have 
generally found setae only round the tip, al- 
ways only in the distal half, never downwards 
along the whole appendix. Itis probable how- 
ever that the density of the setose covering is 
variable in the different individuals. (Cf. P. 
brevirostris). 
Pandalus (Pandalina Catman) brevirostris RTk. 
Breeding-Season: Of this species, so 
common along all our coast, we have material 
from the months of February, March, April, 
+ May, June, July and August. 
The first berried specimens were taken in 
the middle of March. We have ovigerous spe- 
eimens from several localities for the last half 
of this month, and in the whole of them the 
ova are only slightly developed, having prob- 
ably recently issued from the ovaries. In the 
last half of May and in June we find the ova 
highly developed and from July/August!) we 
have a rather large number of specimens from 
the fiords of Bergen, more than half of which 
have very highly developed ova: while of the 
non-ovigerous individuals we find several fem- 
ales which show unmistakable signs that the 
larvae have recently been hatehed. 
In contradistinetion to Pandalus borealis 
then we see that P. brevirostris spawns in the 
spring and that the larvae are hatched in the 
1) More exact dates are not given on the labels. 
DN 
Æ JE) 
li 
am ra U.å PL pd 
Fig. 7. Pandalus propin- 
GAUSs:I ri TM pli pda Inner 
plate of f5t Pleopod. a.m. 
and a.i. 2nd PI. pd. appen- 
dix masculina and appen- 
dix interna on 2na Pleopod. 
summer. 
It is therefore impossible 
to say in which of these two months ovigerous specimens were actually found. 
å TETT å 
Å 
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