50 
the ripening process of the sperm has commenced 
but is not completed. 
Group Il. The tail contains mature sperm (the whole mass 
still present or a part of it evacuated). All eggs 
immature. Receptacula seminis may contain sperm. 
Group IlI—-IV. Sperm completely evacuated. All eggs immature 
or ripening process commenced. 
Group HL. Oviduct filled by mature eggs. 
Group IV. Eggs spawned. 
Among material from Greenland I have only observed 3 spec- 
imens of group III, all from "Tjalfe" stat. 171. — No specimens 
of group IV have been observed. 
The puberty is reached, as a rule, when the length of the 
individual is a little more than 30 mm. I have seen, however, 
immature specimens being as much as 37 mm. The three spec- 
imens of group III mentioned above have the following sizes: 29, 
40, and 40 mm. 
As to the time of breeding I shall make the following remarks. 
From the autumn (about October Ist) of 1908 we possess a large 
material of Eukrohnia hamata from the Atlantic stations. It con- 
sists of young individuals exclusively (from the deepest haul, stat. 
285, 1000 m wire, a few specimens as much as 26 mm long, 
but far from maturity, are present); as a rule a very large 
number of individuals were captured. — Regarding the material 
taken in the spring (end of April to June) in the open sea (the 
Atlantic and the Davis Strait), we find that no mature specimen 
(group II or older) has been captured within a distance of about 
350 m from the surface, and only from hauls with 1200 m wire or 
more (ca. 800 to ca. 1400 m below the surface) a somewhat con- 
siderable number of mature specimens are present (stat. 322, 333, 
336). The breeding must take place, accordingly, in deep water, 
and we find here the same facts as have been found in other 
regions, that the relative number of larger individuals increases 
with the depth (compare Ritter-Zåhony 1910). — Young spec- 
imens (about 10 mm) were found almost everywhere and at every 
time, though by far the greatest number occurred in the autumn. 
