48 
a single haul of 1/2 an hour with a net of 1!/2 m in diam., near 
60? W. and 25? N. According to our present investigations ”it 
occurs between 15? and 43? N. and between 32? and ca. 75? W. 
but it has not yet been taken east of 30? "W. Long. In the 
Mediterranean we find a very closely" related but not quite 
identical form; of' this the greatest number of larvae were 
taken in the eastern basin (east of Italy): On the other 
hand, we have larvae from the eastern part of the Gulf of Mexico, 
which differ from the central Atlantic larvae by a lower average 
number of vertebræ. Thus, in the North Atlantic region we 
have 3 forms of C. balearicus, whose larvae can be distinguished 
by a small average difference in the number of vertebræ. The 
larvae living in the Western and central parts of the West Atlantic 
have the highest number of vertebræ, whilst in the larvae from 
the European and American Mediterranean (Gulf of Mexico) the 
average is a little lower. 'Furthermore, we have specimens from 
the Southern Atlantic and the Indian Ocean in the older Danish 
collections, and in the collections of the "Albatross” from the Phil- 
ippines I "have seen quantities of related Leptocephali.  Conger 
balearicus-like forms must therefore be "very widespread in the 
warmer parts of the oceans. , 
AS our material does not contain smaller larvåe of this species 
than 21/2 cm., it is impossible to determine the position of its 
spawning-places in the Atlantic and even though the various sizes 
of the larvae at different places over the vast region of occurrence 
seem to indicate, that the spawning of the species is restricted to 
certain parts, I prefer to postpone discussion of this question until 
we have obtained more definite data. : 
Lastly, I may just briefly refer to a fourth species of 
Leptocephalus, which is represented in our collections by åa large 
and valuable material. In old samples dating from Capt. Andréas 
time, a Danish Captain who made pelagic collections for the Z00- 
logical Muséum in Copenhagen between ca. 1860 and 1880, as also 
in collections made during recent years for "Kommissionen for Hav- 
