The larval form of Chlopsis bicolor Raf. 
By 
Dr. Johs. Schmidt. 
Tarough Grassi and Calandruccio's work, later continued 
by Grassi, the larval forms of a series of Mediterranean eel- 
fishes have become known. In some cases, certainly, the detailed 
proof is wanting, but we have at any rate become acquainted with 
most of the generic types of larvae through the investigations of 
the Italian authors, and we may hope, according to Grassi's 
statement in his latest paper of 1910, that the, so far, preliminary 
notices will be followed by the long-expected, detailed proof. 
The genera of Mediterranean eel-fishes still unknown in their 
larval stages are Chlopsis and Todarus; regarding the genus Myrus, 
Grassi and Calandruccio certainly state, that they have found 
the larva, but they give no evidence or description. This may also 
be expected in the complete work. 
I propose to deal here with the larva of Ch/opsis, which is 
not mentioned by Grassi and Calandruccio, but which has 
been taken during my investigations with the ”Thor” in the Med- 
iterranean,. As might be expected, it belongs to quite a different 
type from the Mediterranean Leptocephali hitberto known, whilst, 
on the other hand, larvae of the same type have also been found 
in the Atlantic. 
To describe the form is hardly necessary, as reference can be 
made to the figure. At first glance the larva somewhat resembles 
Leptocephalus brevirostris, but when we examine a little further 
into details, we see at once, that the two forms have nothing to 
