50 
over great depths of the ocean, seems to exclude the possibility 
that the species spawns on the bottom, 6000 m. below the surface I 
where the larvae were fonnd. 
The four species mentioned with Anguilla vulgctris , Anguilla 
rostrata and Synaphobranchus pinnatus compose the gieatei pait of w 
our material from the North Atlantic region. Postponing meanwhile I 
an account of the biology and distribution of the last 3 species I fj 
may sum up our results regarding the distribution of the other I 
four. According to the foregoing C. balearicus belongs apparently 1 
to the western region (west of 30° W. Long.), though a foim veiy 1 
closely related to it occurs in the Mediterranean. In regard 1 
to the others, C. mystax is apparently restricted to the Meditei- I 
ranean and adjacent parts of the Atlantic and oui investigations with jj 
the “Thor” show that it spawns in the Mediterranean in summer | 
and autumn. C. vulgaris propagates both in the Mediteilanean and jj 
in the eastern part of the Atlantic between 30° and 40° N. Lat. 1 
but not off the shores of the British Isles or France, noi fuithei j 
to the north or east; we may thus conclude that the Congei living jj 
here, like the fresh-water eel, migrate south- and westwards in order jj 
to spawn in warmer and salter water than they live in duiing theii jj 
vears of growth. All the information obtained from our present in- 
vestigations show that Conger vulgaris has a rather restricted : 
spawning-time in spring and summer. 
L. lanceolatus occurs both in the western, cential and eastein j 
parts of the Atlantic between ca. 25° and ca. 35° N. L., where it is 
born in the central, deep parts of the ocean — a faet which also applies 
to L. ingoljianus and most likely to many other murænoid species. 
On the other hånd my investigations in the Mediterranean 
have shown that the dogma put forward by Gr as si that all Murænoids 
spawn m deep water (at least 500 m.) cannot be maintained. As 
and distant pigment patclies sublaterally in the front part of the ’ 
body. For this form I propose the name L. Andreæ in honour of 
the late Danish captain who collected sucli a valuable material of 
Leptocephali. 
