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Walter M. Tattersall. 
peduncle, for a description of which Hansen's paper should be 
consulted. 
Dr. Lo Bianco referred a small specimen of Thysanopoda^ 8 mm 
in length, to T. microphthalma, chiefly on account of its having the 
rostrum acute instead of obtusely rounded. This, however, is a 
characteristic of young specimens only and I can see no reason 
against referring this specimen to T. aequalis. This species is, 
perhaps, the most abundant in the coUections. It occurred in 8 
gatherings of the Maia and no fewer than 36 of the Puritans hauls. 
The largest specimen measured 21 mm, which is 2 mm longer than 
Hansen's largest example. 
7. Thysanoèssa sp.? 
The single specimen apparently referable to this genus measured 
only 6,5 mm in length and was too small to be definitely associated 
with any known species. 
I am not aware that the genus Thysanoèssa has ever been 
recorded previously from the Mediterranean. It would seem to be 
very rare there, as this specimen was the only one I could detect 
from an immense material. 
8. Nematoscelis megalops G. 0. Sars. 
Dr. Lo Bianco did not refer the Nematoscelis captured by the 
Maia and Puritan to any of the recognised species. I found two 
species of the genus present, N. ìnegalops and N. microps. N. mega- 
lops was very abundant, occurring in 10 hauls from the Maia material 
and in 29 from the Puritan. The largest specimen measured 20 mm. 
9. Nematoscelis microps G. 0. Sars. 
N. microps, Hansen {1905 a and b). 
This species was almost as abundant as the last, occurring in 
10 of the Maia gatherings and 24 of those of the Puritan. It was 
generally found in company with N. megalops. The largest specimen 
measured 15 mm. The present material confirms Hansen's Observation 
that the spine on the lateral margins of the carapace is characteristic 
only of males and immature and sub-adult females, being quite 
obsolete in completely adult females. 
It was noticed in this coUection that the eyes of N. microps 
were invariably more or less well preserved while those of N. megalops^ 
