258 MR. R. COLLETT ON BALEZNOPTERA BOREALIS. — [Feb. 2, 
from B. sibbaldi!; but as it differs in several respects (thus the 
neck is reduced to a short and quite thin peduncle, from which the 
body expands rather abruptly to its full size without any gradual 
transition), I think that the species has not been previously de- 
scribed, and I propose for it the name £. ruber (figs. KE, E’). 
E. ruber bas on its proboscis about four rows of very thin, pointed, 
and quite transparent spines. 
The rostellum, the length of which (including the proboscis) is 2 
millim., is pointed in front, and has, as a rule, a more or less distinct 
constriction a little in front of its centre, whence the anterior part 
narrows regularly towards the proboscis. The rostellum has about 
Fig. B. Hehinorhynchus ruber, sp. noy. (nat. size 25 mm,). 
h', Front part, magnified, 
10 rows of spines, the concentric arrangement of which is not 
always plain. ; 
The. collum is thick anteriorly, and still somewhat narrower 
than the rostellum, but rapidly narrows off to a_thread-like 
peduncle ; the neck is, however, quite short, and the total length 
from the rostellum to corpus is only 3 millim., and is thus evea 
shorter than the breadth of the body. 
1 ‘Monogr. illustr. Baleinopt..... cote oce. de Suéde’ (fol, Stockhoim, 1867), 
p- 95. 
