514 On Entozoa from the Murman Coast. 
but the two portions of the cesophagus are, relatively to the 
whole body, considerably shorter, especially the anterior 
portion, which is only about half the length there given. 
Thus, in a specimen about 14 mm. long the anterior part of 
the oesophagus measures only 1:02 mm., the posterior part 
0°78 mm., and in a 37 mm. specimen the two parts measure 
1°8 mm. and 0°8 mm. respectively. ‘This seems to indicate 
that a good deal of variability exists. 
Dr. Cockayne informs me that these worms were not 
found, as usual, in capsules, but were embedded in the liver 
of the fishes or just under ifs covering membrane. When 
the liver was placed in a dish, they sometimes wriggled out 
quite freely. , 
Ascaris sp.? 
From one of the fishes, among examples of A. capsularia, 
there is one small larval Ascarid of another species. It is 
about 10 mm. long, having a head with three rudimentary 
lips and a boring-tooth, and a gradually tapering tail about 
0-2 mm. long, without a tail-spike. ‘There is a conspicuous 
excretory cell running back to about 1°38 mm. from the 
anterior end. The cesophagus is about 1 mm. long, and there 
appear to be no cesophageal or intestinal diverticula. 
Spiruride. 
Streptocara sp. [? S. pectin’fera (Neumann) ]. 
Host: Uria grylle. Yukanski, 27. vi. 1917. 
Neumann, in 1900, described a small nematode from the 
common fowl and guinea-fowl under the name of Spiroptera 
pectinifera. This has been made the type of a new genus— 
Streptocara—by Railliet and Henry *. 
The present collection contains a single female specimen of 
a worm which evidently belongs to the same genus, and 
answers so closely to the description of S. pectinifera that it 
may be specifically identical. The absence of a male, how- 
ever, renders determination uncertain and description compa- 
ratively worthless. he specimen in question was found in 
the crop of the host: If the species is identical with S. pecti- 
nifera, it is remarkable that it should occur in hosts so 
distantly related as the common fowl and the black 
guillemot. 
* Compt. rend. Soc. Biol. Ixxiii, 1912, p. 622. 
