Entomostraca from the Arctic Seas. 348 
Amymone spherica, Claus. 
One or two specimens of an Amymone that appear to belong 
to this species were dredged in 20 fathoms between Kolguev 
and the neighbouring shores of Novaya Zemlya on the 16th 
of June. 
Ameitra longipes, Boeck. 
This species occurred very sparingly in some material 
dredged in 20 fathoms off Kolguev on June 11th, and in 
27 fathoms in the vicinity of Hope Island on July 6th. 
Jonesiella spinulosa (Brady & Robertson). 
A few specimens of Jonesiella spinulosa were found in a 
shore-gathering from the east side of Kolguev Island, collected 
on June 12th, and in some material dredged in 60 fathoms in 
lat. 76° 17’ N., long. 21° 36’ E., on July 20th. 
Jonesiella Brucei *,'T. & A. Scott (sp. n.). (PI. IIT.) 
Description of the Species—The length of the female 
represented by the drawing (fig. 1) is °98 mm. (nearly 3, of 
an inch). The body is moderately stout and terminates 
anteriorly in a prominent rostrum; the abdomen is compara- 
tively short, while the caudal furca are slender and about 
as long as the entire length of the last three abdominal 
segments. 
The antennules are short and six-jointed ; the first two and 
the last joints are of nearly equal length and longer than any 
of the other three, the penultimate joint is very small, while the 
third and fourth are together about equal in length to the second 
joint. The formula shows approximately the proportional 
lengths of the different joints:— 
Number of the joints ...... PS eB 
Proportional lengths ...... Ho ley emo OB 
The antennules, as shown by the drawing (fig. 2), are 
provided with numerous moderately long sete. The antenne 
(fig. 3) are somewhat like those of Jonesiella hyene, I. C. 
‘Thompson, in their general structure, the secondary branches 
being also three-jointed, as in that species. 
The mandibles (fig. 4) are moderately stout and furnished 
with a well-developed two-branched palp, but the branches 
appear to be uniarticulate. The maxille (fig. 5) are some- 
what like those of Jonesiella fusiformis, G.S. Brady; the 
* Named after Mr. W.S. Bruce, to whom we are indebted for the 
privilege of describing the species. 
