344 Messrs. T. and A. Scott on some 
masticatory lobe is stout and armed with several setiferous 
spines, and the palp has a somewhat complex lobate structure; 
the basal joint of the palp, which is articulated near the middle 
of the masticatory lobe and extends forward alongside of it, 
is moderately stout ; the secondary joint is scarcely so broad 
as the terminal part of the basal joint, and is provided with 
two small supplementary branches. 
The maxillipeds resemble those of Jonesiella spinulosa 
(Brady and Robertson) ; figure 6 represents one of the second 
maxillipeds. 
The swimming-feet are also somewhat like those of the 
species just referred to, except that the first pair do not appear 
to be so strongly setiferous. The two-jointed inner branches 
of the first pair (fig. 7) are about as long as the three-jointed 
outer branches. In the next three pairs, which are all some- 
what similar in structure, the inner as well as the outer 
branches are three-jointed (fig. 8). In the fifth pair the 
secondary joints appear to be more or less coalescent with 
the basal joints as shown in the drawing (fig. 9), and thus 
assume a bilobed appearance; the inner lobe bears four 
elongated sete, two of which spring from the distal half 
of the interior margin and two from the apex, while the 
outer lobe carries one long and one short apical seta, as well 
as a moderately stout seta on the exterior margin. 
No males of this species have been observed. 
Habitat. Deep water (100 to 110 fathoms) to the east of 
Hope Island, very rare. Only one or two specimens of this 
distinct species have been observed by us. 
Delavalia arctica, T. Scott. 
1899. Delavalia arctica, T. Scott, “ Crust. from Franz-Josef Land,” 
Journ. Linn. Soc., Zool. vol. xxvii. p. 98, pl. v. fig. 14, pl. vi. 
figs, 7-11. 
One or two specimens of this recently described Delavalia 
were obtained in a shore-gathering from the east side of 
Kolguev Island, collected on June 12th, 1898. 
Canthocamptus staphylinus (Jurine) . 
This widely distributed species was moderately common 
in a gathering from a large inland pond near Kostyn Point, 
Novaya Zemlya, collected on June 18th. 
Canthocamptus palustris, G. S. Brady. 
This species, which was very rare in the gathering 
examined, was collected in a pond about one mile inland, on an 
