~ 4908—1902. No. 18.] CRUSTACEA. 99 
formed spine originating with a broad lamellar base. Last pair of legs, 
as usual, much smaller than in female, distal joint oval in form and 
somewhat narrowed towards the end; inner expansion of proximal joint 
rounded off at the end, and provided with only 2 unequal sete. 
Length of adult female 0.92 mm. 
Remarks. — This species belongs to the section of the genus in 
which both rami of the 1st pair of legs are distinctly prehensile and 
built upon a type somewhat similar to that in the genus Dactylopusia. 
It is, however, quite distinct from any of the known species. In only 
one of these, A. nasutus, Borcx, are the anterior antenne composed, 
as in the present species, of 9 articulations; but from this species 
it differs conspicuously both in the greater length of the outer ramus 
of the ist pair of legs, and in the shape of the distal joint of the last 
pair of legs in the female. . 
Occurrence. — This well-marked species was found not unfre- 
quently in 3 of the bottles examined. 
106. Amphiascus minutus (Cavs). 
Some few specimens of a small Amphiascus, apparently belonging 
to this species, were found together with the preceding one. 
107. Amphiascus congener, G. O. Sars, n. sp. 
(Pl. VIII, figs. 1—4). 
Specific Characters. — Female. Body rather slender, almost 
cylindrical in form, or only very slightly attenuated behind. Rostrum of 
moderate size and somewhat obtusely pointed at the tip. Urosome 
nearly attaining the length of the anterior division, last segment a little 
shorter than the preceding one. Caudal rami of a similar form to that 
in A. latifolius, inner medial seta somewhat obliquely dilated at the 
base and scarcely longer than the urosome. Anterior antenne of mode- 
rate length and, as usual, composed of 8 articulations, 4th joint longer 
than 38rd, terminal part not attaining half the length of the proximal 
one. ist pair of legs with the rami less pronouncedly prehensile than 
in A. latifolius and very unequal, the outer one being scarcely more 
than half as long as the inner, last joint nearly as long as the middle 
one and armed with 3 claw-like spines, and inside these with 2 genicu- 
lated setee; inner ramus with the 1st joint long and slender, carrying 
inside near the end a short seta, the 2 outer joints somewhat unequal 
in size, the last one being about twice as long as the preceding one and 
