74 CRUSTACEA COPEPODA. II. 
first joint more than half as long again as the remainder of the maxilliped and rather curved, naked; second and 
third joints completely fused, forming a single somewhat robust and curved joint; the claw rather short, slender, 
acute; below its insertion the usual spine, which is thick, short, very obtuse, with tiny bristles around the end. 
The submedian skeleton moderately developed. —- Lateral borders of the head scarcely developed, 
naked; somewhat behind the base of the maxillipeds the ventral side of the trunk has a number of sete 
mostly arranged in transverse rows, but no other sete could be discovered on the trunk. — Genital area 
(fig. 5 c) is a kind of transverse, chitinized ring much broader than long and with both the anterior and the 
posterior margin a little concave; besides the anterior and the posterior parts of the ring are united by a 
median longitudinal chitinized plate somewhat narrow near its middle; setee are wanting, but the caudal 
rami, which originate very near each other between the middle of the genital apertures on the ring, are 
very small, oblong and each with two small terminal bristles. 
Male. — A well-preserved specimen (fig. 5 d) is 0.275 mm. long and almost half as long again as 
broad; seen from below its greatest breadth is found at the base of the head which is about as long as the 
trunk. In front of the antennule the head is moderately produced, the margin broadly convex and even 
a little incurved at the middle, naked. — Antennule somewhat robust and of middle length, 2-jointed; first 
joint much longer than the second; the usual setee of very moderate length. — Antennee wanting. — Mouth 
rather small. — Maxillule with additional branch, as in the female. — Maxille middle-sized; first joint seems 
to be smooth; the claw acute. — Maxillipeds of medium length; first joint somewhat robust, beyond the 
middle with a transverse row of hairs on the lower and the anterior side; second and third joints coalesced, 
but the joint formed in this way is narrowed beyond the middle; the terminal joint, the claw, is acute with 
some very short sete or tiny spines along the concave margin; the spine below the insertion of the claw is 
oblong-triangular, acute. 
The submedian skeleton is moderately developed and without free posterior processes. — The lateral 
borders of the head from the antennule backwards are equipped with hairs of middle length; the entire 
trunk, excepting the most anterior part of its ventral surface, is covered with long hairs. — Trunk-legs and 
caudal rami wanting. 
Ovisacs unknown. 
Remarks. — The male is more similar to those of S. dispar and S. insignis, which live on Cumacea, 
than to the same sex of S. curtipes on species of Janira; it is easily distinguished from every other species 
hitherto known. 
Occurrence. — Taken by the “Ingolf”’ at a station in the cold area. 
East of Iceland: Stat. 105: Lat. 65°34’ N., Long. 7°31’ W., 762 fathoms, temp. = 0°8; in the 
marsupium of a specimen of Munna spinifera H. J. H. 1 female and 2 males. 
94. Sphzeronella Nannonisci n. sp. 
(Pl. V, figs. 6 a—6 b). 
Female. — The single specimen, which had deposited all its eggs, is nearly empty and quite small, 
being 0.44 mm. long and only a little more than half as broad as long (fig. 6 a), consequently very oblong- 
