72, CRUSTACEA COPEPODA. II. 
Male. — It is somewhat large (fig. 4 b) as compared with the female (fig. 4 a); the specimen drawn 
is 0.26 mm. long. Seen from below (fig. 4 f) its greatest breadth is situated off the base of the maxille; the 
head is longer than the trunk. In front of the antennulee the head is much produced, and most of the margin 
is strongly curved, without incisions; its most frontal part is equipped with fine hairs. Somewhat behind 
this margin the lower surface shows a small, sub-quadratic, chitinized plate with four small holes; besides 
all four angles of the plate are rounded and the margins incurved. — Antennulee about as in the female, 
excepting that the second joint is much shorter than any of the two others. — Antenne wanting. — The 
hairs on the border of the mouth of middle length. — Maxillule as in the female. — Maxille rather small; 
basal joint smooth, but many bristles are seen along the distal connecting membrane. — Mazxillipeds have 
the first joint rather long and moderately robust, its distal half is equipped with numerous hairs on the 
anterior side, and on the lower surface similar hairs are arranged in some four transverse rows; second and 
third joints fused, with the distal spine somewhat short and robust; terminal joint a little pubescent, acute. 
The submedian skeleton is moderately developed, but has at the base of the maxillipeds two pairs 
of well developed processes, the anterior outer pair about half as long as the posterior, rather long pair. — 
The lateral border of the head to somewhat in front of the antennulee with numerous rather long hairs. The 
entire trunk — excepting the most anterior part of the ventral surface — is clothed with rather long hairs, 
but at the limit between head and trunk a belt of extremely long hairs runs from the end of the protruding 
border of the head upwards on the side and across the dorsal surface. — The legs are well developed and 
both pairs nearly similar; each leg consists of a short and moderately thick, hairy sympod with two rami 
longer than the sympod, and each terminates in a very long and strong spine slightly marked off from the 
ramus; the outer ramus with its spine is a little longer than the inner one. — Fach caudal ramus is a small 
joint, about as long as broad, and terminating in a moderately long, thin spine. 
Ovisacs. — Only 2 ovisacs were found; they are very small, each with 9 eggs. 
Remarks. — This species is easily separated from the 5 other forms of Spheronella living in the 
marsupium of Cumacea and described by me in 1897. The male of S. votundata differs strongly by the simple 
shape of the front margin and the long thoracic legs; the female is as usual less characteristic, but differs 
in some easily observed particulars, as the frontal margin, the antennule, etc. 
Occurrence. — This parasite was discovered in the marsupium of Hemilamprops cristata G. O.S.; 
the hosts have not been taken by the “Ingolf” but by the “Thor” at the following place. 
South-West of the Feeroes: Lat. 61°08’ N., Long. 9°28’ W., 710—820 met., temp. 8°20; 3 females, 
2 males and 2 small ovisacs in the marsupia of adult females. 
C. Parasites on Isopoda. 
gt. Spheeronella curtipes H. J. H. 
1897. Spheronella curtipes H. J. Hansen, Choniostomatide p. 164, Pl. X, figs. 2 a—2 g. 
The male found on Janira Vilhelmine Steph. captured in I9gII is 0.92 mm. long and agrees with 
my earlier drawings and description of S. curtipes excepting one, viz. that the lamellar protuberance between 
the broad frontal border and each antennula seems to be naked, while it has short marginal hairs in the 
