138 
and three ovisacs. JI found further in the marsupium of a female from the harbour of 
Godthaab (2—3 fathoms, sand with sea-weeds, collected by Th. Holm 3/vir 1886): one adult 
female, one male in a close wrapping of threads, and two ovisacs glued together; in the mar- 
supium of another female from the same locality were found: one adult female, one closely 
wrapped male, and six of the host’s own eggs; in a young female without marsupium, taken 
in a depth of ten to fifteen fathoms in that harbour were found: one small female, only 
‘34mm. in leneth and nearly as broad, on which, nevertheless, occurred two spermatophores, 
and a male, round which a few threads were spun, was also attached to it. 
REMARKS. It is an interesting fact, that the same Amphipod, Protomedeia fasciata 
Kr., has one parasite in Denmark and another very closely allied species in West-Greenland. 
The two parasitic species seem to be distinguishable from each other with certainty only by 
the differences between their males. 
21. Sphzronella longipes n. sp. 
(PI. VII, fig. 2a—2g). 
FEMALE. One single tolerably large, but flattened and ill-treated specimen has 
been found, which measures -73 mm. in length and ‘92mm. in breadth, and besides, several 
well preserved specimens, all of which, however, are but scarcely half-grown or recently 
hatched, so that the largest one (fig.2a) is not more than -46 mm. long and somewhat longer 
than broad, while a very small specimen, represented in fig.2d and fig. 2e, is only ‘26 mm. 
long, and the proportion between the length and breadth of this animal is as 7 to 4. The 
head is well defined. The frontal margin naked. Antennulz rather long and slender, with 
long terminal sete. Antennee 3-jointed, third joint shorter than the second (fig. 2c, c); terminal 
seta about the length of the two last joints combined. Mouth-border of medium breadth. 
Maxillulee with well developed additional branch. Maxillae with smooth basal joint. Maxil- 
lipeds rather long and slender; basal joint naked, second and third joints coalescent, last 
joint digitated at the end with three exceedingly short points. The sub-median skeleton 
with a somewhat narrow list inside the maxillee, naked all over; no transverse list between 
the head and the trunk. Lateral margin of the head naked. Trunk naked. Trunk-legs 
compared with those of the other species of this genus exceptionally good-sized, consisting 
of a proportionally rather long cylindrical joint, from the end of which proceeds a proximately 
thickened very long seta, three to four times the length of the joint, and besides another 
seta equal to, or somewhat exceeding the length of the joint. About the genital area no 
information can be given; in the small specimens it is not developed. The caudal stylets 
considerably shorter than the legs, each ending in three sete of unequal length, the longest 
of them almost equalling in length the short seta of the trunk-legs. 
MALE. Unknown. 
