35 
pseudorostral projection considerably shorter, antero-lateral corners blunted. 1st 
pair of legs with the penultimate and antepenultimate joints of about equal size, 
the latter with only a few very short setse outside; 2nd pair with the last joint 
scarcely longer than the antepenultimate one, and carrying about 8 unequal 
spines. 3rd pair of legs in male with 3 lanceolate appendages of the ischial joint, 
similar to those in the male of L. pallidus, but comparatively smaller. Uro- 
poda with the inner ramus about the length of the basal part, but shorter than 
the outer, its distal joint much smaller than the proximal, and linear in form, 
with from 6 to 8 spines, the apical one rather elongated; outer ramus with about 
8 ciliated setae. Colour whitish, with a faint olivaceous tinge. Length of adult 
female scarcely exceeding 3 mm., of male 3 V 2 mm. 
Remarks. — This is the smallest of the Norwegian species, and is, moreover, 
easily recognized, in the female sex at least, by the comparatively small, acutely 
produced pseudorostral projection, and the limited extent of the dorsal crest of 
the carapace. 
Occurrence.- —I have found this form rather frequently in the inner part 
of the Christiania Fjord, in depths varying from 30 to 60 fathoms, and have 
also occasionally met with it in many other places of the Norwegian coast as far 
as Vadso. Out of Norway, however, this form has not as yet been recorded. 
Gen. 2. EudOrella, Sp. Bate, 1867. 
Syn: Leucon , Kroyer (part.). 
„ Eudora, Sp. Bate. 
Generic Characters. —Body in all the known species slender and elongated, 
with the anterior division club-shaped and shorter than the posterior. Carapace 
comparatively small, but rather deep, quite smooth above, and subtruncate in 
front, without any distinct pseudorostral projection, the antero-lateral lappets as¬ 
cending perpendicularly, to meet with their tips in close approximation to the 
frontal lobe, the usual opening for the expulsion of the water from the branchial 
cavities being, of course, placed quite dorsally. Anterior edges of carapace 
more or less distinctly insinuated and dentated below, lower edges serrate in their 
anterior half. Not the slightest trace of any eye or even of an ocular lobe present. 
Superior antennae rather strongly built and coarsely setiferous, exhibiting in the 
middle, or between the 2 outer peduncular joints, a very conspicuous elbow¬ 
shaped bend, inner flagellum well developed, though consisting of only a single 
