10 
Glen. 1 . Cuma, M.-Edw., 1828. 
Syn: Bodotria, Goodsir (male). 
Generic Characters .—Body of female less slender than in male. Inte¬ 
guments strongly incrusted, squamous. Carapace not at all vaulted above, slightly 
carinated along the middle, sides sculptured with one or 2 carime, pseudo-rostral 
projection short, but distinct. 1st pedigerous segment ^conspicuous, being al¬ 
most wholly concealed; 2nd segment very large. Eye distinct, much larger in 
male than in female. Superior antennae with the outer flagellum biarticulate and 
carrying 2 sensory filaments, inner flagellum quite rudimentary, knob-like. Infe¬ 
rior antennae in female with 3 plumose setae of the basal joint; those in male 
equalling the body in length. Posterior lip with the lateral lobes narrowly rounded 
at the tip and finely ciliated. Palp of anterior maxillae very slender, with 2 un¬ 
equal apical setae. 3rd pair of maxillipeds with the basal joint expanded at the 
end outside to a large Iinguiform lobe. 1st pair of legs not much prolonged; 
2nd pair with the basal and ischial joints coalesced; the 3 posterior pairs rather 
small, and but sparingly setiferous. Uropoda with the rami much shorter than 
the basal part, the inner one uniarticulate or biarticulate. 
Remarks .—This genus may be regarded as the type of the family Cumidse 
and indeed of the whole order, as from it the name generally' used has been 
derived. It is easily recognised from the other genera comprised in this 
family, by the greatly incrusted, squamous integuments, the form and sculpture 
of the carapace, and the almost wholly concealed 1st pedigerous segment. We 
know as yet of only 4 species, 2 of which belong to the fauna of Norway, and 
will be described below. 
l. Cuma seorpioides, (Mont,). 
(pi. i, ir, iii.) 
Cancer (Astacus) seorpioides, Montagu, Transactions of the Linnean Society, Vol. IX, p. 70, PI. VI, fig. 5. 
Syn: Cuma Audouini, M.-Edw. 
„ Bodotria arenosa, Goodsir (male). 
„ Cuma pusilla , G. 0. Sars. 
Specific Characters .—Body of female moderately slender, with the anterior 
division oblong oval in form, and, like the tail, slightly keeled along the 
back. Carapace about the length of the exposed part of the trunk, and exhibiting 
on each side, somewhat above the middle, a very conspicuous, horizontal carina 
extending from the lower side of the pseudo-rostral projection to the hind edge; 
