83 
Remarks . — This family is founded upon a single genus, Campylaspis G. 0. 
Sars, which, however, in several respects, and especially in the structure of the oral 
parts, differs so materially from the other known Cumacea, that it should not pro¬ 
perly be referred to any of the above-recorded lamilies. Dr. Bonnier has recently 
established another genus, Procampylaspis, to include a very remarkable Cumacean 
taken in the Bay of Gascogne; but I regard it as very questionable, if this genus 
in reality is referable to the present family. In some respects it seems to me 
to approach nearer to the Nannastacidce. 
Gen. Campylaspis, G. 0. Sars, 1864. 
Generic Characters .— Body in female short and compact, in male conside¬ 
rably more slender. Carapace of enormous size, and more or less bulging behind 
over the exposed segments of trunk, its anterior part more or less exserted, and 
terminating in a comparatively short pseudorostral projection, subrostral corners 
very slight or wanting, lower edges af carapace smooth throughout. The first 2 
pedigerous segments very narrow, and generally elevated dorsally to thin pro- 
curved lamellae, epimeral plates of the 3 succeeding ones rounded and extended 
laterally. Caudal segments, except the last, exhibiting laterally, in female, a pro¬ 
jecting nm, in male a deep groove, to receive the flagellum of the inferior 
antennae. Superior antennae with the inner flagellum uniarticulate, knob-like. 
Inferior antennae in female tuberculiform, in male well developed, with the penulti¬ 
mate joint of the peduncle distinctly defined, and clothed with very long sensory 
filaments, flagellum. extremely slender, with elongated articulations. Anterior lip 
unusually large, helmet-shaped, conically produced in front; posterior lip very 
delicate, with the lateral lobes quite membranous. Mandibles with the body 
slightly expanded inside, masticatory part distinctly incurved, and having the 
cutting edge strongly dentated and somewhat oblique, with an appendicular plate 
on the left mandible, and in both mandibles a restricted number of spiniform 
set.se; molar expansion very narrow, styliform. Anterior maxillae very strong, with 
both the masticatory and basal lobes abruptly incurved, and armed with strong, 
partly denticulated spines, palp long and narrow, with one or two apical setae. 
Posterior maxillae imperfectly developed, each forming a simple triangular plate 
with a limited number of simple bristles at the tip. First pair of maxillipeds 
with the meral joint lamellarly expanded, terminal part quite rudimentary, being 
