83 



Remark*. 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, diflers so materially from the other known Cumaeea, that it should not pro- 

 perly he referred to any of the above-recorded families. 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 Nannastaridce. 



Gen. CampylaSpiS, G. 0. Sars, 1864. 



ir Character*. 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, low r er 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 rim, in male a deep groove, to receive the flagellum of the inferior 

 antenna?. 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, flagelium 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 

 setae; molar expansion very narrow, styliform. Anterior maxilla 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 



