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Gen. 24. PseudOCyClOpS, Brady, 1872. 



Generic Characters. Body short and compact, with the anterior division 

 considerably tumefied. Cephalosome strongly vaulted, and projecting below in a 

 sharply pointed rostrum, which in the male is movably connected with the head. 

 Last segment of metasome rather small, but distinctly defined from the preceding 

 one. Urosome with the anal segment very small. Caudal rami short, with the 

 outermost seta spiniform. Eye distinctly developed. Anterior antennae scarcely 

 longer than the cephalosome, and composed of 15 to 18 articulations; right 

 antenna in male distinctly geniculate, with the terminal part 4-articulate. Posterior 

 antennas somewhat cyclopoid in shape, the distal joint of the inner ramus being 

 connected with the proximal one at nearly a right angle, outer ramus about same 

 length as the inner, and only 3-articulate. Mandibles with the palp distinctly 

 biramous. Maxillae with the inner ramus of the palp considerably produced. 

 Anterior maxillipeds rather compact, with all the digitiform lobes distinct, appen- 

 dages of terminal part comparatively small, setiform. Posterior maxillipeds 

 scarcely longer than the anterior and somewhat resembling those in the genus 

 Eurytemora. The 4 anterior pairs of legs rather powerful, with strong spines 

 outside the outer ramus. Last pair of legs in female with the natatory setae 

 much reduced in size, inner ramus short, biarticulate or triarticulate; those in 

 male somewhat asymmetrical, right leg the larger and hooked at the tip, inner 

 ramus lamellar. 



Remarks. This genus, as stated above, was placed by its founder, Prof. 

 Brady, in the family Misophriidas, apparently on account of some resemblance in 

 its external appearance to the genus Mlsophria. As subsequently shown by Dr. 

 Giesbrecht, it is however very different, not even belonging to the same division ; 

 and, as it also differs considerably from the other true Callanoids, its rank as 

 the type of a distinct family is fully justified. It is only to be regretted, that 

 the name of another Calanoid family, Pseudocyclopiidce, founded on the genus 

 Pseudocydopia of Scott, is so very like that of the present family. We know 

 at present of 3 species of this genus, one from the Bay of Naples, and 2 from 

 the Scottish coast. One of the latter is also found off the Norwegian coast, and 

 will be described below. 



