60 



Timoh nearer the base tlian does the latter. First 2)air of maxilke witli tlie 

 masticatory lohe almost transversely truncated at the tip and armed with 

 sti'ong denticulated spines, tlie l)asal lobe elongated, tapering, with 2 small 

 apical setae; palp normal. Second pair of maxillae with lioth lobes elongated 

 and narrow, setons at tlie tip only. Maxillipeds with the masticatory lobe very 

 large, oval, slightly crennlated on the inner edge, palp comparatively small. 

 Anterior gnatliopoda short and stont, subcheliform ; propodos truncated at the 

 tip, with a distinctly defined palmar edge ; dactjdns short and cnrved. Posterior 

 gnatliopoda slender, propodos slightly produced beneath the minute dactyliis. 

 Pereiopoda comparatively short, basal joint of the 3 posterior pairs very 

 large and laminar. Last pair of uropoda in female ' scarcely reaching beyond 

 the preceding pair, rami partly denticulated at the edges ; in male much 

 larger, with the inner edge of both rami jn'ovided with phunose setae. Telson 

 comparatively small, not reaching beyond the basal part of the last pair of 

 nropoda, and more or less deeply incised posteriorly. 



llcmarlcs. — The present genus has I^een established by Boeek in 

 order to include some species formerly referred to the genus Anonyx but 

 differing materially in the structure of the oral parts. The genus would 

 seem to include numerous species from different parts of the Oceans. Besides 

 tlie 5 northern species here described, 3 new species have been recorded by 

 the Rev. Mr. Stebbing from the Challenger Expedition, 2 of which, however, 

 itiay more properly be referred to the genus Orchomenopsis to be described in 

 the sequel ; and of the .several exotic species referred by earlier aixthors 

 to the genus Anonyx some may perhaps on closer examination be found to 

 belong to the present genus. 



IS. Orchomene Batei, (1. 0. Sars. 



(I'l. -2). 

 Orchnmpnp Batei, G. 0. .Sars, Oversigt af Norges Criistaceer, I, p. 81. 

 Syn : Anonyx Eduiinlsii, Sp. Bate (not Kroyer). 

 ? Anonyx molanophthalmus, Norman. 



Body more slender than in the other species, especially in the male. 

 Cephalon with the lateral corners rather projecting, in female In-oadly rounded, 

 in male narrow linguiform. Coxal plates of moderate size, the 4 anterior 

 pairs about twice as deep as the body, 5th pair broader than they are deep. 

 Last pair of epimeral plates of metasome nearly rectangtilar, posterior edge 

 irregularly and minutely crennlated. First segment of urosonie with a slight 

 dorsal indentation at the liase, more distinct in the male. Eyes oval or 

 slightly reniform, much larger in male than in female, pigment (in adult 



