113 



sion veiy slight, palp extremely slender and originating close to the base of 

 the mandible. First pair of maxillse with the masticatory lobe not very 

 strong and nearly transversely truncated at the tiji, basal lobe attenuated, 

 bisetose, palp normal. Second pair of maxillse with the lobes moderately 

 elongate, the inner somewhat sliorter and much narrower than the outer. 

 Maxillepeds comparatively small, masticatory I'obe oblong oval and reaching beyond 

 the antepenultimate joint of the palp, the latter poorlj' developed. Anterior 

 gnathopoda rather slender, subcheliform, propodos narrow, with the palmar 

 edge concaved and defined below by a ijrojecting angle armed with 2 slender 

 spines, dactylus with a secondary denticle near the tip. Posterior gnathopoda 

 likewise very slender and onl^^ very sparingly setous, propodos produced be- 

 neath the dactylus to a digitiform projection so as to form a comjilete chela. 

 Anterior pereiopoda slender and feeble in structure, posterior ones with the 

 basal joint laminarly expanded. Last pair of urojjoda in female scarcely 

 reaching beyond the preceding pair, rami hardly setous; in male much larger, 

 both rami provided on the inner edge witli plumous setae. Telson conically 

 attenuated and deeply cleft. 



RemarJcs. — The present genus, established bjr Sp. Bate, is chiefly 

 characterised by the compact, dorsally carinated body, the peculiar structure 

 of the superior anteunse, as also of l)oth ])airs of gnathopoda, and by the 

 form of the telson. Besides the 2 northern species described in tlie sequel, 

 a third species, L. forum inifer inn (Stebbing), has been added from the Challenger 

 Expedition. 



51. Lepidepecreum carinatum, Sp. Bate. 



(PI. 38, fig. 2, PI. 39 fig. 1.) 

 Lepidepecreum carinatum, Sp. Bate & Westwood, British Sessile-eyed Crustacea, Vol. 2, 



Appendix, p. 509. 

 Syn: Auouyx longicornis, Sp. Bate (male). 

 » Lepidepecreum niirabile, Meinert (female). 



Body in female rather short and greatly compressed, dorsal carina 

 distinct along the whole mesosome and metasome, as also on the 1st segment 

 of urosonie, fonning on the latter and on the last segment of metasome a 

 large and compressed conico-acuminated projection. A lateral carina also 

 is present extending across the upper part of the coxal plates. Body of 

 male considerably more slender, with the metasome comparatively larger and 

 the 2 posterior dorsal projections somewhat smaller and less regular in form. 

 Cephalon in both sexes considerably longer than the 1st segment of meso- 

 some, somewhat constricted on the middle and foi'uiing between the superior 



