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

 the mandible. First pair of maxillae with the masticatory lobe, not very 

 strong- and nearly transversely truncated at the tip, basal lobe attenuated, 

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

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

 Maxillepeds comparatively small, masticatory lobe .oblong oval ;md reach ing be \ <ni<l 

 the antepenultimate joint of the palp, the latter poorly developed. Anterior 

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

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

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

 likewise very slender and only very sparingly setons, propodos produced be- 

 neath the dactylns to a digitiform projection so as to form a complete chela. 

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

 basal joint laminaiiy expanded. Last pair of uropoda in female scarcely 

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

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

 attenuated and deeply cleft. 



Remarks. The present genus, established by tfp. Bate, is chiefly 

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

 of the superior antennas, as also of both pairs of gnathopoda, and by the 

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

 a third species, L. foraminiferum (Stebbing), has been added from the Challenger 

 Expedition. 



51. Lepidepecreum carinatum, Sp. Bate. 



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

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



Appendix, p. 509. 



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

 Lepidepecreum mirabile, Meinert (female). 



Body in female rather short and greatly compressed, dorsal earina 

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

 of urosome, forming on the latter and on the last segment of metasome a 

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

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

 male considerably more slender, with the metasome comparatively liirgcr and 

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

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

 some, somewhat constricted on the middle and forming between the. superior 



