114 



antennae a small rostriform projection, lateral corners drawn out to large 

 somewhat deflexed linguiform lobes. Anterior coxal plates rather large, in 

 female fully twice as deep as the body, in male somewhat less deep; 4th 

 pair in female considerably expanded in their inferior part and angularly 

 produced below the deep posterior emargination ; 5th pair quadrangular, about 

 as deep as broad, with the posterior edge slightly concaved. Last pair of 

 epimeral plates of metasome not at all produced at the lateral corners. Eyes 

 oval, somewhat larger in male, pigment reddish with an opaque white coat- 

 ing. Superior antennae in female scarcely longer than the cephalon and the 

 1st segment of mesosome combined; 1st joint of the peduncle very large, com- 

 pressed, carinated dorsally and jutting out at the end anteriorly as an ob- 

 tusely acuminated projection advancing over the succeeding joint, which forms 

 a similar but much smaller projection; flagellum much shorter than the 

 peduncle and composed of but 7 articulations, the 1st of which equals in 

 length the 2 succeeding ones combined; accessory appendage quite wanting. 

 Same antennae in male a little larger than in female, with the 2nd peduncu- 

 lar joint scarcely produced anteriorly, flagellum 9-articulate, with the 1st 

 joint very large and densely clothed with sensitive bristles. Inferior antennse 

 in female considerably shorter than the superior, penultimate joint of the 

 peduncle much larger than the ultimate one and slightly produced at the 

 end anteriorly, flagellum very short and 4-articulate. Epistomal plate very 

 large, nearly rectangular. Anterior gnathopoda with the basal joint about 

 the length of the remainder part of the leg, propodos shorter than the carpus 

 and not at all expanded distally. Posterior gnathopoda extremely slender; 

 propodos exceeding the half length of the carpus, oblong triangular, with 

 two transverse rows of strong setae near the base of the dactylus. Posterior 

 pereiopoda rather robust, basal joint of the 3rd pair rounded, that of the 2 

 succeeding ones irregularly oval, constricted near the end; meral joint in all 

 rather expanded and finely ciliated on the posterior edge. Last pair of uro- 

 poda in female with the rami nearly linear in form, the outer somewhat 

 longer than the inner and without any trace of marginal bristles; those of 

 male lanceolate and considerably expanded at the base. Telson exceedingly 

 narrow and elongate, nearly 3 times as long as broad at the base, gradually 

 tapering to the conical tip ; cleft very narrow, fissure-like, and extending far 

 beyond the middle. Colour a chalky white, each segment having dorsally a 

 small orange-coloured patch, more expanded in male. Length of female 7 

 mm., of male 8 mm. 



EemarJcs. - - This is a very pretty and easily recognizable form, though 

 one which shows considerable differences in the two sexes, a fact that 

 indeed has led Sp. Bate to describe the species under two different names, 



