580 



and attenuated, lateral corners small, rounded, postantennal ones forming 011 

 each side a rather deep triangular lobe, edge between both very slightly 

 concave. Anterior pairs of coxal plates much deeper than the corresponding 

 segments; 1st pair obliquely expanded distally, with the anterior corner 

 somewhat projecting, especially in the male ; the 3 succeeding pairs rounded 

 quadrangular in form ; 5th pair with the anterior lobe very large and deep, 

 obtusely truncated at the tip. Last pair of epimeral plates of metasome 

 obtusangular at the lateral corners. Eyes very small, rounded oval, and 

 placed close to the lateral corners of the cephalon, pigment dark red. Superior 

 antennae in female exceeding half the length of the body, 1st joint of the 

 peduncle about the length of the 2nd, and armed at the tip posteriorly with 

 a small spine, 3rd joint scarcely half as long as the latter, flagellum very 

 slender, attaining twice the length of the peduncle, and composed of numerous 

 articulations provided with short bristles; those in male generally consider- 

 ably shorter, with the flagellum but little longer than the peduncle. Inferior 

 antennae in female much more strongly built than the superior and not 

 nearly so much elongated, last joint of the peduncle shorter than the 

 penultimate one, flagellum about half the length of the peduncle; those in 

 male very strong, subpediform, and scarcely shorter than the superior. 

 Anterior gnathopoda in female with the carpus slightly expanded below, 

 propodos somewhat longer, and oblong oval in form, with the palm somewhat 

 oblique, and defined below by an obtuse angle; those in male of almost 

 exactly the same structure as that in the female, though a little larger. 

 Posterior gnathopoda in female but little larger than the anterior, with the 

 carpus produced below to a narrow setiferous lobe, propodos oval in form, 

 with the palm defined below by a distinct angle carrying a small spine; 

 those in male considerably larger than in female, but otherwise of a very 

 similar structure, propodos densely setous at the tip, with the palm somewhat 

 flexuous, and defined below by a rather projecting angle. The 2 anterior pairs 

 of pereiopoda with the basal joint not much expanded; the 3 posterior pairs 

 having the propodal joint slightly widening distally, and armed on the anterior 

 edge with a row of small spines, the tip being provided with a dense fascicle 

 of diverging bristles, basal joint of antepenultimate pair obliquely rounded 

 and broader than that of the last 2 pairs. Last pair of uropoda with the 

 basal part rather broad, and armed at the end superiorly with a transverse 

 row of 4- 5 strong spines, outer ramus sublamellar, and armed at the tip with 

 strong, recurved hooks, inner ramus somewhat narrower, with 2 lateral and 1 

 apical spine, besides a dense fascicle of bristles. Telson flattened, nearly as 

 long as it is broad at the base, and slightly tapering distally, tip obtusely 

 rounded, with a small tuberculiform projection on either side, within which 



