CHUSTACKA — WIIITELEGGK. 



217 



strongly keeled, the succeedinf^ ones more or less flattened with 

 a pijL,'nientod marginal lino on each side. Pleon distinctly seg- 

 mented, shorter — telson excluded — than the width of the preced- 

 ing segment; the lateral margins of each segment are closely 

 applied to the sides and indistinctly defined. 



Telson longer than the pleon, three times as long as broad, 

 «qual in breadth to the terminal fourth ; at this point the sides 

 gi*adually curve inwards to the evenly rounded setose and slightly 

 crenated extremity. 



Eyes distinct, large, yellowish-brown. 



(Superior antennte slender, a little shorter than the inferior ; 

 first joint stout, twice as long as broad ; second joint about half 

 the length and slightly narrower than the first ; third joint twice 

 as long as broad, longer than the second ; flagellum equal in 

 length to the two preceding joints, consisting of four articulations, 

 of which three are subequal in length but gradually diminishing 

 in diameter to the fourth, which is very small. 



Inferior antennae having the basal joint as long as broad 

 constricted in the middle, with the distal border oblique and 

 slightly dilated ; second joint stouter and longer than the first, 

 about one-eighth longer than broad, and much broader than the 

 two following joints which are subequal in 

 size ; fifth joint the longest, tapering, twice 

 as long as broad. 



Flagellum consisting of five or six joints, 

 two of which are stoutish and distinct, the 

 rest are minute and scarcely distinguish- 

 able. The joints of both pairs of antennae 

 exhibit a few scattered hairs on their apical 

 borders, and each terminates in a small 

 tuft as long or longer than the ilagellum. 



First pair of legs moderately stout, about 

 one-fifth shorter than the succeeding pair, 

 basos and ischium subequal, merus trans- 

 versely sublunate, distal border concave 

 with a few setas on the superior extremity, 

 carpus subtriangular in outline, inferior 

 border minutely ciliate with a few long setse 

 at the distal end. Propodus ovate-elongate, pirst leg. 



palmar border double, the inner convex Fig. 17a. 



with a row of ten or twelve smooth setse, the outer slightly con- 

 cave and produced proximally into a small lobe ; the edge carries 

 a row of eight or nine smooth setae, which are scarcely half the 

 length of those on the inner aspect. 



