310 



nearly as Inn- as the 4 succeeding segments combined, rostral projection trian- 

 gular, acute at tlic tip. Kpimeral plates of the .'! succeeding segments rounded 

 off. Last pedi^eroiis segment rather short, but scarcely narrower than the preced- 

 ing segment. I'rosonie a little shorter than the anterior division, genital segment 

 about the length of the 2 succeeding segments combined, and some\\hat protuberant 

 lelo\\. last segment much larger than the preceding one. and haxing the anal 

 "perde rather small and perfectly smooth. Caudal rami very thick at the ba-e 

 and tapering somewhat distally. each with 2 successive bristles on the outer edge, 

 the di>tal one unusually long and slender, extending .generally straight outwards: 

 middle apical seta of normal structure, and scarcely longer than the urosome. 

 Anterior antennae about half the length of the cephalic segment, the 3 joints of 

 the proximal part of about equal si/e. terminal part scarcely longer than the last 

 joint of the proximal, and having some of the seta? rather strong and distinctly- 

 ciliated. 1'osterior antennae \\ith the distal joint a little shorter than the proximal, 

 and gradually widening towards the end: outer ramus comparatively small, 

 with the distal joint quite short. 1st pair of legs \vitli the joints of the outer 

 ramus of nearly equal si/e. the last one armed with 2 spines and 2 slender genicu- 

 late seta?; inner ramus fully as long as the outer, proximal joint rather broad, 

 with a slender seta inside, distal joint a little longer and much narrower, carrying 

 on the tip a strong claw-like spine and a slender seta. The 3 succeeding pairs 

 of legs with the terminal joint of the outer ramus much produced, being about 

 as long as the '1 preceding joints combined, and armed with .'! strong spines and 

 a small apical seta, inner edge of the joint in the 2nd and Mrd pairs carrying 

 a single seta near the base, in the 4th pair 2 setae, middle joint in this pair with 

 another seta inside, which is wanting in the other pairs. Inner ramus in 2nd to -1th 

 pairs very small, with a single apical spine: that of Ith pair quite rudimentary. 

 Last pair of legs forming each an obliquely trans\erse plate fringed with 1< 

 slemler setae, the outermost one attached to a knob-like prominence. 



Mali, as usual, smaller than female, and having the anterior antenna 1 

 \IT\ stroii-j|\ hinged. <i-art iculate. Inner ramus of 2nd and '!rd pairs with the 

 apical spine comparath el\ longer than in female. Last pair of legs of somewhat 

 -mailer size, but otherwise of much the same structure as in the female. 



' 'olour whitish LM' (I .\ 



Length "f adult female ii.:,:j mm. 



It' in" 1 1,-. This form may be easjl\ recogni/ed by its short, stout. 

 '\lindrical hod\ . and b\ the thick caudal rami. \\ith the very slender bristle 

 -pi iiiL'iii'j from their outer edge. 



