212 G. 0. SARS, 



Descriiition or the Temale. 



The length of adult ovigerous specimens amounts to about 13 mm. 



The body (see fig. 1) is of moderately slender form and somewhat com- 

 pressed, with the metasome and urosome well developed and combined about 

 equalling the length of the mesosome. The segments of the latter division 

 are in most of the specimens quite smooth, with the back evenly rounded. 

 In larger specimens there is however (as indicated in the tigures here given) 

 not rarely found in the last segment a slight dorsal keel, which at the post- 

 erior edge is produced to a small dentiform projection. The segments of 

 metasome in all specimens are distinctly keeled, the keel being elevated to 

 rather large and compressed, posteriorly pointing dorsal projections termi- 

 nating in a very acute point. The last of these projections is generally the 

 "largest and of same form as the 2 preceding ones. The 2 anterior segments 

 of the urosome are each provided dorsally with a rather conspicuous, almost 

 cylindrical tubercle, transversely truncated at the tip, and carrying 4 strong 

 apical spines arranged in pairs and accompanied by a few delicate bristles 

 (see fig. 15). The anterior tubercle projects nearly at a right angle to the 

 longitudinal axis, whereas the posterior one is slightly recurved, both being 

 otherwise of the very same appearance. The last segment of the urosome 

 has on each side of the dorsal face a single small spinule. 



The cephalon (fig. 2) is fully as long as the first 2 segments of meso- 

 some combined, and has the rostral projection extremely small, nearly ob- 

 solete. The lateral lobes are somewhat projecting and rathei- broad, being 

 obtusely truncated at the tip and defined from the acutely produced post- 

 anteunal corners by a rather deep emargination encircling the globular 

 basal joint of the inferior antennge. 



The 4 anterior pairs of coxal plates are but little deeper than the cor- 

 responding segments, and rapidly increase in size posteriorly, the 1st pair 

 (see fig. 4) being rather small and scarcely at all expanded distally, whereas 

 the 4th pair (see fig. 6) are very broad, with the outer part much expanded 

 and forming below the rather deep posterior emargination a distinct, almost 

 right angle. 



The 3 posterior pairs of coxal plates are comparatively small and of 

 the usual shape. 



The epimeral plates of the metasome are rather large, especially the 2 

 posterior pairs, which both are produced at the lateral corners to an acute 

 point. 



The eyes (see fig. 2) are of moderate size and narrow oblong in form, 

 with a slight instriction in the middle, thus exhibiting a shape somewhat 



^Ha.-MaT, crp. 212. g* 



