322 Mr. A. S. Hirst (.// a 



stria' aro vory ilistinctly shorter aiil widor apirf than those 

 of" a. iKiunetcnsis, Mars., ami rotiiudndi.'i, Kii^cl, ami inci't 

 more obtusely in front. 



Exco|)t fur the cliaraclors given above this species is siinilir 

 to rotumfiifus. 



Uab. Yunnan. 



XX .Will. — On (I iieir S/^ecirs of Ki\YSc\ui\ from Tibet. 

 13y A. S. HiKST. 



Karschia libelana, sp. n. 



J . — Colour. Cephalic and thoracic segments pale yellow, 

 the cephalic plate being tinged with brown in the anterior 

 and lateral parts ; ocular tubercle dark. Abdomen greyi.sh 

 white; the tergal plates black; ventral surface of this part of 

 the body marked laterally with a longitudinal series of dark 

 spots. Dorsal surface of man(lil)le ornamented with three 

 dark longitudinal stripes ; tibia, metatarsus, and tarsus of 

 palp, together with the corresponding segments of the fourth 

 leg, infuscate dorsally, the remaining segments of these 

 appendages and the other legs being light yellow in colour or 

 but little darkened. 



Miindi1>le. Edge of upper finger of mandible with thirteen 

 teeth; tlie tirst, third, fourth, sixth, seventh, ninth, tenth, and 

 eleventh from the anterior end being of rather large .size, the 

 others small. Lower finger bearing five teeth, of which the 

 posterior three are minute. 



The two main bristles of the inner side of the mandible are 

 long, slender, and provided throughout the greater part of 

 their length with a ventral row of minute hairs, whicli are 

 absent from the basal part (fig. 2). 



Flagellum long and spiral, retained in position by a hook 

 or thorn placed above it and by a long whip-like seta below ; 

 a small spine ])resent on the lower surface towards the 

 terminal portion, which is long and very slender ; otherwise 

 the fiagellum is smooth (fig. 2). 



Palp. Tarsus anil metatarsus of palp furnished below with 

 long and slender thorns, which are six in number in the case 

 of the tarsus. Metuiar.sus on the inner side with many 

 minute tufted hairs. 



Abdomen. Third abdominal segment with many (over 

 twenty on each side) .s»t;e arranged in several irregular rows 

 towards the hinder edge of the ventral surface. Posterior 



