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SOME NEW GENERA AND SPECIES OF SIPMONAPTEBA. 



By tiik Hon. N. CHARLES ROTHSCHILD, M.A., F.L.S. 



1. Xenopsylla astia spec. nov. (Fig. 1). 



d. Agrees with A', nnbicus liotbs. (1903) in nearlj' all details, with the excep- 

 tion of the genitalia. As in nuhicHS, chcopts and several other species, the frons 

 bears on each side only two sensory organs (pale dots), the third one being absent. 

 The occiput has one bristle towards the base of the antennal groove and another 

 above the centre. The hindco.xa bears three bristles posteriorly at the apex. 

 The bristles at the apex of the foretibia are thicker than in nuhtcus. Tiie 

 eighth abdominal sternite has seventeen to twenty bristles on each side. The 

 most distal one of the ventral bristles of this segment is mncli shorter and 

 thinner than the two preceding bristles, the new species agreeing in this character 

 with nubicus and differing from cheopis, which has no bristles distally to the 

 two long ones. 



The clasper bears two movable processes. The npper or inner one is long 

 and gradually narrows to the apex, which is rounded (Fig, 1, F'). The second 



Fig. 1. — Clasping organs of Xcitop&tjUa astia ^J. 



process (F-) is almost the same as in A', cheopis, the upper edge being convex 

 and the lower concave. One of the bristles of this process is much longer 

 than the others. In the type sj)ecimen only seven bristles are visible on this 

 process. In a second specimen the process has a slightly different position, 

 presenting its up]ier snrface and hence ajipearing broader. In this specimen 

 there are eight liristles. 



The ninth sternite resembles tlutt of A', nuhiras, but is distinctly broader, 



