( 544 ) 



nnmerons than in A', hi/paretes. The seventh terp:ite bears only one short bristle 

 below the long antepygidial one. The seventli sternite is as broad as in A'. h;/paretes, 

 bat is more rounded and is not longitudinally striated like the eighth tergite, but 

 vertically, the lines on the apical area of the segment being very close together. 

 The eighth tergite has abont a dozen small bristles above the stigma and four to 

 eight below it ; its ape.^ is more ronnded than in A'. In/paretes and hippia. The 

 bristles on the ventral portion of this sclerite agree with those of A', /ii/paretes, 



Fig. 16.—Xi2)Mi>J>sylla ajiriona. 



except that there are less on the inner surface. There is also no essential 

 difference in the anal segment between these two species. The receptaculum 

 seminis likewise is nearly the same as in hyparetes. 



3 ? ? from Mt. Kenia, British East Africa, December 14 and 15, 191U, off 

 Tachyoryctes spec. 



21. Listropsylla dolosus Hotbs. (1907). 



?. Lhtropsylla dolosus Rothschild, Ejit. Mo. Mag. (2) xviii. p. 175. no. 2 (1907) (Kikuyu Escarp- 

 ment Brit. E. A.). 



Mr. Kemp obtained both sexes of this species. The 6 almost exactly agrees 

 with L. stygius Roths. (191)8), described as Ceratophyllus stygius in Ent. Mo. Mag. 

 (2). xix. p. 77. no. 3. t. 1. fig. 3 (1008) from a single 6 collected by A. F. B. 

 Wollaston on the Rnwenzori Mts. The " finger," however, is slightly dift'erent in 

 the two forms, being broader in stygius than in dolosus. In dolosus the long 

 ventral bristle of the " finger" is placed at three-fifths, and in stygius at two-thirds, 

 i.e. the distance from the base of the " finger " to the bristle is in stygius twice as 

 long and in dolosus half as long again as the distance from the bristle to the apex 

 of the " finger." The two insects are presumably geographical forms of the same 

 species. Both in dolosus and stygius the ventral genal margin bears some short, 

 flat, cordiform teeth, and the first luidtarsal segment is twice as long as the 

 second. 



