( ns) 



at loast the more strongl)- eliitinisod part, especially distally. Tiic anal torsite 

 bears on each side four small and two modcratoly Imi;,' bristles. 



Two 6 (i from Rangoon, Burma, taken oil' rats, December 4, 19<i7. 



Type in the British Museum. 



Acropsylla i^en. nov. 



?. The labial palpus consists of five segments. Eye reduced, non-pigmented 

 and i)laced far down (Fig. 2). Two spines at the genal edge, which is short. 

 Antennal groove open, continued to the vertex by means of a sutare and internal 

 incrassation. Club of antenna segmented all round, niui'Ii longer than broad. 

 I'ronotum with comb. Three antejjygidial bristles, of which the upper one is 

 short. First midtarsal segment a little shorter than second. Hindcoxa without 



Fig. 2 



Fig 3 



Fig. 2. — Head of Acrojmjlla ejihcma J . 



Fig. 3. — AlHlominal segments \\l. and VIII, and rcceptaciihim sominis of the same. 



comb of sjiincs on the inner surface. Fifth segment of all the tarsi with five 

 pairs of lateral bristles, the tirst pair ventral but not placed in between the 

 second jmir. 



The only species known to ns reminds one strongly of C/ii(ixto]iA>/l/a i/umac 

 Boths. (1904) by the pecnliar shape of the head. But in Cliiastopsylhi the 

 labial palpus consists of four segments only, the eye is pigmented and placed 

 much farther away from the geual spines, the hindcoxa bears a comb on the 

 inside and the fifth tarsal segment has only four pairs of lateral bristles. 



The new genus is one of the numerous derivations from Ci'rafop/ti/lhis, 

 a genus which may be considered a central branch of which Ctenojilithuliinis, 

 NeopsijUa, C/uastopsi/lla , etc., are olfslioots. 



