( 566 ) 



species and tlie followinoj ones is even more prononnceil in reflected lifjlit tbau in 

 transparent light, tlie whole body of D. ecltinns and hirsutus having the appearance 

 of being densely covered with au armonr of small scales, while in the following 

 species only the dorso-ventral lines are visible. 



An imitation of small teeth occnrs in all the following species in the apical area 

 of the abdominal sternites, and is observed, as may incidentally be mentioned, io 

 many other Siphonajitera, e.g. Lcptopsijlla. 



32. Dinopsyllus longifrons spec. nov. (te.Kt-figs. 33 aod 34). 



cT S. On an average larger than the following species, but smaller than the 

 jjrevions ones. The frous is longer in the S than in any other known species, with 

 the exception of the one from Angola described as No. 39 of this paper. The 

 pronotnm, as a rnle, has three rows of bristles iu both se.xes, the abdominal bristles 

 are very unmerons, in the ? particularly on the basal sternite and eighth tergite, 

 and the cj has usually a comb on tlie first abdominal tergite. 



Head. — The frons, in the S , is very strongly curved (text-fig. 33) iu the region 

 of the frontal tubercle and almost straight farther down, the outline being nearly 



Fig. 3.S. — Dinopsyllus lonf/ijroiis. 



parallel with the row of genal spines. The vestigial frontal tubercle is situated at 

 two-thirds in the <} and in the centre or a little below it in the ?. The distance of 

 the tip of the first genal spine from the frontal oral corner is less than half the 

 length of the frons. There is a row of five or six bristles above the vestigial eye, 

 one longer bristle immediately below this row, and a long one farther down at some 

 distance in front of the third genal spine (counted from below). Numerous small 

 bristles varying iu number are placed on the frons from tbe vestigial frontal tubercle 

 downwards, besides five or six medium-sized ones, which are situated at and near 

 the frontal and genal edges. The occiput bears three rows of bristles, the last row 

 containing fifteen or sixteen on the two sides together. The proportional lengths of 

 the segments of the maxillary ]ialpus are 21-22, 15-17, 11-12, 1(1-17. The head 

 of the ? agrees with that of the <S, except iu the frons being much shorter, more 



