H. Sauter's Formosa-Aiisbeute. Nycteribiidae. 



99 



a new species under the name sauteri. But after close comparison 

 with the actual type of parvula, kindly lent by Dr. R. Gestro, 

 I find that parvula and sauteri are identical. 



In this species the femora and tibiae are not nearly so much 

 broadened as in some species of the subgenus Listropodia (see Scott, 

 op. cit., fig. 14 — and cf. fig. 13). The 5th tergite of the <J, which 

 I figured as quite bare (op. cit., fig. 15), may sometimes have one 

 or two short bristles on its surface. The shortness of the <J anal 

 segment, and the shortness and straightness of the claspers, together 

 with their pale colour and lack of dark pigmentation at the apex, 

 are constant and characteristic features. 



Abdomen of the ?. In the $ the second tergite was figured 

 by me (op. cit., fig. 17) as quite bare on its surface, and in some spe- 

 cimens it is so: but in Speiser's type of parvula from Sumatra, 

 and in many of the Formosan specimens (perhaps the majority) 

 its surface is covered with very short scattered bristles. The long 

 bristles on the hind margin of the chitinous dorsal plate before the 

 anal segment (b. in Fig. 17, op. cit.) were figured as 4, but are 

 perhaps more usually 6, in number. 



My figure of the under surface of the $ abdomen (op. cit., 

 fig. 18) was somewaht misleading, as the abdomen of the specimen 

 was much shrunken. In a $ with distended abdomen it can be seen 

 that sternite 2 has three or four irregulär rows of short bristles 

 on its surface and long bristles on its hind margin: sternite 3 

 has two irregulär rows of short bristles on the posterior part of 

 its surface and long bristles on its hind margin: sternite 4 is 

 bare on the membranons portion of its surface, but has two darker 

 and more firmly chitinised areas, separated in the middle line, 

 and each bearing alternating long and very short bristles on its 

 hind margin: [my former description and figure were erroneous, 

 stating that sternites 3 and 4 were both represented by two 

 chitinous areas, whereas in reality only sternite 4 bears such 

 areas]. Sternite 5 is without bristles on its surface, but in a 

 specimen with very distended abdomen the alternating longer and 

 shorter bristles on its hind margin are seen to form a bisinuate 

 line, at either end of which is a small area darker and more firmly 

 chitinised than the surrounding membrane. Sternite 6 is short, 

 bare, and membranous, with longer and shorter bristles on its 

 hind-margin forming two groups, separated by a very small space 

 in the middle line. Just behind this median space are about 6 

 bristles standing in front of the genital opening. The anal segment 

 ventrally bears a pair of blunt protuberances, one on either side 

 of the anus, bearing short bristles and at their apices long bristles : 

 (here again my former description is erroneous, stating that the 

 anal segment bears two pairs of blunt protuberances, whereas the 

 anterior pair really consisted of the lateral ends of the hind margin 

 *of the 6th sternite protruding from the shrunken abdomen]. 



7* 8. Hell 



