some Oriental Nycteril)ii<l;o. 229 



suddenly widened at the base, with short thorn-bristles along 

 tlieir outer margins towards tiic apex. 



Kolenati only figured the (^ , and as I am not aware that 

 the ? has been figured, figures ot' the dorsal and ventral 

 aspects ol" its abdomen are given here (Pi. XII. figs. 18, 19). 

 Dorsally, the basal teryite is bare exeept for some very short 

 bristles irregularly placed immediately iu front of its hind 

 margin and for longer and shorter bristles on the hind 

 margin. The conncxivum is covered with scattered short 

 bristles, except at its extreme base and in its apical portion, 

 which are bare ; behind the middle it bears two groups, 

 consisting each of about 5 very long strong bristles, those 

 of eacii group placed close together in a series running 

 obliquely backwards and outwards. On the anal segment is 

 a transverse series of 10 very long bristles, interrupted — in 

 some specimens, at any rate — l)y a slight gap in the middle. 

 A'entrally, the basal sternite is bare towards its base, but has 

 two or three irregular rows of short bristles towards its hind 

 margin; as in the ^ , the teeth of the ctenidium are strong 

 and close. On the connexivuai the short bristles are arranged 

 in rather irregular transverse series ; the anterior part bears 

 about 6 of these series, and 8 very long bristles, of which 

 those near the middle line are placed further forward than 

 the outer ones ; the arrangement is shown in PI. XII. fig. 19, 

 which is taken from a ? with abdomen greatly distended. 

 Behind these anterior series of short bristles is a short gap, 

 an area bare of bristles, extending across the abdomen. 

 Behind this gap are 6 more series of bristles, behind the 

 first three of which is an indication of another gap, though 

 this is much less marked than the anterior one. The hind- 

 most series has several of the bristles longer than the rest, 

 one towards either side of the abdomen being very long. 

 Behind the last series of bristles is a bare area of connexivum ; 

 under the genital opening is a more or less chitinous brown 

 area, with an indication of a longitudinal division into two 

 halves. Across the middle of it is a series of bristles, while 

 its hind margin is set with longer and shorter bristles, some 

 being very long. The arrangement is not so regular 

 in all specimens as in the one figured ; sometimes the 

 bristles on the surface are much more scattered. 



Figure 19 also shows the way in which the thorax is 

 narrowed, its sides " cut away/' so to speak, in front, which 

 causes the thoracic ctenidia to show very conspicuously in a 

 ventral view. 



Loc. Africa (Senegal, Eg[)yt) ; Comoro Islands (Grand 

 Comoro); Sumatra; Burma; Ceylon. 



