RHAPHIDOLABIS. 285 



description, whenever I was not sure whether a character would 

 be likewise applicable to R. Jiaveola, of which I could compare 

 only dry specimens, I have taken care to mention that this cha- 

 racter belongs to the typical species. 



The eyes are distinctly pubescent, with a rather broad front 

 between them above, and more closely approximated on the under 

 side of the head ; seen from the side, the front of B. ienui])es 

 shows a distinct bump behind the antenna3, which is much less 

 visible in dry specimens. The rostrum is short ; the palpi {B. 

 tenuipes) short, joints stout, except the basal one, which is 

 attenuated. Antennae 13-jointed (I have counted the joints of a 

 fresh specimen of R. tenuipes); short ; if bent backwards, they 

 would not reach much beyond the collare ; joints of the flagellum 

 oblong, clothed in the male {R. tenuipes) with a dense, delicate 

 pubescence, and the alternate ones with short verticils. Collare 

 well developed, rather broad, and with a neck-like prolongation 

 towards the head ; the mesonotum rather gibbose above it ; 

 thoracic suture well marked. The feet are very long and slender 

 (especially in R. tenuipes) ; the spurs are exceedingly short, and 

 may be easily overlooked ; the ungues are very minute ; the em- 

 podia distinct (for the proportions in length of the tibise and 

 tarsi, compare the description of the species). The wings (Tab. 

 II, fig. IT, wing of R. tenuipes) are a little longer than the 

 body ; comparatively narrow in R. tenuipes ; broader in R. 

 fiaveola ; the tip of the auxiliary vein is almost opposite the tip 

 of the fifth longitudinal vein ; the subcostal cross-vein is at one- 

 third of the length of the wing, a considerable distance before 

 the origin of the second vein, and but a little more distant from 

 the root of the wing than the anal angle ; the praefurca is com- 

 paratively short, and very much arcuated ; it is much shorter in 

 R. tenuipes, where its origin is nearly opposite the tip of the 

 sixth vein (a little anterior to it) ; in R. fiaveola the origin of 

 the second vein is opposite the tip of the seventh vein, and the 

 prsefurca is therefore a little longer. The small cross-vein is 

 opposite the tip of the sixth longitudinal vein {R. tenuipes), 

 or a little anterior to it {R. fiaveola) ; the second submarginal 

 cell is of the same length with the first posterior cell (or only a 

 trifle longer in R. tenuipes) ; the first submarginal cell is a little 

 shorter than the second, its petiole being shorter than the great 

 cross-vein; the course of the veins, bordering these cells, is 



