PLATE XVI. 
RHEUMATOBATES RILEYI. 
Fic. 1. Ventral view of male. Note the peculiar formation of an- 
tenne and hind femora. 
Fig. 2. Antenne of female. 
Fic. 3. Fore leg of Rheumatobates, inner view. 
Fig. 4. Dorsal view of tip of abdomen of female, dorsal abdominal 
wall removed to expose the base of the ovipositor. 
Fig. 5. The ovipositing device partly dissected. 
Fics. 6 and 7. Left side view of one of the drill parts. 
In Figures 4 to 7 the same letters are used to designate like parts. 
a. Dorsal abdominal plate. 
Ventral broad flat valve employed as sheath to the drill parts. 
The drill parts, flattened chitinous structures grooved to slide 
within d. 
d. Upper part of ovipositor parts. The heavily chitinized braces are 
shown at e. 
e. The chitinous braces of the dorsal pair of ovipositor parts. 
The ovipositor is made up of three pairs of shafts, a ventral broad flat 
pair serving as shields (b). These are attached at their upper end to (c), 
the drilling parts which are strongly chitinized thin plates grooved to 
slide within (d). Between the dorsal valves (d) is a membrane which © 
forms the dorsal wall of the egg tube. This is attached to (2). 
Fic. 8. Dorsal view of abdomen of female showing ova. There were 
eight well-developed ova. 
Fic. 9. Egg of Rheumatobates rileyi. 
(298) 
