The Nyinpli. 43 



Antennae seven-jointed; all legs with tarsi three- 

 jointed ; mask covering moutli ; legs formed 

 for running ; alxlomen rounded above. 



I. Mask s])oon-sha]ied : abdomen not greath' 

 lengthened nor much tapering towards 



base, hairy aiuuilaiiis. 



II. ]\Iask flat ; abdomen mucli elongated, 

 tapering considerably towards base 



a. Eyes large, in middle of side of head, 

 which is flat ; mask extending beyond 

 mid-legs ; lateral spines on segments 

 7 to 9 ; leg-base processes broad at tip, 

 enclosing a right angle (P'ig. 19) . . . . iinpcrator. 



b. Eyes rounded, at fore corners of head ; 

 mask extending to mid-legs ; lateral 

 spines on segments b to 9. 



1. Leg-base processes equal, 

 blunt, stout, not much sepa- 

 rated, anterior narrower. . . . tnixta. 



2. Leg-base processes equal, sharp, 

 long, bent outwards a little, 



the anterior one rather slender grandis. 



3. Leg - l)ase processes equal, 

 sln)rt, enclosing a riglit angle, 

 anterior smaller cyaiwa. 



4. Leg - base processes much 

 smaller than in cyauea (which 

 species the nym]')h resembles) ; 

 anterior half length of pos- 

 terior; body looked at from 



side much flatter than cyauea. jtiucea. 

 5- Leg-base processes triangular, 

 sharp, enclosing an acute 

 angle, anterior half length of 

 posterior isosceles. 



c. Eyes small at fore corners of head, 

 projecting in a bead-like manner ; mask, 

 extending about to mid-legs ; lateral 

 spines on segments 6 to 9 small ; 

 body slender; >ides of head sloping 

 much backwarcis ; leg-base processes 

 slightly separated, shar]5, anterior al^out 

 twice as long and half as wide as 

 posterior prateiise. 



