4. PHYLLOUHINA. 129 



c'" Terminal erect leaf narrower than 

 the horseshoe, 

 c*. Frontal glandulaa- sac well deve- 

 loped. 



6. Upper margin of the erect leaf 



sinuate, front surface with 

 three prominent vertical 

 ridges ; forearm 3"-8 Ph. armigera, p. 135. 



7. Upper margin of the erect leaf 



convex or straight, vertical 

 ridges in front not well de- 

 fined ; forearm 2"-45 Ph. leptophylla, p. 136. 



d'"^ The terminal erect leaf wider than 

 the horseshoe. 

 d*. No frontal sac. 

 a. Front concave surface of the 

 terminal erect leaf divided by 

 one or more vertical ridges. 

 a'. With three secondary leaflets 

 external to the horseshoe. 



8. Wings from the ankles ; 



forearm 3"-4 Ph. diadema, p. 137. 



9. Wings from the metatar- 



sus ; forearm 2"'6 Ph. nicobarends, p. 138. 



/3'. With two secondary leaflets 

 external to the horseshoe. 



10. Wings from the tarsus : 



forearm 1"'45 Ph. pygmcea, p. 139. 



j8. Front concave surface of the 

 terminal leaf not divided by 

 vertical ridges. 

 j3'. With two secondary leaflets 

 external to the horseshoe. 



11. Wings from the ankles: 



forearm 1"'95 Ph. fuliginosa, p. 139. 



e*. Frontal sac distinct in males. 

 /3. Front concave surfa^ie of the 

 terminal leai' not divided by 

 vertical ridges. 

 ^'. With two secondary leaflets 

 external to the horseshoe. 



12. Wings from the tarsus : 



forearm l"-8o Ph. caffra, p. 140. 



y. Front concave surface of the 



terminal leaf divided by three 



more or less distinct vertical 



ridges. 



y. With two secondary leaflets 



external to the horseshoe ; 



thumb and foot very small. 



y". Wings from the tarsus or 



metatarsus. 



13. Horseshoe as wide in 



front as in the middle ; 



forearm l"-75; calca- 



neum 0"'3 Ph. galerita, p. 141. 



K 



