REVISION OF AFRICAN SPECIES OF CLEORA 13 



27 (26) Vesica with two cornuti fused at base, the longer finely or coarsely scobinate for 



varying distances to and including apex, which may be tapered, truncate or 

 dilate .......... 28 



Vesica with two cornuti fused at base, the longer usually smooth, but if scobinate 



only lightly so and always smooth in apical eighth .... 35 



28 (27) Longer cornutus coarsely scobinate, scobination extending basad from apex, 



but not into basal half ; arm of sacculus not scobinate ... 29 



Longer cornutus of even width, slightly arcuate and finely scobinate in apical 

 two-thirds ; arm of sacculus spatulate and densely but finely scobinate 

 (Text-figs. 141, 142) ...... radula (p. 104) 



29 (28) Apex of larger cornutus dilate to one and one-half times width at middle, 



apical perimeter with 8-10 spines ...... 30 



Apex of larger cornutus of even width or tapered . . . .31 



30 (29) Scobinate medial plate of gnathus broad and shallow, equal in width to cucullus; 



apex of sacculus truncate with a short digitate process inclined towards mid- 

 valve ; larger cornutus slightly sinuous (Text-figs. 90, 91) . . plax (p. 71) 

 Scobinate medial plate of juxta produced and narrowed, tip equal in width to 

 one-third width of cucullus ; apex of sacculus with short, triangular, mem- 

 branous projection at two-thirds ventral margin of valve ; larger cornutus 

 straight (Text-figs. 87, 88) ..... tulbaghata (p. 67) 



31 (29) Apex of aedeagus produced and narrowed by one-half, irregular in shape ; 



basal half of shorter cornutus bulbous, apical half slender and curved through 



45 (Text-fig. 79) . . . . . . dactylata (p. 60) 



Apex of aedeagus narrowed slightly and evenly rounded. . . .32 



32 (31) Apex of shorter cornutus curved through 45 ° and usually bearing 2-5 spines 



varying in size (Text-fig. 76) ..... dargei (p. 58) 



Shorter cornutus straight and tapered ...... 33 



33 (32) Sacculus with process developed at two-thirds ventral margin of valve. . 34 



Sacculus without process (Text-fig. 93) .... munda (p. 71) 



34 (33) Scobination of gnathus extending along basal part of subscaphium ; sacculus 



with curved, spatulate process at two-thirds ventral margin of valve, the 

 surface minutely pustulate and setose ; shorter cornutus one-half as long 

 as longer one (Text-figs. 81 , 82) ..... thyris (p. 62) 



Scobination of gnathus not extending along subscaphium ; a short, smooth 

 spatulate process from apex of sacculus at two-thirds ventral margin of 

 valve ; shorter cornutus one-third as long as longer one (Text-figs. 84, 85) 



nigrisparsalis (p. 64) 



35 (27) Mid-dorsal margin of valve with a heavily spined, semi-circular dilatation 



extending towards mid-valve, spining continuous with that of cucullus ; 

 apex of sacculus in form of broad, blade-like process (Text-fig. 97) 



lamottei (p. 73) 



- Valve not so developed ........ 36 



3° (35) O ne or both cornuti spined ........ 42 



- Both cornuti quite smooth ........ 37 



37 (36) Tip of uncus produced, tapered and depressed ; apical process of sacculus 



slight, about as long as diameter of mid-uncus ; two groups of setose, digitate 

 processes, one at mid-valve, one nearer ventral margin ; apex of juxta 

 broadly V-shaped and rugose ; gnathus slender (Text-fig. 103) rostella (p. 77) 



- Uncus, valve and gnathus not so formed ...... 38 



38 (37) Apical process on sacculus sclerotized and greater in length than diameter of 



uncus .......... -39 



- Apical process on sacculus membranous and shorter than diameter of uncus, or 



wanting .......... 40 



