REVISION OF AFRICAN SPECIES OF CLEORA n 



3 (2) Scobinate area extending to cucullus ; process from sacculus almost rhomboid, 



posterior dorsal angle produced in short, digitate form (Text-fig. 54) 



echinodes (p. 46) 



- Scobinate area separated from cucullus ; process from sacculus aculeate (Text- 



figs. 57, 61, 64) . . . . . . . . 4 



4 (3) Vesica with three cornuti, but without scobinate band (Text-fig. 65) 



panarista (p. 51) 



- Vesica with two cornuti and scobinate band (Text-figs. 58, 60) ... 5 



5 (4) Two smooth, tapered cornuti equal in length ; scobinate band equal in length to 



width of aedeagus ; aculeate arm of sacculus two-thirds as long as dorsal 

 margin of valve (Text-figs. 57, 58) .... raphis (p. 48) 



Two cornuti of unequal length, the longer tipped with four spines ; scobinate 

 band equal in length to shorter cornutus ; aculeate arm of sacculus one-half 

 as long as dorsal margin of valve (Text-figs. 60, 61) . . aculeata (p. 49) 



6 (1) Vesica with single cornutus, shallowly bifurcate at apex ; aculeate arm of 



sacculus parallel with and extending to cucullus (Text-figs. 16, 17) 



melanchorda (p. 24) 

 Vesica and sacculus not so formed ....... 7 



7 (6) Arm of sacculus three-fourths as long as dorsal margin of valve, apex incurved 



and densely spined but not covered by a membraneous fold from ventral 

 margin of valve ; aedeagus smooth ; no cornutus (Text-figs. 37, 38) 



anacantha (p. 34) 

 Sacculus and aedeagus not so formed ...... 8 



8 (7) Arm of sacculus partially or entirely covered by a setose, membranous fold from 



ventral margin of valve ; aedeagus with one or more cornuti . . 9 



Sacculus not so formed . . . . . . . .17 



9 (8) Arm of sacculus parallel with ventral margin of valve, apex incurved and bear- 



ing a cluster of spines . . . . . . . .10 



Sacculus not so formed . . . . . . . .12 



10 (9) Aedeagus smooth ; vesica with one tapered cornutus sub-equal in length to 



mid-width of aedeagus ; arm of sacculus three-fifths as long as dorsal margin 

 of valve (Text-figs. 39, 40) ..... epiclithra (p. 36) 



Apical third of aedeagus scobinate along left half of dorsal surface ; vesica with 



two or more cornuti . . . . . . . .11 



11 (10) Arm of sacculus three-fifths as long as dorsal margin of valve, with a short, 



semicircular process at base ; vesica with three weakly sclerotized cornuti 

 (Text-figs. 34, 35) ...... prosema (p. 34) 



Arm of sacculus nine-tenths as long as dorsal margin of valve, without basal 

 process ; vesica with two cornuti, broad based and strongly sclerotized 

 (Text-figs. 31, 32) . . . . . . . oculata (p. 31) 



12 (9) Arm of sacculus with bifurcate, claw-like apex ; aedeagus broadened apicad ; 



vesica with two tapered cornuti and a longitudinal scobinate band (Text-figs. 



22, 23) ........ cancer (p. 28) 



Arm of sacculus with simple, tapered apex ; aedeagus not broadened apicad ; 



vesica with two or three tapered cornuti . . . . .13 



13 (12) Arm of sacculus not extended beyond two-thirds ventral margin of valve, 



tapered and angled through 90 ° at middle (Text-fig. 4) ; endemic on island 



of Reunion ........ acaciaria (p. 16) 



- Sacculus not so formed, species not occurring on island of Reunion . . 14 



14 (13) Arm of sacculus parallel with and extending to four-fifths ventral margin of 



valve (Text-fig. 19) ..... papillifer (p. 25) 



Arm of sacculus arcuate or sinuous, tip extending to dorsal margin of valve . 15 



