58 D. S. FLETCHER 



$. Similar to male, but underside of wings with broader and darker terminal bands, which 

 are fuscous (PI. 7, figs. 264, 265). 



$. Genitalia (Text-fig. 74). Lamella antevaginalis consisting of two broad, tongue-like 

 plates overlapping slightly medially ; colliculum shorter than broad ; posterior half of bursa 

 copulatrix ribbed and very weakly sclerotized ; remainder membranous, globular anteriorly. 



Measurements. $ $ 37~44 mm. 



In external appearance closely similar to C. oculata, but differing in the clearly- 

 defined ground colour proximad of the postmedial fascia. In the male genitalia the 

 two tapered processes on the sacculus and in the female genitalia the structure of 

 the sterigma are diagnostic. 



The close similarity between oculata and bicornis in colour and pattern is not 

 reflected in either the male or the female genitalia of the two species. Structurally 

 bicornis appears to have no close relative and is for the present placed arbitrarily 

 with those species in which there are well developed processes on the sacculus in 

 the male genitalia. 



Distribution (Map 9). Ivory Coast ; Nigeria ; Congo (Leopoldville). 



Holotype <$. W. Africa : Lagos, genitalia slide Geometridae No. 2281. 



Paratypes : Ivory Coast : Bingerville, 1-5.viii.1915 (G. Melon), 1 $ ; ibid., 

 5-7.viii.1915, 1 $. Nigeria : data as type, 12 £, 3 $ ; Ilesha, (L. E. H. Humfrey), 

 1 $. [Congo (Leopoldville)] : Stanleyville, 9.VL1948 (Dr. Faniel), 1 $ in Musee 

 Royal de l'Afrique Centrale. 



Cleora dargei (Herbulot) comb. n. 

 (Text-figs. 75-77 ; PI. 7, figs. 266-269 > Map 4) 

 Neocleora dargei Herbulot, 1961 : 493, fig. 2. 



6*. Vestiture : first abdominal segment white, remainder tilleul buff irrorate with bister ; 

 patagia edged with bister ; twin bister spots medio-dorsally on posterior edge of each abdominal 

 segment except first. Wings tilleul buff, suffused with drab and irrorate and patterned with 

 bister ; antemedial fascia on fore wing and postmedial fascia on each wing bister, the former 

 preceded, the latter followed by broad, snuff brown fascia ; veins warm buff distad of post- 

 medial fasciae, cubital and anal veins interruptedly warm buff to base (PI. 7, fig. 266). Under- 

 side white, suffused and patterned with bister (PI. 7, fig. 267). 



o*. Genitalia (Text-figs. 75, 76). Scobinate medial plate of gnathus narrowly rounded 

 medially ; juxta sclerotized in a Y-shaped pattern ; sacculus extending to one-half ventral 

 margin of valve with a short, tapered, apical projection and a setose, medial ridge ; when 

 closed valves viewed from ventral position, the marginal projections of the sacculus appear 

 triangular in form ; apex of aedeagus evenly rounded ; vesica with two elaborately spined 

 cornuti fused at base, one about one-half as long, the other one-third as long as aedeagus ; 

 the spining varies somewhat individually, but the longer cornutus is usually truncate apically ; 

 the shorter one is dilate at base and has the apex tapered and curved through 45 ° and bearing 

 usually 2-5 spines. 



9. Vestiture similar to that of male, but ground colour white. Wings white, patterned 

 similarly to male, but drab suffusion and bister irroration very light (PI. 7, fig. 268). Underside 

 white, suffused and patterned with bister (PL 7, fig. 269). 



9. Genitalia (Text-fig. 77). Lamella postvaginalis with posteriorly rounded medial plate ; 



