A REVISION OF THE ETHIOPIAN DREPANIDAE (LEPIDOPTERA) 131 



light speckling of greyish brown ; in one paratype the ground is almost completely 

 obscured with dark greyish brown except for the posterodistal part of the hind wing ; 

 and in the second paratype the hind wing is entirely dark greyish brown (except for 

 wing markings), while the fore wing is similarly coloured except for a pale yellowish 

 brown area distal to the end of the cell and anterior to Cu lh . 



Distribution. Known only from eastern Madagascar. 



Material examined. Type. Holotype $, Madagascar Est, env. de Perinet, 

 foret d'Analamazoatra, 910 m., 27. xi. 1954 (Viette) ; Drepanidae genitalia slide 

 No. 603 ; in the Museum national d'Histoire naturelle, Paris. 



Paratypes. Museum national d'Histoire naturelle, Paris. E. Madagascar : 1 <$, 

 env. de Perinet, foret d'Analamazoatra, 910 m., 18.iii.1955 (Viette) ; 1 <$, Sambava, 

 Marojejy Ambinanitelo, 500 m., xii.1958 (Griveaud). 



Crocinis tetrathyra (Mabille) comb. n. 

 (Text-figs. 216-218 ; PI. 13, fig. 324) 



Drepana (Gogane) tetrathyra Mabille, 1899 : 724. 



Drapena tetrathyra (Mabille) ; Gaede in Seitz, 1927 b : 289. 



Gogana tetrathyra (Mabille) ; Gaede, 1931 : 12. 



Description. <J. Palp, front of head and narrow band bordering posterior margin of eyes 

 reddish brown or brown ; vertex of head pale buff or reddish buff, each scale tipped with white. 



Dorsal surface of thorax pale buff or reddish buff, each scale of anterior part of vestiture tipped 

 with white ; ventral surface very pale buff. Front surface of fore trochanter and femur reddish 

 brown or greyish brown, front surface of tibia and tarsus pale brown or pale buff ; front surface 

 of remaining legs pale brown or pale buff, as for inner surface of all legs. 



Ground-colour of both wings very pale slightly yellowish grey or very pale buff, usually only 

 lightly speckled with dark brown. Colour-pattern of wings as in Plate 13, fig. 324. Upper 

 surface of fore wing with trace of sub-basal fascia ; trace of diffuse antemedial fascia in some 

 specimens ; dark brown or black discocellular spot, and usually posterior cell-spot ; sometimes 

 with small hyaline patch immediately distal to end of cell between M 2 and M 3 , another between 

 M 3 and Ci< la , and larger patch between Cw, a and Cu^ ; latter hyaline patch usually present ; no 

 patches in two examples ; oblique, pale buff, postmedial fascia, white near apex, bordered 

 proximally by brown and distally by yellowish brown ; two dark brown or black streaks at 

 right-angles to postmedial fascia usually present at costa (see Plate 13, fig. 324). Upper surface 

 of hind wing with trace of sub-basal fascia ; usually well-marked antemedial fascia continuous 

 and concolorous with postmedial fascia on fore wing ; dark cell-spots (as on fore wing) sometimes 

 present. Under surface of both wings pale buff, lightly speckled with brown, but middle of fore 

 wing slightly darker and pinkish as for band along outer margin in hind wing. 



o* genitalia (Text-figs. 216-218) : uncus slender, vincular processes as in figure ; aedeagus 

 stout, nearly straight on side opposite point of entry of ductus seminis ; eighth abdominal 

 sternum unmodified except at posterior margin ; eighth tergum well sclerotized in anterior 

 region. 



$. Not known. 



Measurements. A.P.R. : <$. 15. Wing : <$. 12-5, 120-130 mm. (10). 



Discussion. Some specimens of this species are separable externally from the 

 closely related spicata and from licina by the presence on the fore wing of two well 

 marked, dark, costal streaks ; and most specimens are smaller than nearly all the 

 examples of spicata and licina studied. A reliable diagnosis of tetrathyra can only 

 be made, however, by examining the shape of the uncus and vincular processes. 



