160 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vot xn 



[AGAPEMA COPAXOIDES Dyar. 



Plate LXXVI, fig. 4. 

 Ar/apema copaxoichs Dyar, Proc. U. S. Nat. Mus., 1912.] 



CERANCHIA Butler. 

 Ceranchia Butler, Ann. and Mag. Nat. Hist. [(5) II], 1878, p. 461. 



Nearly allied to Saturnia, but antennas broadly pectinated in both sexes; radial vein emitted 

 in male (but not in female) from fourth subcostal branch, with which it forms a fork, starting 

 from an apparently independent footstalk at upper angle of discoidal cell; wings hyaline. 



[The type is C. apollina, Butler, from Madagascar. All the species cited by Kirby are from 



Madagascar, except C. ( ?) mollis Butler, from Mombasa. C. ( ?) mollis becomes the type of 



Leucopteryx Packard.] 



LEUCOPTERYX Packard. 



[Leucopteryx Packard, Journ. N. Y. Entom. Soc, XI (1903), p. 248.] 



Imago. — The head is partially concealed by the high overhanging thorax; it is not promi- 

 nent ; the front unusually wide between the eyes. The antennas are wanting in my specimen. 

 The vestiture of the front short, fine, and wooly. 



Palpi not visible, apparently 1-jointed, short, feeble, and drooping. Body rather stout; 

 the vestiture short, the hairs very fine and rather short. 



Fore wings short and broad, not falcate; costa straight, a little curved toward the apex, 

 which (though broken off) appears to be rather obtuse and subrectangular; outer edge shorter 

 than the inner and slightly convex. Hind wings rather long, costa not very convex, apex 

 rounded, outer edge full, well rounded, inner edge rather long, extending a little beyond the end 

 of the abdomen. 



Venation: Closely similar to that of Heniocha terpischore; the first subcostal vein (IL_) 

 arising in the same position and ending just before the apex of the fore wing; the origin of the 

 semiindependent vein (III 3 ) is the same, and the discocellulars collectively made a slight 

 inward angle; in the hind wing they make a straight line. 



Markings: Ground color white and pearl ash gray; no definite lines on the wings of either 

 pair. On the fore wings a moderately large round discal spot, solid in the center except a narrow, 

 clear, linear cliink. On the liind wings no complete ocellus, but a subtriangular, dark, opaque 

 spot, with a slight linear chink or fissure. 



The type of this genus is Ceranchiat mollis Butler, Trans. Ent. Soc. London, 1889, p. 391, 

 PI. 12, fig. 5. I have had the opportunity, through the kindness of Dr. G. II. Dyar, of examining 

 a female from Tana River, East Africa, north of Mombasa, collected by the Chandler Expedition 

 for the United States National Museum. 



Geographical distribution. — Etluopian realm, eastern Africa, Mombasa and Tana River 

 north of Mombasa in British East Africa. 



This genus by its venation closely approaches the African species referred to Heniocha (H. 

 terpsichore) , but differs from any of that group in the shorter, wider fore wings, and the absence 

 of any transverse lines. The type of Mr. Butler's description is in the British Museum. 



LEUCOPTERYX MOLLIS (Butler). 

 Ceranchia (?) mollis Butler, Trans. Ent. Soc. London, 1889, p. 391, PI. 12, fig. 5. 



Imago. — One ? . Ground color of body and wings snow-white. Head and legs sable 

 brown; thorax snow-white; abdomen pale slate clay color. 



Fore wings on the basal third to half pale sable clay, dusted with white toward the 

 costa. Middle of wing including the discal spot snow-white shading toward the outer edge 

 into pale sable, the line of division between the clay and white very marked. Discal spot 

 (4 by 4 mm.) consisting of a large central black roundish spot, encircled with white, and an outer 

 reddish ring, in the middle a linear vitreous chink or crack. 



