no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 161 



Hind wings snow white, pale sable hue on the outer edge. The discal spot one-half as large 

 as that on the fore wing, subtriangular, a little wider than long (2 by 2 mm.). 



Under side of the fore wings with the discal spot square, with no ring, but faintly edged with 

 white. Hind wings as above; no line beneath, but the whole wing pale clay-white toward the 

 inner edge; toward the costa and outer edge slate. 

 Expanse of wings, ? 80 mm. 

 Length of fore wings, $ 40 mm. 

 Breadth of fore wings, ? 22 mm. 

 Length of bind wing, $ 30 mm. 

 Breadth of hind wing, ? 22 mm. 

 Geographical distribution. — Tana River, East Africa, south of Mombasa (Chandler Expedi- 

 tion, 1892-93, United States National Museum) ; Mombasa ( British Museum). 



HENIOCHA Huebaer. 



Heniocha Huebner, Verzeichniss bek. Schmett., p. 157, 1822?. 

 Saturnia Moore, Trans. Ent. Soc. London, (3) II, p. 424, 1865. 

 Saturnia Maassen and Weymer, Beitrage z. Schmett., 1872. 

 Heniocha Butler, Annals and Mag. Nat. Hist., (4) XX, p. 462, 1877. 

 Saturnia Westwood, Oates, Matebele Land, p. 357, 1881. 

 Heniocha AuRrvnxrus, Oefv. Vet. Akad. Forh., XXXVI (7), p. 50, 1879. 

 Heniocha Rogenhofer, Verb.. Zool. Bot. Ses. Wien, XLI, p. 565, 1891. 

 Heniocha Kirby, Syn. Cat. Lep. Het., I, p. 769, 1892. 

 Heniocha Rothschild, Novitates Zool., II, p. 49, 1895. 



[According to Kirby H. apollonia is the type of the genus.] 



LARVA. 



AuRivrLLrus, Arkiv. Zool., II (1905), p. 34, pi. 2, fig. 1 (H. lerpsichore). 



Imago. — 6" , 9 . Head moderately prominent ; the front moderately wide, slightly nar- 

 rowing toward the labial region; vestiture moderately close. Antennas of ? bipectinate, 

 distal parts about one-half as long as the basal, the latter a little thickened toward the end, very 

 sbghtly ciliated with minute very short filaments; consisting of about 32 joints, the last eight 

 without pectinations. Palpi short, porrect, not reaching the front. No vestiges of maxillae 

 in the undenuded example. 



Fore wings with the costa straight to near the apex, where it is slightly curved, the apex 

 moderately rounded, the outer edge moderately full, not falcate. Hind wings with the outer 

 edge full and convex. 



Venation: Differs decidedly from Vsta in vein 1^ of fore wing, arising much farther in 

 toward the base of the wing, so that the space between it and the common stalk of vein II 2 , 

 II 3 , and II 4 is much wider; on hind wings the discal vein arises farther from the origin of vein 

 IV, (second median), the discocellular veins, as in Vsta, making a decided angle or a regular 



curve. 



Coloration: Ground color, white, with four brown bands on the fore wings and three on 

 the hind wings; a large complete ocellus usually on each wing, those of the fore wings much 

 larger than those on the hind wings in the type species (H. apollonia). A subapical oval spot 

 at the costal end of the extradiscal line and a reddish brown spot at the end of the submarginal 

 line; two of the lines or shades situated within the ocellus of the fore wing. 



Geographical distribution. — This genus is confined to the Ethiopian realm, most of the 

 species being southeast African. 



Rothschild, in Nov. Zoologicse, thus arranges the species: 



1. H. apollonia (Cram). 



nb.jlavida (Butler). 



2. H . bioculata Auriv . [\ = marnois.] 



3. H. marnois (Rogenh.) [Lake Victoria Nyanza.] 



4. H. dryops (Maass. and Weym.). 



5. H. terpischore (Maass. and Weym.). 

 83570°— 14 11 



