no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 53 



The notable features, judging by Holland's figure, are the spinous cremaster by which the 

 pupa is suspended head down, the hooks of the cremaster grappling in a loose pad of silk; the 

 large spines on the abdominal segments ; and those on the head and back of the thorax. 



Geographical distribution. — -Western Ethiopian realm, Old Calabar, and the French Congo, 

 about the mouth of OgovS River, a little south of Cape Lopez. 



CREMASTOCHRYSALLIS ARNOBIA (Westwood). 



Plate XXXVI, fig. 1. 



Saturnia arnobia Westwood, Proc. Zool. Soc. London, January, 1881, p. 142, PI. XII, fig. 2. 



Cremaslochrysallis arnobia Karsch. 



Pseudoantheraea arnobia Staudinger. 



Saturnia arnobia Holland, Psyche, VI, No. 190, p. 213; Pupa, PI. 5, fig. 1, February, 1892. 



Copaxa (?) arnobia Kirby, Syn. Cat. Lep. Het., I, p. 755, 934, 1892. 



Imago. — -One 9 , in poor condition (torn but not rubbed). Head, body and •wings snuff- 

 yellow ochre, with dull brick-reddish markings and shades, the wings thickly dusted with dull 

 reddish scales. 



Fore wings uniformly dull ochreous yellow, thickly dusted with reddish brown, and crossed 

 by four broad shades or diffuse bands. The basal line is a little nearer the discal spot than to the 

 insertion of the wing; it is broad, diffuse, broken on the vein and between that and the inner 

 edge is incurved. Between this and the discal spot is a broad dark red shade slightly incurved, 

 and on the inner edge uniting with the extradiscal shade, which is nearly straight, and ends on 

 the costa before the apex; no marginal shade or blotches. Discal spot large, clear, surrounded 

 by a dark ring, as figured by Westwood. 



Hind wings more yellow, especially toward the base than the fore wings. A basal shade 

 just within the discal spot; just beyond it a broad scalloped line of 7£ scallops, red brown in hue, 

 then a yellowish shade; the margin densely powdered with rust-brown scales. Discal spot a 

 large clear rounded lunate space, a little excavated on the inside, and encircled with a broad 

 dark reddish-brown roundish oval ring. 



Under side of the wings more yellowish than above, especially those of the hinder pair, 

 but the shades are as above, though broader, more diffuse, and less distinct. Discal spot with 

 the clear portion larger than above, more distinctly lunate, and showing a part of the discal 

 vein. On the fore wings the discal spot is as above. 

 Expanse of the fore wings, 9 140 mm 

 Length of a fore wing, 9 76 mm. 

 Breadth of a fore wing, 9 40 mm. 

 Length of a hind wing, 9 51 mm. 

 Breadth of a hind wing, 9 42 mm. 



Ocellus of fore wings, 9 by 6 mm.; of hind wings, 9 by 8 mm. 

 [Rothschild recognizes an ab. discrepans (Butler).] 



Pupa. — Mr. Good described the chrysalis as " dark green in color, beginning to change before 

 disclosing the moth, to a pale green, and later to the yellow of the empty shell." 

 The rainy and dry season broods have been thus described by Dr. Holland: 

 "Mr. Good sent me of this brood six perfect specimens, male and female, and several chrysa- 

 lids which had failed to disclose the imago, and from one of which the figure on Plate 5 is drawn. 

 Later he sent me three of the second brood, and a chrysalid, which in form is identical with the 

 chrysalids of the first brood, but smaller. This last sending was accompanied by the following 

 note: 



" 'No. 43: I designate these specimens by the same mark, No. 43, as those which I sent you 

 in the summer. The chrysalid appears to be identical in form and color, but the moths are very 

 different in color. If this is the same species, then the larvae bred in the dry season do not pro- 

 duce as fine moths as those that feed in the latter part of the rainy season. These specimens 

 emerged October 15, 1888, the rainy season, which is late this year, having just commenced.' 



