no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 45 



field, encircled by a dark ring, which is thickened on the inner side and incloses on the inner 



side a pale blue semicircular line edged on the inner side with dark brown scales. 



Under side of the wings of both pairs more gray than above, especially on the hind wings. 



The discal spots beneath exactly the size and colors of those of the hind wings of the upper side; 



that on the hind wing is obsolete, represented by a little white spot. 



Expanse of fore wings, 9 , 109 mm. 



Length of fore wing, 9 , 58 mm. 



Breadth of fore wing, 9 , 34 mm. 



Length of hind wing, 9 , 41 mm. 



Breadth of hind wing, $ 37 mm. 



Ocellus of fore wing, 9 , 6 by 6 mm. ; beneath, 7 by 7 mm. 



Ocellus of hind wing, 9 , 9.5 by 9.5 mm. 



This species which might be mistaken for a Nudaurelia, may be recognized by its rounded, 



broad wings, by the white lines, by the solid, opaque ocellus of the fore wings, while that of each 



hind wing is wanting, as well as the broadly pectinated 9 antenna?. 



Cocoon. — An oval network formed of thin silky tissue; yellowish gray, slightly lustrous; 



measuring 6-7 [67 ?] mm. in length (Sonthonnax). 



Geographical distribution. — Madagascar and Comores (Sonthonnax), collected at Lurakak. 



Madagascar (J. Doll). 



NUDAURELIA Rothschild. 



Antheraea [Walker, Cat. Lep. Het. Brit. Mus., V (1855), p. 1239 (in part)]. 

 [Nudaurelia Rothschild, Nov. Zoo\., February, 1895, p. 41.] 



Imago. — o* and 9 • Head with the front rather full and wide, inclined to be wider in front 

 than usual, and the front is rather closely cropped; when denuded broad and flat, with a slight 

 ridge toward the vertex. Antennae of <? broadly bipectinated, 45 joints in male, the last 10 

 subfiliform, subplumose, the joints in the middle as long as they are thick, the distal pectinations 

 as long and of the same size as the basal ones, with rather short and thick cilia; tip subfiliform; 

 distal pectinations reduced to short teeth. Antennas of 9 with 40 joints, filiform, the vestigial 

 basal pectinations reduced to very short minute teeth; those representing the distal pectina- 

 tions very minute and short. Palpi rather large, reaching to the front; third joint distinct, 

 longer than usual, not very thick, not so long as the second is broad. (Maxillae not found after 

 the removal of a palpus; no signs of maxilla? in specimens not denvided.) Thorax and body 

 stout; the prothoracic collar well defined. 



Fore wings slightly falcate; costal edge somewhat concave toward the apex; the latter 

 obtuse; the outer edge slightly concave below the apex. Hind wings extending well beyond the 

 tip of the abdomen. Legs stout, especially in the male, the fore tibia short and broad, being 

 densely scaled; no tibial spurs. Fore tibia rather long, as long as in Thyella, densely hairy, 

 concealing the sack, but with no spurs. The tibial odoriferous sack is large, about three-fourths 

 as long as the tibia itself, broad, oval lanceolate, and ending in a sharp point ; under it is a minute 

 secondary sack, not so long as the outer one is wide. The legs with 5-jointed tibia, normal. 

 Mr. Rothschild makes the strange statement that in Nudaurelia the fore tarsi [he says legs] are in 

 the female "minute and entirely atrophied." He must have had imperfect specimens, as in 

 my 9 the tarsi are normal. 



Venation: Vein II 2 wanting; vein IL_ arises as in Lobobunaea at the middle of the discal cell; 

 in fact the venation of Lobobunaea phaedusa and N. cytherea are nearly identical, as may be seen 

 in the figures, but Nudaurelia is more modified or specialized, as it has lost vein II 2 , and the 

 ocellus is a complete one. Hind wings [with] root or origin of veins II and III l7 much nearer 

 together in Lobobunaea or Bunaea. III 2 more detached at base than in the other genera named. 



Markings: Basal and extradiscal lines on wings of both pairs, and large completely formed 

 ocelli on wings of each pair. The species have a superficial resemblance to those of Antheraea, 

 a genus of Saturniida? not occurring in Africa. 



Geographical distribution. — Confined to the Ethiopian region or to Africa south of the Sahara 

 and Egypt, ranging [southward] to Cape Town. 



