no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 27 



three lines; a curved basal one, a straight extradiscal one, and just beyond a distinct deeply 

 scalloped reddish brown line. On the hind wings are two closely parallel extradiscal lines. 



The distinguishing marks of this genus are the rather long broad tails of the hind wings; 

 the falcate fore wings; the plumose antennae, and the unusually long palpi. 



Larva. — When full-fed the body is entirely unarmed. 



Geographical distribution. — Neogaeic. All the species are reported as inhabiting Chile 



only. 



[CERCOPHANA VENUSTA (Walker).] 



Plate XXXI, figs. 14, 15; CXI, fig. j (frauenfeldi). 



EUDELIA RUFESCENS Philippi. 



Eudelia rufescens Philippi, Stettin Ent. Zeit., XXV, p. 91, 1864. 

 Eudelia.ru/escens Maassen and Weymer, Beitriige Schmett., IV, figs. 75, 76, 1881. 

 Eudelia rufescens Preuss, Abbild. Nacktschniett., p. 8, PL 11, fig. 1, 1881. 

 Eudelia rufescens Kirbt, Syn. Cat. Lep. Het., I, p. 765, 1892. 

 Cercophana venusta Rothschild, Nov. Zool., II, p. 47, 1895. 

 Cercophana rufescens Rothschild, Nov. Zool., II, p. 47, 1895. 

 Cercophana vulpes Rothschild, Nov. Zool., II, p. 47, 1895. 

 Cercophana daphnea Rothschild, Nov. Zool., II, p. 47, 1895. 

 Cercophana frauenfeldi Rothschlld, Nov. Zool., II, p. 47, 1895. 



Imago. — One S . Boc^ and wings fawn color or yellowish sienna brown; with reddish 

 ochreous markings; antenna? of nearly the same color. Fore wings uniformly yellow fawn or 

 sienna brown; a basal curved diffuse line; extradiscal line not curved or scalloped but oblique, 

 and beyond is a scalloped line of the same hue, situated about half way between the extradiscal 

 line and the outer edge of the wing. Discal spot large, round, white, opaque, entirely covered 

 with white scales, and narrowly encircled with dark brown. Fringe reddish brown, yellow 

 on the inner angle. 



Hind wings yellow ochre, becoming reddish brown towards the base of the tail, which is 

 also reddish brown. Fore wings beneath as above, but a little paler, becoming reddish around 

 the discal spot which is a little smaller than above, and with a brown haze or cloud around 

 it, not forming a definite brown ring as above. The under side of the hind wings more yellow 

 than above, and yellow on the tails. 



Expanse of the fore wings, s , 66 mm. 



Length of a fore wing, S , 33 mm. 



Breadth of a fore wing, <? , 18 mm. 



Length of hind wing, including tail, 38 mm.; tail alone, 15 mm. long; breadth at 



base, 9 mm. 

 Breadth of hind wing, 18 mm. 



Walker in his diagnosis of Lonornia does not refer to the tails of the hind wings. 



Geographical distribution. — Thus far not known to range beyond the coast of Chile. 



RothschUd considers that rufescens (Phil.), vulpes (Butler), daphnea (Maass. and Wern.)> 

 and frauenfeldi (Felder) are aberrant forms of 0. venusta Walker. 



Larva. — Our knowledge of the larva of this genus is derived from a colored drawing in the 

 British Museum, of which fig. 14, PI. XXXI, is a copy, which I was kindly allowed by Sir 

 George Hampson to have made. It is labelled " 0. frauenfeldi." 



On comparing this with an alcoholic example of Aglia tau, and the excellent figure by 

 Prof. Poulton, which evidently well represents its characteristic attitude when at rest, the 

 resemblance between the larvae of the two genera in their final stage is striking. 



In Cercophana the body is smooth and unarmed; the segments apparently not convex, 

 and smooth; the head is small and the two anterior thoracic segments small, while apparently 

 the tergum of the metathoracic segment (unless it be the first abdominal) is prolonged into a 

 long median process, which overhangs the retracted head and two anterior thoracic segments. 

 Also the suranal plate is greatly prolonged into a sharp conspicuous process. Along the sides 

 is a row of six long black setae which extend downward and backward. The body is brownish 



