TARCHON.—HYGROCHROA. 223 
costal margin, which is yellowish-brown) and the outer half pale yellowish-brown, the latter crossed by 
a narrow dark brown line and by a submarginal row of black lunular marks extending from the apex to 
beyond the middle but not reaching the anal angle; the underside of the secondaries uniform pale 
yellowish-brown, a small white dot about the middle of the costal margin, from which a brown waved. 
band crosses to the inner margin, and beyond this band and nearer the outer margin is a narrow waved 
line of dark brown lunular marks: head, thorax, and the upperside of the abdomen pale reddish-brown, 
the underside of the latter pale yellowish-brown; front of the head, palpi, and the underside of the 
thorax dark brown; antenne black; legs dark brown. Expanse, ¢, 14 inch; 9, 24 inches. 
Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). 
This species is allied to 7. trilunula (Herr.-Schaff.), from which the male is at once 
distinguished by the absence of the purple band from the primaries. The female of 
our insect, when compared with Felder’s figure of the same sex of 7. trilunula, will at 
once be seen to be very distinct. The sexes of 7. felderi were captured in copuld by 
Mr. Champion. 
Fam. BOMBYCIDZ. 
COLLA. 
Colla, Walker, Cat. xxxii. p. 580. 
Walker founded this genus upon a species from Bogota, which he described as Colla 
glaucescens. J have no doubt it is identical with that figured by Drury under the name 
of Phalena (Bombyx) rhodope; Walker placed Drury’s insect in the genus Endromis, 
from which it is very different in neuration. C. rhodope is now known to extend as 
far north as Mexico. 
1. Colla rhodope. 
Phalena Bombyx rhodope, Drury, Ill. Exot. Ins. iii. p. 30, t. 22. f. 3°. 
Endromis rhodope, Walk. Cat. vi. p. 1386”. 
Colla glaucescens, Walk. Cat. xxxii. p. 580°. 
Hab. Mexico, Paso del Macho (Hége).—Cotomsia, Bogota?; Ecuapor ; Braziu 12. 
Herr Hoge sent one specimen of this fine insect, and also the pupa; the latter is 
of a dark-brown colour, and enclosed in a silvery-grey silky cocoon. 
The specimen from Ecuador in my own collection is considerably smaller than the 
one from Mexico; the latter agrees fairly well with Drury’s figure, and also with the 
type of Colla glaucescens, Walk. I have not seen any specimens from Brazil. 
HYGROCHROA. 
Hygrochroa, Felder, Reise d. Nov. Lep. t. 95. f. 15, Erkl. der Taf. 75 bis 107, p. 5 (1874). 
Anthocroca, Butler, Trans. Ent. Soc. Lond. 1878, p. 78. 
This genus was established by Felder upon an Amazonian species, H. vulnerata ; 
this insect is identical in neuration with Anthocroca muscosa and A. cuneifera, Butl., 
from the same region. 
Three species inhabit Central America. 
