160 MR. J. O. WESTWOOD ON THE LEPIDOPTEROUS 



Subdiv. 2. Fore wings more distinctly angular at the tips : hind wings slightly angular. 5 species — 

 C. Dalmanni, hegemon, orestes, Boisduvalii, and amycus. 

 Div. 2. Body more slender. 



Subdiv. 1. Hind -wings slightly angular. C. mygdon and phalaris. 

 Subdiv. 2. Hind wings quite rounded. 



Sect 1 . Fore -ndngs rounded at the tips, moderately long. C. actinophous [acriEoides) , decussata, 



cronis, strigata {Godartii), Hubneri. 

 Sect. 2. Fore wings slightly truncated at the tips. C chremes, thais. 



Sect. 3. Fore wings rouuded at the tips^ verylong; resembliug the JTe^icowM in structure. C.linus 

 and acrceoides. 

 Div. ?. C. Kirstenii. 



Dr. Boisduval, in liis ' Species general des Lepidopteres heteroceres,' published in 

 Fehruary 1875 (although dated 1874), has divided the Castnice (Tril)u des Castniaires) 

 into the following genera : — 



1. Castnia (including 63 species, without any attempt at subdivision). Claaracterized by 



the " Palpes divergents de trois articles ecaUleux, montant a peine au niveau du 

 front, le dernier article petit et conique" (as shown in Gray's figures \b, \c,\cl). 

 The " antennes en massue, cylindriques, terminees par une tres-petite houppe 

 soyeuse " (as in Gray's figure 1 «), the " pattes — avec les jambes munies de deux 

 ergots." The other characters cannot be regarded as generic. 



2. Cbretes (n. g., including C. cliremes, thais, and Fabricii {Marcel Serresi) = Gray's 



5th group and Walker's Div. 2, Subdiv. 2, Sect. 2, characterized by the "tete petite" 

 (overlooking the difference of the size of the head in the two seses). Antennse with 

 a " longue massue fusiforme se terminant en pointe " (contrary to Gray's descrip- 

 tion), " palpes tres-velus appliques fortement sur le front, non divergents, a articles 

 indistincts." Tore wings mth the " sommet un peu pointu," and hind wings with 

 the " deux nervures medianes tres-rapprochees et coudees en sens inverse, mais ne 

 se joignant pas pour former une cellule fermee." This last character is evidently 

 taken from Gray's fig. 3, and answers to the hind wing of C. Marcel Serresi, but 

 not to that of G. chremes, in which the cellule is ijro tanto " fermee " by the fold, as 

 shown in my figm-e. The fact that Dr. Boisduval excludes C. diva, Butler {tricolor, 

 Pelder) from this genus, and unites it (p. 531) with Castnia, notwithstandiug its 

 extremely close afiinity with C. chremes, is a sufiicient proof of the unsatisfactory 

 character of the genus. 



3. OiiTHiA, n. g., having the head small, theantennse " en massue fusiforme, termineepar 



uuepetite pointe, palpes tres-velus, tres-courts, a articles indistincts. Ailes allongees, 

 assez etroites, les inferieures ayant pres de la base une petite cellule elliptique 

 fermee." 



This genus is divided into two uncharacterized sections : — 



1 1. C. therapon, Koll. {liaradoxa, Bdv.). 

 2. C. acrceoides, Bdv. 



