330 GROTE AND ROBINSON. 



The limits of the genus appear to be here reached, and we would 

 not refer to Alypia a species couiiuunicated to us by Dr. Boisduval 

 from Mexico under a MS. name, but which is apparently as figured 

 Agarista bimaculata, IT.-S., Exot. fig. 26. 



Sub-Family Zygaeninae. 

 The genera Ctenueha Klrhtj, and Gnophaela Walk., have been re- 

 ferred to the Bombycidae by Authors, but are now recognized as be- 

 longing to the Zygaenidae. Under the name Calhtlucia Grote, the 

 characters of Gnophaela have been sufficiently exposed. 



CTENUCHA. Kirhj/. 



1. Ctenueha virginica, Grote {Sphinx virg. Charp.; Ctcn. Latreillana Kirby). 



2. Ctenueha eressonana. Grote. 

 7>. Ctenueha ochroscapsus, n. sp. 



% 9 • — Size of C. virginica. Head entirely orange yellow. Labial 

 palpi shorter than in C. virginica, and held porrectedly against the 

 front; the short terminal article is black, while the basal joints are en- 

 tirely orange yellow. Antennae long, black, closely bipectinate; in 

 the % the pectinations are longer than in the $ , but shorter than in 

 S C. virginica. Collar dark cyaneous, bordered anteriorly and late- 

 rally with powdery orange yellow scales which also obtain obsoletely 

 centrally. Sides of the prothorax orange yellow. •Tegulae largely or- 

 ange yellow, narrowly and evenly black on the sides outwardly. Tho- 

 racic disc dark cyaneous. Abdomen, above, bright cyaneous; beneath, 

 black. Legs black; in the % inwardly shaded with obscure whitish. 

 Anterior wings dull black, with a faint cyaneous shade at base, im- 

 maculate. Fringes black except at apices, where they are prominently 

 white and are again faintly whitish before anal angle. Secondaries 

 black, shaded with cyaneous centrally and over internal margin ; fringes 

 black, except at apices, where they are white. Under surface resem- 

 bling upper, but more brownish. 



Ejpdnar. Al m.m. Lemjth nflxxh/^ 17 m. m. 



Ihihitat. — California. S 9 , Mm. Bcrol. 



C. ochroscapsus, and the Ibllowing species differ from C. virginica, 

 and C. eressonana, in that the head is .slightly narrower behind, while 

 the labial palpi are somewhat shorter and porrected. These differences 

 do not seem sufficient to authorize their generic separation, since in the 

 totality of their remaining characters they agree with the typical spe- 

 cies of the genus, which they resemble in form, size, and in the style 

 of ornamentation. 



