LEPIDOPTERA HETEROCERA. 1215 



Group ? 



12. ATTACUS ZA.CATICA. 



Aim valde angustce subfalcatce nigra, omnes macula maxima vitrea, 

 anticce striga basali geniculata alba, ad apicem fulvo castaneo 

 cinereoque variegatce, fascia interrupta alba extus rufescente ; 

 postica nigrce, prope marginem posticum fascia interrupta 

 alba extus castaneo ntfa, margine postico cinereo variegato. 



Saturnia Zaeatica, Westw. Ann. Nat. Hist. 2nd Ser. xv. 295. 



Distinguished by its very narrow wings and by the large size 

 of the vitreous spots. 



Bogota. 



Africa. 



A. Abdomen breve. 



A. Macula? vitreae arcuatae. Maris alae anticae valde faleatae. 



Vacuna, Westw. 



B. Maculae vitrei elliptical. - Baurnhiria, MSS. 



B. Abdomen mediocriter longum. Maculae vitrea? in alis anticis 



fusiformes, in posticis ellipticae. Maris alae anticae subfalcata?. 



Mythimna, Westw. 



Group 1. 



Antennae thoracelongiores. Alae amplae, macula magna vitrea ; 

 anticae subfalcatae, apud costam convexae, margine exteriore obliquo 

 subunduloso, macula vitrea elongata subfusiformi subarcuata aut 

 falciformi; posticae multo latiores quam longae, macula vitrea 

 elliptica majore aut plus minusve falciformi. Mas. — Antennae 

 latissime pectinatae, ramis aequalibus ciliatis duplicatis. Alae pos- 

 ticae, abdomen bistriente aut plus superantes. Fcem. — Antennae 

 late pectinatae. Alae posticae abdomen triente aut plus dimidio 

 superantes. 



The three African species differ much from the other groups of 

 Attacus, and are the least typical of the genus. Antennae rather 

 longer than the thorax. Wings ample ; each with a large vitreous 

 spot. Fore wings convex in front, more or less falcate at the tips, 

 oblique and undulating along the exterior border; vitreous spot 

 elongate, subfusiform, and slightly curved or falciform. Hind 

 wings much broader than long, much broader than the fore wings ; 

 vitreous spot elliptical and larger than that of the fore wings, or 



