PHEMIADES.— THOON. 529 



htura flava notato ; posticis fascia maculosa transversa ultra cellulam coloris ejusdem : subtus anticis 

 area interna fusca, maculis discalibus paginse superioris majoribus et fasciis duabus subapicalibus flavis, 

 costa et apicem versus castaneis ; posticis castaneis, fascia subcostali, secunda mediana et margine ipso 

 ad angulura analem anguste flavis ; tibiis runs. 

 $ mari similis. 



Hdb. Panama, Chiriqui (mus. Staudinger). — South America to Brazil 4 . 



Of this conspicuous species we have seen a specimen from Chiriqui in Dr. Staudinger's 

 collection. Unfortunately this insect is not now before us, hence we have taken oar 

 description from Guiana examples rather than exclude P. propertius from our list. 

 It is perhaps not really different from Pajpilio phineus, Cram. For the genitalia of 

 the male, see Tab. XCVII. fig. 34. 



THOON, gen. nov. 



The two Central-American species referred to this genus, of which we take Proteides 

 modius, Mab. (=P. stilio, Mab.), as the type, are very like Cobalus; but the males 

 have a double brand on the primaries — a triangular piece and a short longitudinal 

 streak below it — and very peculiar genitalia. These characters also separate Thoon from 

 other allied genera. 



The antennae are a little more than half the length of the costa, and have a rather 

 slender club, terminating in a long crook. The third joint of the palpi is short, but 

 distinctly visible, and bluntly conical. The primaries are considerably produced at the 

 apex, somewhat pointed in the male and blunt in the female, the costa arched at the 

 base ; the cell is much less than two-thirds the length of the costa ; the discocellulars 

 are oblique, the upper one about three times the length of the lower, the latter being 

 shorter than the third median segment ; the lower radial is strongly depressed at the 

 base ; the first branch arises before the middle of the median nervure, the second not 

 far from the lower angle of the cell. The secondaries are produced at the anal angle, 

 extending beyond the apex of the abdomen ; the discocellulars are faint and transverse. 

 The body is robust. The middle tibia? are furnished with long spines, and the hind 

 tibise have two pairs of spurs. The primaries of the male have the two portions of the 

 brand placed thus : (1) a subtriangular piece (slightly excised externally in the type) in 

 the angle between the base of the second median segment and that of the first median 

 branch; (2) a short longitudinal streak just below it. 



1. Thoon modius. (Tab. XCVII. figg. 35-38, 4 .) 

 Proteides modius, Mab. Le Nat. 1889, p. 99, f. 2 \ 

 Proteides stilio, Mab. Compt. rend. Soc. Ent. Belg. xxxv. p. lxxxvii (1891) 2 . 



Alis nigro-fuscis, stigmate fere concolore, anticis maculis duabus parvis in cellula (interdum obsoletis), tribus in 

 linea obliqua (una ad venam submedianam ochracea), duabus inter ramos medianos, infima magna et 

 subquadrata, una (interdum duabus) parva, subapicali, flavo-hyalinis ; posticis maculis tribus in serie 

 transversa ultra cellulam ocbraceis : subtus fere ut supra, sed pallidioribus, anticis macula submediana 



