ACHLYODES.— SOSTEATA. 397 



Dr. Staudinger has lent us the type of this species, the only specimen we have seen. 

 It is a female. 



SOSTRATA, gen. nov. 



The primaries in this genus are rather elongated, the outer margin being evenly 

 rounded ; the palpi have a rather long porrect terminal joint; the antennae much as 

 in Achlyodes, with a curved rather elongated club tapering to a point ; the primaries 

 have a distinct costal fold, the third median segment is very short, the lower disco- 

 cellular rather shorter than the middle ; the third median segment of the secondaries 

 is very short, about one-third the second subcostal segment, the discocellulars and 

 radial are very feeble ; the hind tibise have two pairs of spurs and a tibial tuft. 



The range of the genus extends from Eastern Mexico to South-eastern Brazil, three 

 species being found within this wide area. 



1. Sostrata scintillans. (Tab. LXXXVI. figg. 22, 23, 24 e .) 



Leucochitonea scintillans, Mab. Bull. Soc. Ent. Fr. 1876, p. cc \ 



Alis nigricantibus, ad margines vix violaceo tinctis ; anticis bitriente basali squamis nitide argenteo-cseruleis 

 irregulariter notatis, fasciisque undulatis angustis nigris ornatis, punctis duobus submarginalibus semi- 

 hyalinis ; posticis parte basali cseruleo atomatis, fasciis tribus indistinctis fuscis : subtus pallide fuscis, 

 anticis fusco nebulosis, posticis indistincte fusco zonatis ; palpis subtus griseo-albidis. 



Hab. Mexico, Acapulco, Dos Arroyos, Atoyac, Teapa (H. H. Smith), Valladolid in 

 Yucatan (Gaumer); Guatemala, Panima, Cahabon, Zapote (Champion); Costa Rica, 

 Irazu, Cache (Rogers). — Guiana l ; Beazil 1 . 



The types of this pretty species came from Guiana and Brazil, and from the latter 

 country we have several examples agreeing accurately with a good series from Mexico 

 and Central America, where the species appears to be fairly common. 



The male genitalia have a tegumen consisting of a central piece, the edges of which 

 are bent downwards ; the whole piece is slightly curved and truncate at the end, the 

 corners slightly proj ecting ; on either side from the base a curved rod proceeds and 

 reaches almost to the end of the central piece : the scaphium is well developed and 

 covered at the end with a granular surface ; the harpes are very simple and end in a 

 lobe, the upper edge of which is armed with strong bristles, the middle of the dorsal 

 edge' is broken. (See Tab. LXXXVI. fig. 24.) 



2. Sostrata leucorrhoa, sp. n. 



S. scintillanti similis, sed posticis subtus dimidio anali glauco-albo ; anticis quoque subtus ad marginem internum 

 albo notatis. 



Hab. Panama, Chiriqui (Bible), Panama (J. J. Walker), Taboga I. (Mathew).— 

 Colombia. 



