398 EHOPALOCERA. 



A close ally of S. scintillans, the place of which it apparently takes in the State of 

 Panama, Colombia, and Venezuela. The white apical angle of the secondaries beneath 

 is a marked feature, distinguishing it from the allied form. 



3. Sostrata pusilla, sp. n. (Tab. LXXXVI. figg. 25, 26 6 .) 



Praecedentibus similis, sed multo minor ; alis nigricantioribus ad basin tantum cseruleo atomatis ; anticis punctis 

 subapiealibus nullis. 



Hab. Nicaragua, Chontales (Belt) ; Panama, Bugaba (Champion). — Amazons Valley. 



This little species is evidently allied to 8. scintillans, but differs in being much 

 smaller, with darker wings, the blue scales being confined to the basal half, and the 

 absence of hyaline spots in the apex of the primaries. We have as yet only seen four 

 specimens of S. pusilla — one from each of our Central American localities, and two 

 from the Amazons Valley, taken by Bates at Ega and Santarem. All four are males. 



PACHES, gen. nov. 

 Pythonides, Watson, P. Z. S. 1893, p. 51 (partim). 



Under this genus, of which Phareas loxus, We.stw., may be considered the type, we 

 include all the species placed in Pythonides by Mr. Watson which have the hind tibiae 

 in the male with two pairs of spurs and a tibial tuft. In true Pythonides the latter 

 character is absent, and in the next genus we find only one pair of spurs. 



The antennae have a rather long tapering club, which is curved and drawn to a point ; 

 the palpi have a rather prominent porrect terminal joint ; the third submedian segment 

 of the primaries is moderately long, less than half, but more than a third, the second 

 joint, the lower and middle discocellulars are subequal and in a line, and they as well 

 as the radial are feeble ; the third median segment of the secondaries is distinct and 

 only slightly shorter than the second subcostal segment ; the discocellulars and radial 

 are very feebly developed. 



The range of Paches extends throughout the Neotropical region from Southern 

 Mexico to South Brazil. 



1. Paches loxus. (Tab. LXXXVI. fig. 27 e .) 



Phareas loxus, Westw. in Doubl. & Hew. Gen. Diurn. Lep. p. 516 \ 



Pythonides loxus, Hew. Gen. Diurn. Lep. t. 80. f. 4 2 ; Wats. P. Z. S. 1893, p. 51 \ 



Leucochitonea loxus, Kirby, Cat. Hew. Coll. p. 231 4 . 



Alis fusco-nigricantibus ; anticis ad basin et linea irregulari discali margini externo subparallela laBte saturate 



cyaneis; posticis area interna omnino hujus coloris : subtus fere omnino fuscis, posticis squamis paucis 



in lineis duabus transversis positis tantum notatis. 

 2 . Alis supra colore cyaneo nulla ; anticis punctis quibusdam semihyalinis in linea valde irregulari et interrupta 



positis a costa usque ad marginem internum ; posticis linea mediana transversa, squamis sparsis glaucis 



composita, introrsum melius definita. 



