388 EHOPALOCEEA. 



Valley (F. D. G. & 0. S.) ; Honduras (Dyson), San Pedro (G. M. Whitely) ; Nicaragua, 

 Chontales (Belt) ; Costa Rica (Van Patten z ), Irazu, Cache (Rogers) ; Panama, Chiriqui 

 (ArcS), Bugaba (Champion), Lion Hill (M'Leannan). — South America, from Colombia 

 to South Brazil. 



This species is one of the common Hesperiidae which has a nearly universal range 

 over Tropical America from Southern Mexico to Southern Brazil, and varies but little 

 throughout this wide area. The only evident departure from the normal form is found 

 in the insect inhabiting the island of Ruatan, which we venture to distinguish by a 

 separate name. 



Xenophanes tryxus was first described and figured by Cramer, and subsequently by 

 Hiibner under the same specific name. Though redescribed by Fabricius as Hesperia 

 salvianus, the species has usually passed under Cramer's name. 



The species is chiefly a lowland one, being found at the sea-level both in Mexico 

 and further south ; the limit to which it ascends the mountains does not exceed 3000 or 

 4000 feet. 



The male genitalia have a forked tegumen, with a short blunt point at the base on 

 either side ; the scaphium is well developed ; the harpes have a rounded end, with a 

 rounded serrate projection on the dorsal edge near the end, about the middle of the 

 dorsal edge is a small serrate lobe directed forwards, and near the base of the inner 

 surface of the harpes a complex upright lobe also serrate. (See Tab. LXXXV. fig. 18.) 



2. Xenophanes ruatanensis, sp. n. 



X. tryxo similis, sed minor et multo obscurior, plagis semihyalinis alarum multo minoribus forsan distinguendus. 



Hab. Honduras, Ruatan I. (G. F. Gaumer). 



Two specimens of this species sent us by Dr. Gaumer differ from all the mainland 

 individuals in being smaller and much darker. The semihyaline spots of the wings 

 are very small. The underside is for the most part dark coloured, the light pearly- 

 white of the allied form being almost restricted to the area surrounding the trans- 

 parent spot of the secondaries. 



In its dark colour this Hesperid follows the rule of the few species of Rhopalocera 

 that we have seen from Ruatan I. 



CARRHENES, gen. nov. 

 The members of this genus, like those of the preceding, have rounded primaries, the 

 apex not being truncate. The neuration of the primaries is much as in Xenophanes 

 tryxus, but the third median segment of the secondaries is short ; the lower discocellular 

 is shorter than the middle discocellular, and both of them, as well as the radial, are 

 feeble; the primaries have a very pronounced fold to the costa; and there is a large 

 tuft of brown hairs attached to the proximal end of the hind tibiae. 



