506 RHOPALOCEKA. 



Only two examples of this species, both males, were sent us by Mr. Rogers from 

 Costa Rica. One of these is labelled as having been compared by Salvin with the 

 type of Hesperia saxula, Mab., a description of which we are unable to find. For the 

 genitalia of the male, see Tab. XCV. fig. 44. 



VII. Antenna? moderately long (except in Calpodes and certain species of Prenes), 

 with a long crook ; hind tibiae with two pairs of spurs ; primaries of the male 

 with or without a brand. 



A. Terminal joint of the palpi short or moderately short *. 



CALPODES. 



Calpodes, Hiibner, Verz. bek. Schmett. p. 107 (1816) (part.) ; Scudder, Rep. Peabody Ac. Sci. iv. 

 p. 82 (1872) ; Watson, P. Z. S. 1893, p. 104 (part.). 



Under this genus Watson places a number of heterogeneous forms, giving Papilio 

 ethlius, Cram., as the type. He states that there are no sexual characters on the fore 

 wings of the male ; nevertheless, C. orchamus, C. epitus, and C. evadnes (Cram.) are 

 branded in this sex. C. nero (Fabr.), C. ares (Feld.), and C. ocola (Edw.), the males of 

 which are not branded, are here referred to Prenes, and the remainder belong elsewhere. 

 Calpodes, as restricted by us, includes C. ethlius only. It is allied to Prenes, but differs 

 in having a relatively narrower cell in the primaries (the third median segment of which 

 is much longer), the first branch arises nearer the base of the median nervure, and the 

 second is strongly curved, and the discocellulars of the secondaries are shorter. 



The antennse are barely more than one-third the length of the costa, and have a short, 

 stout club, terminating in a moderately long crook. The palpi have the third joint very 

 short, stout, and bluntly conical, almost concealed. The primaries are narrow, very 

 elongate, and pointed at the tip ; the cell is fully two-thirds the length of the costa, 

 narrow and greatly produced at the apex; the discocellulars are very oblique, the upper 

 one about twice the length of the lower, which is itself only half the length of the 

 third median segment ; the lower radial is depressed at the base ; the first branch 

 arises a little before the middle of the median nervure, and the second at some distance 

 before the lower angle of the cell, the second being strongly curved. The secondaries 

 are lobed at the anal angle ; the discocellulars are short, faint, and strongly oblique. 

 The body is very robust. The middle and hind tibiae are spined, the latter with two 

 pairs of spurs. The primaries are without trace of a brand in the male. 



C. ethlius is a common Tropical-American insect, extending northward to the Southern 

 United States and southward to the Argentine Republic, and occurring also in most 

 of the West-Indian Islands. It is of very powerful flight. The neuration of the fore 

 wing is figured on Tab. XCV. fig. 45. 



* Longer in the genus Vinius. 



