534 EHOPALOCEEA. 



numerous similarly-coloured forms, the large head and eyes, the green hairs on the head 

 and on the front of the thorax, and the form of the brand will serve to distinguish it. 

 One of the Chiriqui specimens has on the underside of the secondaries a faint spot in 

 the cell, and three others beyond it, formed by scattered ochreous scales. For the 

 genitalia of the male, see Tab. XCV1II. fig. 13. 



COBALUS. 



Cobalus, Hiibner, Verz. bek. Schmett. p. 115 (1816) (part.) ; Watson, P. Z. S. 1893, p. 120. 



Under this genus we provisionally include various Tropical-American forms — Hesperia 

 fidicula, Hew., Carystus argus, Moschl., Pamphila warra, Moschl., &c. Watson takes 

 as the type Papilio virbius, Cram., an insect not entering our limits ; the other species 

 he places in it, Hesperia physcella, Hew., belongs to our genus Euty chide. Cobalus 

 cannce, H.-S. (= Pamphila osembo, Moschl.), a common Tropical- American species, has 

 the secondaries more produced at the anal angle, and the genitalia of the males very 

 peculiarly formed, but for the present it can remain here. C. virbius and G. fidicula 

 have a white patch on the secondaries above and beneath, a system of coloration 

 common to some of the species of Carystus. 



The chief characters of Cobalus are the moderately long antennae, with long crook, 

 the short terminal joint of the palpi, the very robust body, and the somewhat pointed 

 primaries in the male, which are without trace of a brand. All the species we refer 

 to it are of rather large size. 



The antennas are about half the length of the costa, and have a moderately elongate 

 club, terminating in a long crook. The third joint of the palpi is very short and bluntly 

 conical. The primaries are somewhat produced, and have the apex more or less pointed, 

 the costa being very slightly arched towards the base ; the cell is less than two-thirds 

 the length of the costa ; the discocellulars are strongly oblique, the upper one two or 

 three times the length of the lower, the latter a little 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 at some little distance before the 

 lower angle of the cell. The secondaries are more or less produced at the anal angle ; 

 the discocellulars are oblique, the upper one faint. The body is robust. The middle 

 tibiae are usually spined (except in C. virbius and some others) ; the hind tibia? have 

 two pairs of spurs. The primaries of the male are without trace of a brand, but 

 in C. carinas there is a pencil of hairs beneath the base of the first median branch in 

 this sex. 



The genitalia of the male of C. fidicula are very like those of C. virbius, but those 

 of the other species dissected are all more or less differently formed. C. argus has 

 a very long crook to the antennas, and it would be almost as well placed in the 

 genus Carystus. 



