1893.] im. B. T. WATSON ok the hespeeiid^. 21 



4. Genus Plestia. (Plate III. fig. 4.) 



Plestia, Mabille, Le Naturaliste, p. 146 (1888). 



Type, staudingeri, Mab- 



Antennae : club rather flattened, sickle-shaped, the thickening 

 and tapering very gradual, terminating in a fine joint. Fore wing : 

 male with a costal fold ; cell more than two thirds length of fore 

 wing ; upper discocellular minute ; middle and lower discocellulars 

 inwardly oblique, the middle the longer ; vein 9 equidistant from 8 

 and 1 ; vein 2 from near base of wing ; rein 3 about four times as 

 far from 2 as from 4 ; vein .5 nearer d than 4. Hind wing pro- 

 duced into a short tail : vein 5 wanting ; discocellulars barely 

 traceable ; vein 3 froxn just before end of cell ; vein 2 rather nearer 

 to 3 than to base of wing. 



dor us, Edwards 1. 



Habitat. The Mexican subregion. 



"o* 



.5. Genus Tarsoctenus, uov. (Plates I. fig. 6; II. fig. 13.) 



Type, plutiu, Hewitsou. 



Allied to Phocides. 



Antennae : club moderate, with a slender terminal hook. Palpi : 

 second joint densely scaled ; third joint naked, more prominent than 

 in Phocides. Fore wing : male with costal fold ; cell considerably 

 more than two-thirds length of costa ; discocellulars slightly obhque, 

 middle slightly longer than lower ; upper discocellular very short ; 

 vein 3 about half as far again from 2 as from 4 ; vein 2 nearer to 

 base of wing than to vein 3. tliud wing with a distinct lobe at end 

 of vein 1 b ; vein 7 well before end of cell ; discocellulars very faint, 

 slightly outwardly oblique ; vein 5 barely traceable ; vein 3 rather 

 nearer to end of cell than to vein 2 ; vein 2 almost equidistant from 

 base of wing and from end of cell. Hind tibiae in both sexes very short, 

 with only a terminal pair of spurs. In the male one of these spurs 

 is much produced, and the proximal end of the tarsus bears beneath 

 on either side a comb of yellowish bristles which, when the tarsus is 

 straightened out, enclose the lengthened spur. This character is 

 less developed in papias than in the other species of the genus. 



* plutia, Hew 1. 



f corytas, Cram 2. 



Xiyyramus, Cram. 



*prcecia, Hew 3. 



* papias, Hew 4. 



One species, yaudialis, Hew., also belongs to this genus, but it 

 is not ui the British Museum. 

 Confined to tropical America. 



6. Genus Phocides. (Plates I. fig. 5 ; III. fig. 2.) 

 Phocides, Hiibn Verz. p. 103 (1816). Type, palemon, Cramer. 

 Erycides, Hiibn. Verz. p. 110 (1816). Type, pigmalion, Cramer. 

 Bysenius, Sc. Syst. Rev. p. 46 (1872). type, albicilla, H.-S. 

 Antennae: club rather robust, extremity very fine, forming a hook 



