ZYG^NID^. 115 



3. P. Geryon, Huh. — Expanse | to 1 inch. AntennaG 

 short and thick ; fore wings short, rather dark bronzy-green. 



Antennae rather short, in the male pectinated for two- 

 thirds of their length with distinct flat laminae lying 

 obliquely forward, then thickened and solid to the apex; 

 in the female with a few pectinations near the base, thence 

 solid and thicker than in the male ; in both sexes very blunt ; 

 shaft glossy green, pectinations and lower side blackish. 

 Head, thorax, and abdomen bronzy green, very glossy. Fore 

 wings shorter and more blunt than in P. statices, with fairly 

 straight margins ; apex rounded ; hind margin oblique ; dark 

 bronzy green, golden green, or bluish-green, rather thinly 

 scaled and with nervures slightly ridged at the base ; cilia 

 green mixed with grey. Hind wings dark smoky grey with 

 darker nervures and cilia. Sexes very similar. 



Underside of the wings smoky grey, with a few longi- 

 tudinal streaks of bronzy green ; legs and body of a brilliant 

 green. 



Not, apparently, very variable, but like its allies, apt to 

 turn dark red under the influence of damp, and the abdomen 

 very liable to remain of a rich bright purple-red. 



On the wing in June and July. 



Larva nearly half an inch long; plump, rounded, 

 somewhat fusiform. Head very small, glossy black, re- 

 tractile ; dorsal plate blackish edged with yellowish in front ; 

 back and tubercles dingy white or pale yellow, the latter 

 large and those of the back elongated, all set with short fine 

 bristles; skin between them studded with minute star-like 

 dots ; dorsal line purplish brown, divided down the middle 

 with whitish ; subdorsal lines waved and claret colour ; below 

 is a broad lateral band of reddish brown extending to the 

 spiracles, which are ringed with black, and below which are 

 longitudinal stripes of flesh colour and pale brown ; legs 

 ringed with black ; prolegs yellowish. The very young larva 

 is yellow, but its tubercles with hairs soon appear ; then the 



