56 PEOF. p. E. tTHIiEK — ENFMEEATION OF THE [Jan. 15, 



much smaller than the females. The fully-coloured and well- 

 matured specimens are greenish, \^-ith the silvery pubescence and 

 white bloom coating the surface thickly. Immature and freshly- 

 excluded specimens hare the costal margin and veins of the wing- 

 covers rufous or yellowish and most of the body testaceous. 

 The hroad black stripe current from the head to base of pronotum 

 is absent, or nearly so, in the pale varieties, as are also black, 

 bands firom the femora and tibiae. There is scarcely a substantial 

 character now remaining to separate this species from P. alhida, 

 Oliv. ; and now, as our collections are growing large, the species 

 of this genus are becoming more comprehensive and less distinctly 

 separable. 



This small form inhabits also Jamaica, Cuba, San Domingo, and 

 St. Thomas. The next size larger is found in Mexico and Central 

 America. 



PbOAHNA SQITAillGEBA, sp. nOV. 



Luteous or pale green, more or less clothed with scale-like, 

 prostrate, silky pubescence, which readily rubs off. Head short, 

 blunt, the vertex deeply grooved on the middle line, closely hairy, 

 marked \dth a black band on the area of the ocelli, and sometimes 

 with a black tubercle each side ; the front almost flat on top and 

 hairy, smooth, and yellow in the middle of this part, from each side 

 of which a curved black stripe converges towards the middle and 

 continues down to near the clypeus ; the transverse grooves 

 almost straight, but not quite symmetrical ; cheek between the 

 eye and front dark brown and coarsely wrinkled ; clypeus smooth, 

 pale, usually marked with a brown spot ; the rostrum pale, tipped 

 with piceous, reaching between the posterior femora ; first and 

 second joints of antennae piceous black, excepting the ends, the 

 following joints growing paler towards the tip. Pronotum 

 narrowing anteriorly, curving well over the base of the head, 

 having the sutures mostly black, and with an oblique black streak 

 each side of the middle of the dorsal wedge, and sometimes with a 

 double streak each side behind it ; the lateral margin widely 

 reflexed, and carried as a wide lobe much below the line of the 

 eyes, the humeral angle broadly lobate and turned up ; mesonotum 

 smooth, very moderately convex, usually marked at base with four 

 obconical black stripes, of which the two inner ones are most 

 distinct and shorter ; the space in front of the mesonotal cross 

 wide, deep, and often infuscated, the cross quite prominent, short, 

 and less deeply sinuated behind. Legs greenish, yellow when 

 faded, usually with a black spot near the base and tip of the 

 femora, and with the knees and end of tibiae, more or less of the 

 tarsi, and the tip of the nails blackish piceous. Wing-covers 

 vitreous, tinged with green in the matured insect ; the veins 

 greenish, interrupted with dark bro\^ii on the apical series, the 

 anastomosis at tip of costa marked with a black fork ; base of the 

 first forked vein hack of this has a dark spot, and the next vein 

 inward from this has also a dark spot ; veins of the base of the 



