—84— 



common species in Cosla Rica and near Panama. I have seen, also, 

 specimens from Demerara, and from the region of the lower Amazon, 

 l)eyond Para. 



Il is a much narrower iorm than the P. pulverca, Oliv. , and has the 

 curved vein of the costal anastomosis more slender, and not black as in 

 that species. 



Forms which partly connect the two foregoing species occur at San- 

 tarem, also in Peru near the headwaters of the Amazon, also otliers in 

 the province of Rio de Janeiro, and near Montevideo. The males in 

 this section of the genus usually have a spur at the apex of the tegulce. 



3. P. sallei, Stael. (Proarnn,) Stettin Ent. Zeit., Vol. XXV, 1864, p. 61. 

 Inhabits the vicinity of Vera Cruz, Mexico. 



4. P. championi, Di^t. Biol. Cent. Amer. Hemipt. Homopt. 18S1, p. 12, No. 4. 

 It has been taken in the [)rovince of Tamaulipas, and other parts of 



Mexico, and has been reported by Mr. Distant as having been found in 

 Guatemala and Costa Rica. 



5. P. signifera. Walk. [Cliada,) British Mus. List Homopt. Supp]., p. 22. 



Ptoarna signifera, Dist. Biol. Cent. Amer. Homopt., iSSi, 

 p. 13, No. 5. 

 This appears to be a common species in Northern Mexico ; but Mr. 

 Distant cites other localities for it, as Orizaba, \'alladt)lid m Yucatan, and 

 Torola, Guatemala. 



6. P. maura, Dist. Biol. Cent. Amer. Homopt., 1881, p. 13, pi. II, fig. 5. 

 This is a common species in ]Mexico and is very variable in size. It 



is reported also from Yucatan by Mr. Distant. 



7. P. longirostris, Dist. Biol. Cent. Amer. Homopt., 1881, p! 13, pi. II, fig. 4. 

 Inhabits Mexico. It resembles the preceedmg species in form, but 



has a much longer rostrum, and lacks the broad tract at the base of the 

 wings. 



8. P. valvata, new sp. 



Robust, form nearly that of P. maura, Dist., piceous-black. Head including the 

 eyes scarcely wider than the fore part of the pronotum; vertex depressed, transversely 

 impressed, and excavated at each end of the impression; three longitudinal deeply 

 impressed lines, of which the middle one is interrupted by the central ocellus, and 

 the lateral ones start above in a concavity and unite below with the boundary incis- 

 ures of the front ; an oval ochreous spot occupies a sunken spot before the central 

 ocellus, a similar spot is placed at the upper end of each lateral incised line, the an- 

 terior margin of the supra-antennal plate is also ochreous, and there is a long ovate 

 spot of the same color on the summit of the front ; face tawny or testaceous, sericeous 

 pubescent, front having the middle impressed line obsolete, the costate lines sharply 

 defined each side ; rostrum reaching to behind the middle coxa; ; antennas tawny 





