LIST OF HOMOPTEROUS INSECTS. 53 



Female. Black. Vertex rather short, with two tubercles on 

 each side, and with a transverse ridge in front. Front slightly 

 rugulose, with an indistinct and incomplete middle keel, and with 

 a depression on each side in front. Face like that of P. discrepans. 

 Prothorax slightly rugulose, with four tubercles in front, a slight 

 transverse furrow, and a slight hiudward transverse ridge. Meso- 

 thorax with a middle keel, and in front a transverse curved ridge, 

 which forms an angle on each side. Abdomen red above, and with 

 a red border beneath. Wings like those of P. discrepans, vitreous 

 towards their tips, but the apical part in the fore wings is slightly 

 grayish, and contains some darker marks. Length of the body tl 

 lines ; of the wings 16 lines. 



a. Constancia, Province of Kio Janeiro. Presented by the Rev. 

 Hamlet Clark. 



PoiOCERA DISCREPANS. 



Nigra; vertex brevissimwi ; frons subrugulosa, carinis tribus vix 

 conspicuis ; fades scite rugulosa^ carinis duabus antice con- 

 nexis ; prothorax subrugulosus ; ^ mesothorax tricarinatus ; 

 alcp anticcB apices versus confertissime venosa et nonnunquam 

 subvitrecB ; posticce nigricanles. Mas. — Caput latum ; abdo- 

 men subiusjiavum. 



Black. Vertex very short. Front slightly rugulose, with 

 three almost obsolete keels. Face more minutely rugulose, with 

 two slight smooth keels, which converge and are united towards the 

 proboscis. Prothorax slightly rugulose, slightly furrowed trans- 

 versely. Mesothorax with three slight keels. Fore wings with 

 very numerous veins and veinlels on the apical third part. Hind 

 wings blackish. iMale. — Head much broader than that of the 

 female. Prothorax more distinctly furrowed. Abdomen yellow 

 beneath Var. j3. — Abdomen with a broad black stripe beneath. 

 Fore wings vitreous, and slightly grayish towards the tips. Length 

 of the body 4 lines; of the wings 11 — 12 lines. 



a, b. Constancia, Province of Rio Janeiro. Presented by the Rev. 

 Hamlet Clark. 



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