LIST OF HOMOPTEROUS INSECTS. 131 



Genus TRIQUETRA, Cat. Horn. p. 521.0 



Triquetra oppugnans. 



Testacea ; prothorax viridis, nitens, punctatus, nigro carinatus, 

 teslaceo notatvs et marginatus ; cornna lateralia nigra, longa, 

 lanceolata, subplana, apice subrotundata ; cornu dorsale ahum, 

 erectum, acutnm, valde compressum ; alee anticce nigro-cinerea, 

 posticcB subcinerece. 



Testaceous. Prothorax green, shining, strongly punctured, 

 with some testaceous marks, with testaceous borders, and with 

 a black keel ; dorsal horn high, erect, acute, much compressed ; 

 lateral horns long, lanceolate, black, almost horizontal, smooth, and 

 somewhat rounded at the tips. Fore wings blackish gray ; veins 

 black. Hind wings grayish. Length of the body 4 lines ; of 

 the wings 10 lines. 



a. Venezuela. From Mr. Birschell's collection. 



Triquetra testacea, Cat. Horn. p. 522. 

 a. Constancia, Province of Rio. Presented by J. Gray, Esq. 



Genus CERESA, Cat. Horn. p. 525.^ 



Cebesa Bubalus, Cat. Horn. p. 531. 

 a. New York. From Dr. Fitch's collection. 



" Ceresa uniform is, Cat. Horn. p. 533. 

 a. Mexico. From Mr. Gleunie's collection. 



Ceresa taurina.\) 



Testacea ; prothorax testaceo-viridis ; prothorax cornubus apice 

 nigris, carina nigricante, lateribus albido guttatis ; alcevitrea, 

 venis pallidis. 



Ceresa taurina, Harris. 



a. New York. From Dr. Fitch's collection. 



