LIST OF HOMOPTEROUS INSECTS. 131 



Genus TRIQUETRA, Cat. Horn. p. 521. 

 Triqdetea oppugnans. 

 Testacea ; proikorax viridis, nitens, punctatus, nigra carinatus, 

 testaceo notattis et marginatus ; cornua laieralia nigra, longa, 

 lanceolata, subplana, apice subrotundata ; cornu dorsale ulium, 

 erectum, acutum, valde compressum ; alcB anticcp nigro-cinerece, 

 posticcB subcinerecB. 

 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 CERES A, Cat. Horn. p. 525. 



Ceeesa 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 nigricantef lateribus albido guttatis ; altevitrece, 

 venis pallidis. 



Ceresa taurina, Harris. 



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



