LIST OF HOMOPTEROUS INSECTS. 523 



'^ll. Triquetra ANGUSTATA. 



Ti'iquetra angustata, Fairm. Ann. Soc. Ent. Fr. 2me Serie, iv. 282, 

 11. 



Bogota. 



12. Triquetra truncaticornis. ' 



Triquetra truncalicornis, Fairm. Ann. Soc. Ent. Fr. 2me Serie, iv. 



282, 12. 

 Hoplophora truncaticornis, Germ. Silb. Rev. Ent. iii. 244, 11. 



Brazil. 



• P 13. Triquetra sobria, Fem. 



Flava ; prothoracis comu dorsale carinis.quadriradiatum ; comiia 

 lateralia, carina dorsalis, pectus et abdomen nirjra ; pedes 

 fulvi ; tibicB posticee apice picecB ; alee anticcBfuha. 



Yellow : head with a short black stripe which has a black dot 

 in front and two on each side: fore-chest thickly punctured, with a 

 short acute upright horn, from whose tip four ridges radiate on each 

 side ; each shoulder produced into a short compressed almost acute 

 horn, which is slightly inclined forward, mostly black and rather 

 broader than long ; keel black for three-fourths of the length from 

 the head, its tip acute, extending to the tips of the fore-wings : 

 breast partly black : abdomen black ; tip beneath ferruginous : legs 

 tawny, tips of hind-shanks pitchy : fore-wings tawny, punctured 

 towards the base ; veins ferruginuus : hind-wings paler. Length of 

 the body 4^ lines ; of the wings 9 lines. 



a. Quito. Presented by W. Hewitson, Esq. 



14. Triquetra venosa, Fem. 



Flava ; prothoracis carina nigra ; abdomen nigrum, apice fulvum ; 

 pedes fidvi ; alee anticce Jlavce, apice fulvce. 



Yellow : head and fore-chest thickly punctured : fore-chest with 

 a short acute horn which is slightly inclined forward ; three very 

 slight almost parallel ridges proceed from its tip on each side, and 

 join one of the longitudinal ridges which are strongly marked ; each 

 shoulder produced into a short compressed conical horn which is 



