LIST OF HOMOPTEROUS INSECTS. 523 



11. Triquetra ANGUSTATA. 



Triquetra angustata, Fairm. Aim. Soc. Ent. Fr. 2me Serie, iv. 282, 

 11. 



Bogota. 



12. TRiaUETRA TEUNCATICORNIS. 



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



282, 12. 

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



Brazil. 



13. Triquetra sobbia, Fem. 



Flava ; prothoracis cornu dorsale carinis quadriradiat.um ; comua 

 lateralia, carina dorsalis, pectus et abdomen nigra ; pedes 

 fulri ; tibia fosticce apice picea ; aUe anticce fulvcc. 



Yellow : bead willi 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 ferruginous : hind-wings paler. Length of 

 the body A\ 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 ; alec antic(e Jiavcc, apice fulvce. 



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

 a short acute horn which is slightly inclined lorward ; three verv 

 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 



