024 LIST OK HOMOPTEUOUS INSECTS. 



broader than lonff and hardly inclined forward ; keel black, except 

 at the tip ol the horn, for three-fourths of the length from the head ; 

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

 black, tawny at the tip : legs tawny : fore-wings yellow and thickly 

 punctured for nearly two-thirds of the length froin the base, tawny 

 from thence to the lips ; veins yellow, tawny towards the tips: hind- 

 wings paler. Length of the body 3J lines ; of the wings 7 lines. 

 a. Columbia. From Mr. Turner's collection. 



15. Tkiquetra reticulata. 



Fulva ; prntfwracis corrm dnrsale quadricarinatum ; carina dor- 

 salisjlava ; pectus nigrum ; ala anticte fulvrc. 

 Tawny : fore-chest thickly punctured, here and there slightly 

 pitchy, with a short acute upright horn ; four very distinct slightly 

 diverging ridges proceed from this horn, and join "one of the longi- 

 tudinal ridges; the latter are very strongly marked and almost 

 parallel; each shoulder produced into a short compressed conical 

 horn which is broader than long and not inclined forward ; keel 

 yellow along the whole length, extending to the tips of the fore- 

 wings, ending in an acute tip: breast black : legs tawny: fore-wings 

 tawny, punctured for more th<in half the length from the base ; veins 

 tawny : hind-wings paler. Length of the body 3i lines ; of the 

 wings 7 lines. 



a. Columbia. From Mr. Turner's collection. 



16. Triquetra valida, Mas. 



Fulva; cornua taleratia exlits nigra; carina dorsalis flam, ferrit- 

 gineo univiltata, nigra oblique biviltata, apice nigra ; pectus, 

 abdomen, pedes et al<e ferruginea. 



Tawny, pubescent, shining: head transverse, minutely punc- 

 tured, almost triangular, very much narrower than the fore-chest, 

 impressed on each side of the disk ; face with a sliglit furrow on 

 each side ; its hind border rectangular and occupying rather less 

 than half the length of the head : fore-chest roughly punctured, 

 rounded and with a very slight ridge in front where there is a 

 smooth mark on each side ; on each shoulder an acute prominent 

 horn whoso outer compartment is slightly concave and mostly 

 black ; keel yellow, rather deep, convex and with a ferruginous 

 stripe along the ridge for full half the length where it declines, 

 and is straight, shallow and tapering from thence to the tip which is 



