LIST OF HOMOPTEROUS INSECTS. 1041 



312. Aphis Veratri. 



Nigra, ovata, convexa, obscura, cinereo pollinosa ; antenna corporis 

 dimidio vix breviores ; cornicula corporis deeima longitudine ; 

 pedes albi, femoribus tibiisque apice tarsisque nigris. 



The viviparous wingless female. Black, oval, convex, small, not 

 shining, with a slight gray bloom : feelers nearly half the length of 

 the body : nectaries about one-tenth of the length of the body : 

 legs white ; feet and tips of thighs and of shanks black. A. Rumi- 

 cis, Var? From Veratrum album. Length of the body f line. 



Switzerland. 



313. Aphis triphaga. 



Nigra, fusif or mis, viridis, aut nigro-viridis, albo pollinosa; an- 

 tenna basi jiavm, corporis dimidio vex breviores ; cornicula 

 alba, apice nigra, corporis deeima non longiores ; pedes jftavi, 

 tibiis apice genubus tarsisque nigris. 



The viviparous wingless female. Small, spindle-shaped, very 

 variable in colour, being either black, dark olive-green, or dull red, 

 always covered with white bloom : feelers black, pale yellow towards 

 the base, hardly half the length of the body : mouth pale yellow, 

 with a black tip : nectaries white, hardly one-tenth of the length of 

 the body; tips black: legs pale yellow, moderately long; knees, 

 feet, and tips of shanks black. On Epilobium. 



England. 



314. Aphis inhjerens. 



Pallideflava, subovata, depressa, setosa ; antennae gracillinus, cor- 

 poris dimidio paullo breviores ; cornicula brevissima ; pedes 

 breves. 



The viviparous wingless female. Pale yellow, flat, bristly, in- 

 creasing in breadth from the head, till near the tip of the abdomen : 

 mouth nearly reaching the middle hips: feelers very slender, rather 

 less than half the length of the body; fourth joint much shorter 

 than the third ; fifth a little shorter than the fourth ; sixth as long 



PART IV. 3 Y 



