HYALOPTERUS TRIEHODA. 115 



Body sliglitly mealy, wholly yellowish green ; oval, 

 smooth and shining. Eyes reddish brown. Cornicles 

 small and cylindrical. Cauda yellow. Tibial tips and 

 tarsi brown. 



Pupa. 



Not unlike the larva. Thoracic lobes yellow and 

 prominent. Wing-cases olive-green. Stemmata evi- 

 dent under the integument. 



Winged viviparous female. 



Inch. Millimetres. 



Expanse of wings 0*260 6'60. 



Size of body 0-070x0'025 l-77x0-62. 



Length of antennsD 0'065 1'64. 



,j cornicles 0*005 0'12. 



Stout. Head broad and black. Antennae rather 

 long, third joint the longest, and either serrated or 

 strongly tuberculate. Prothorax, thoracic lobes, 

 scutellum, and a semicircular streak on the first abdo- 

 minal segment black ; also a broad irregular patch on 

 the dorsum, black. Femoral and tibial tips, and also 

 the tarsi, black. The rest of the insect green, and 

 without any mealy covering. Wings ample and 

 rounded ; insertions and cubitus yellow ; stigma grey. 

 Like others of this genus the rostrum is very short, 

 and does not reach to the second coxa. Some speci- 

 mens have dark lateral abdominal spots. 



Found in companies of thirty and upwards on the 

 leaves of the common columbine, Aquilegia vulgaris, 

 from June to September. Mr. Walker first noticed it 

 feeding on the rose in May, from which, he states, it 

 migrates to the columbine. 



On account of priority of discovery, it should retain 

 the name Mr. Walker originally gave it, and there- 

 fore I restore it. 



From its rounded wings and serrated antennas, this 

 insect somewhat departs from the type of its genus. 



