68 Journal New York Entomological Society. [Vol xxx. 



yellow markings. Professor McColloch verifies this by saying several 

 pairs were taken, the males showing the yellow markings. 



My studies show the following: 



Of the 34 specimens collected at Manhattan lo were males. 



Length of females, 20 mm. 



Width of females, 7 mm. 



Length of males, 16 to 17 mm. 



Width of males, 5 to 6 mm. 



These measurements are all larger than those given by Col. Casey. 



The yellow dots on the elytra average more nearly confluent on 

 males. Fascia at apical third extends toward apex and along suture 

 to apex. Apex of elytra always coppery. Thorax green to blue- 

 green. Smooth medial area of thorax brassy. The more brassy the 

 thorax the more pronounced the coppery ventral surface. 



Of the ten males one shows the pro-meso- and metasternum light 

 yellow. Another male, metasternum light yellow ; no other yellow 

 ventrally. Another male, metathorax yellow, widening toward apex. 

 Meso- and metasternum centrally yellow. Lateral mesosternum and 

 meso-episternum each with an inconspicuous yellow dot. First ventral 

 centrally yellow, widening apically, with central streak green. Incon- 

 spicuous lateral yellow dots. Second ventral, two medially placed 

 yellow dots lengthened laterally. Third ventral, two small medio- 

 laterally placed yellow dots. Fourth ventral with a central yellow line 

 parallel with ventral suture. Fifth ventral, yellow line basally on right 

 extending to near margin. Left side, a yellow dot. Underside of 

 posterior femurs yellow. Thorax, apical angle tipped with yellow. 

 Basal angle with yellow line extending along margin one third of 

 length of thorax. A short yellow line parallel to marginal line, one 

 third of distance from margin to central smooth spot. 



Another male marked as in preceding except that lateral yellow 

 dots are lacking on meso- and metasternum, and meso-episternum, and 

 laterally on first ventral. The yellow lines on the fifth ventral are 

 equal in length on each side. Thoracic yellow lines more restricted 

 than in preceding species ; yellow spots on elytra more nearly confluent 

 than the average specimen. 



From the above descriptions it is evident that there is marked vari- 

 ation in individuals of this species. 



