352 ENTOMOLOGICAL NEWS. [Oct., 'l6 



color, reach over and cover the anterior surface of the first joint of 

 the antennae ; in such a case their quadrangular shape is of course 

 entirely lost. Corresponding to the variation in nasus and frons in 

 front, there is decided variation in the marking of the head above ; 

 in the darkest individuals the entire head above is black, with yellow 

 postocular spots slightly larger than a circle enclosing the ocelli ; in 

 the palest coloration the yellow markings are as follows : The pale 

 color of the frons in front encroaches on the frons above; back of 

 the antenna and on either side of it are two spots, the inner one of 

 which is connected posteriorly with a spot or stripe which ends oppo- 

 site and close to the lateral ocellus ; there is a 3-pronged spot in 

 front of and between the lateral ocelli, and a crescent-shaped spot in 

 front of the median ocellus ; and the occipital crest is narrowly yel- 

 low ; the two spots back of the antenna may fuse with each other and 

 with the stripe to the lateral ocellus ; and the pale crescent in front of 

 the median ocellus may fuse on either side in front with the pale color 

 of the frons ; in such a condition the head above is, of course, largely 

 yellowish or reddish brown, depending on age and it may be described 

 in terms of the black markings as follows : A more or less regularly 

 elliptical median black spot on frons above ; an irregular stripe starts 

 from two points, the median ocellus and the lateral ocellus, and runs 

 forward and outward to the edge of the frons, then turns at a right 

 angle and runs backward and outward through the antenna to the 

 eye ; some black about the ocelli ; and postocular spots black-bordered. 

 In young males the postocular spots and any markings on the occipital 

 crest are pale blue, the markings of the face are slaty, but the pale 

 markings on the dorsal surface of the head are distinctly yellowish. 

 Rear of head as in kennedii. 



Prothorax and thorax similar to kennedii but with the yellow 

 brighter and clearer on fully colored specimens. The spot on the me- 

 dian lobe of the prothorax is often larger; the posterior lobe may be 

 largely or entirely pale-bordered behind, and in some cases there is a 

 median geminate yellow spot on the median lobe. In fully colored 

 males the antehumeral stripe is clear yellow or orange, pale blue in 

 young specimens ; the humeral black stripe is slightly less developed 

 than in kennedii and is sometimes reduced on the mesinfraepisternum 

 to an obscure line ; superiorly it is narrowed from both sides, the pos- 

 terior side not giving the impression of being notched as usually in 

 kennedii, and the black spur or line on the first lateral suture above 

 is weak and linear and without any tendency to fuse with the humeral 

 stripe to enclose a pale spot. In the same way the spot above on the 

 second lateral suture is reduced and usually no trace exists of a line 

 parallel to the suture on the metepisternum ; rarely there is a short 

 obscure line. The sides of the thorax are much yellower than in 



