122 Annals of the Carnegie Museum. 



Mesepimeral part of the forked humeral stripe 

 pale brownish, abd. seg. io black. 



gerhardi. 

 EE. A pale mid-dorsal stripe on abd. seg. 3 only, 

 or a mere line on 3-6. 

 F. Abd. seg. 10 pale on dorsum. 



F. I. Labrum largely or wholly black, me- 

 sostigmal lamina erect and pro- 

 jecting, mesepimeral branch of 

 the black humeral stripe reaching 

 to the upper margin of the sclerite. 



difficilis. 



F. 2. Labrum pale, mesostigmal lamina a 



carina forming the anterior margin 



of a groove mollis. 



FF. Abd. seg. 10 black, labrum pale, mesep- 

 imeral branch of the humeral stripe pale 

 brown. 



Someger/iardi. (See above under E.) 

 CC. 2. Antenodal cells on front and hind wings 3. 



Black of frons reaching down to nasus, mid-dorsal blue on 3 



and 4 a mere line tinctipennis. 



Black of frons reaching only as far down as the level of the 

 first antennal joint or not so far, mid-dorsal blue on 3 and 4 

 a stripe. 



Black humeral stripe of subuniform width, not forked, but 



enclosing a very small pale spot superiorly.... bviacudo. 



Black humeral stripe widening considerably in its upper 



third, which is forked, humeral branch more than a 



line chapadce. 



Black humeral stripe widening in its upper third on half, 

 which is forked ; humeral branch hardly more than a 



line .' smithiana. 



BB. (not represented). 



BBB. These markings consisting of two stripes as long as 8 and nearly as 

 long as 9. 

 BBB. I. Antenodal cells 5 on the front wing, 4 on the hind. 

 G. Mesepisternal tubercles well-developed. 



H. Abd. seg. 10 pale with a pair of dark spots on the dorsum. 



translata. 

 HH. Abd. seg. 10 pale, unspotted on dorsum. 

 J. (not represented). 



JJ. Thoracic dorsum and usually the vertex, nasus, and 

 labrum also, with a coppery-red reflection. 



cupranrea (and cuprea). 

 GG. Mesepisternal tubercles absent. 



