102 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



TABLE OF SPECIES. 



1. At least first two tarsal joints yellow or yellowish red. Antennae 



elongate; apical cross vein rectangular or directed slightly inwards; 

 stigma about as long as distance between the tips of second and 



third vein; mesonotum with coppery vittae. (Group 1) 2 



Legs entirely dark 5 



2. Eyes with several linear markings 3 



Eyes with only a faint median transverse stripe 4 



3. Vertical markings on eyes very labyrinthine, last section of fourth 



vein at the middle with an inward angulation which bears a stump 

 and terminating beyond tip of the second vein; wings with blackish 



markings on the outer cells nitida Wied. 



The vertical markings on the eyes fairly regular; last section of fourth 

 vein without the angulation and stump; wings with spot only at tip 

 of second vein and sometimes one at tip of fourth vein, .bellula Will. 



4. Cross veins with brownish clouds pictipennis Loew. 



Wings entirely hyaline pulchella Will. 



5. Last section of fourth vein (apical cross vein) recurrent on its distal 



half; stigma only about as long as distance between the tips of 

 second and third veins; antennae not very small, sometimes elon- 

 gate; a whitish pollinose band extends across face just below anten- 

 nae, except in stigmata and possibly in nigrovittata, and below this 



band the face is rugulose. (Group 2) 6 



Last section of fourth vein directed obliquely outward in its distal 

 portion 13 



6. Third antennal joint approximately three times as long as broad. . 7 

 Third joint less elongate 8 



7. Pile on frons and ocellar triangle black nigrovittata Lw., d" 



Pile on frons and ocellar triangle whitish stigmata Will., d" 



8. Squamae and halteres darkened 11 



Squamae and halteres whitish 9 



9. The transverse pollinose band below antennae reduced almost to two 



spots at the eye margins; frons black; arista a little shorter than the 



antennae stigmata Will., 9 



The pollinose facial band complete and distinct; frons greenish 

 metallic 10 



10. The vittae on the mesonotum very faint, paler than rest of dorsum; 



arista a little longer than the antennae; rather large, robust species. 



robusta n. sp. 



Vittae on mesonotum coppery colored; arista a little shorter than 

 antennae; small species parva n. sp. 



11. Dark, greenish black species; pile on ocellar triangle and frons rather 



long and dark pacifica n. sp. 



Dark steel blue species with very short whitish pile on frons and ocellar 

 triangle 12 



