\'ol. xxiv] 



ENTOMOLOGICAL NEWS 



313 



which partly tills the cleft when the prothorax is viewed from 

 in front, a median pair of slender approximated mesothoracic 

 processes just behind the prothorax. $ Abd. seg. 8 blue with 

 a transverse dorsal basal black or metallic green line or nar- 

 row stripe, 9 and 10 entirely pale blue; superior appendages 

 nearly as long but not as high as the inf. apps., seen in profile 

 view, o Abd. seg. 8 pale blue with a transverse basal stripe 

 and a lateral band reaching caudad therefrom dark metallic 

 green or black, or, the dorsum of 8 almost entirely blue- 

 black, sides inferiorly pale (1$), 9 blue with a triangular 

 black band each side in proximal half of segment. 10 en- 

 tirely blue. Abd. $ 9 20-22; hind wing 5 13-14.5. 

 9 14-15 mm gracilis 



JV. irene. 



y. gracilis. 



N. integricollis. 



N. speciosa. 



Figs. 1-4, hind part of prothorax of females viewed from in front and a little above, 

 the head of each specimen having been removed to see the prothorax clearly ; the dotted 

 lines show the boundaries of the median metallic green and the lateral pale green or 

 yellow. Figs. 5-8. dorsal views of abdominal segment 10 and appendages of males. 

 Figs. 9-12, profile views, right side of the same. .All the figures drawn to the same scale 

 with the camera lucida. specimens illuminated by direct sunlight. 



.V irene, 5, Lehigh Gap. Pennsylvania. July 13, 1900; cf. Berlin, New Jersey, July 

 17, 1893. .V. gracilis, $, Lehigh Gap, Pa., June 29, 1S97 ; c:f,Sherborn. Massachusetts, 

 June 24, 1895 (co-type of Morse). .V. integricollis n. sp , S, Enterprise, Fla.. .April 18, 

 1896 (type); cf, Haulover, Fla., March. A', speciosa, 5 <J , Robenhausen, Switzerland, 

 July 3, 1904. 



Hind margin of prothorax of 9 trilobed, no slender mesothor- 

 acic processes as described for gracilis but the mesostigmal 

 laminae are larger and more projecting than in that species. 

 $ Abd. seg. 8 dark metallic green, a mid-dorsal spot on the 

 posterior fourth or less and the sides inferiorly pale blue, 9 

 pale blue with a triangular dark metallic green spot on each 



