234 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull. 



the stripes a little more ^ust3^ AVings yellowish siibhyaline, the 

 costal border and stigma clearer yellow. Abdominal tergites wath a 

 lateral series of black dashes, 's . L. 11 - 12 mm. ; w. 12 - 13 mm. 

 $ . L. IG - 17 mm. ; w. 13 - 14 mm. 



(May-Sept.) Ont.. Que., N. S., Me., N. H., Vt., Mass., N. Y., Pa., westw. to Wise, 

 soutliw. to Va., N. C, and Tenn. 



Connecticut.— Bran ford, Aug. 22, 1904 (H.W.W.); Danbury, June 15, 1909 

 (C.W J.); New Haven, May 27, 1904 (W. E. B.), June 8, 1904 (W. E. B.), June 

 9 1905 (B. H. W.); Storrs, May 1933; Tolland, June 23, 1932 (N. T.); Westville, 

 June 11, 1905 (W. E. B.), June 13, 1907 (W. E. B.). 



N. t. hamata (Dtz.) (Dietz, Trans. Amer. Ent. Soc, 44: 121; 1918) 



Fig.— Dietz, Ibid., pi. 7, fig. 28 (hyp.). 



Difl'ers from typical femds in genitalic structures. Gonapophyses 

 rod-like, strongly bent at midlength. 



(Aug.) N. Y. 



Considered by Prof. Rogers as a straight synonym of tenufs. 



N. t. nigroantennata (Dtz.) (Dietz, Trans. Amer. Ent. Soc, 

 47:261; 1921) 



Differs from typical tenuis in the entirely dark brown antenna! 

 flagelhim. 



(July) Pa. 



Held by Prof. Rogers as being well within the normal color 

 range of typical tetvais and not separable therefrom. 



N. virescens (Lw.) 



1S()4. J*achyrrhina virescens Loew; Berlin, Ent. Zeitschr., 8:62. 



Coloration in life strongly greenish, paling to yellow in preserved 

 specimens. Occipital brand lacking. Median praescutal stripe divid- 

 ed by a pale line ; lateral stripes and scutal areas chiefly reddish ; 

 anterior ends of all stripes, a U-shaped mark at end of suture and a 

 lateral spot on each scutal lobe intense velvety-black. $ . L. 10 - 12 

 mm.; w. 10-12 mm. 



(June-Sept.) N. H., Mass., N. Y., N. J., Pa., westw. to 111., and Mich., southw. 

 to Tenn., S. C, Ga., and n. Fla. (Transition, Austral). 



Connecticut.— East River, Aug. 24, 1910 (Ely) ; Kent Falls, July 23-24, 1931 

 (C.P.A.). 



N. vittula (Lw.) 



1864. Fachyrrhina vittula Loew ; Berlin. Ent. Zeitschr., 8 : 63. 



Posterior vertex with a narrow but very conspicuous black vitta. 

 Praescutal stripes and pleural markings black; scutellum yelloAv; 

 mediotergite with a brown median line. Wings grayish subhyaline; 

 stigma subfuscous. Abdominal tergites trivittate with black, the 



