930 COXNECTICtri' GEOL. -VXD NAT. IHST. SURVEY [Bllli. 



Connecticut.— East River, July 26, 1911 (F:iy) : Hartland, June 9, 1929 (C. P.A.)- 

 Kent Falls. June 12-13. 1931 (C.P.A.): Norfolk. July 24, 1931 (C.P.A.); Sap- 

 tree Run State Park. June 14, 1933 (C. P. A.); Union, June 14. 1933 (C. P. A.) 

 Windsor, Aug. 6, 1929 (C. P. A.). 



N. m. atrocera (Dtz.) (Dietz, 1. c, U:nS: 1918) 



As in tv])i('al form but with antennal Hao-elhiiii uniformly brown - 

 isli black to black. Abdomen with terminal seirments sli<>htlv mor* 

 blackened. 



(June, July) Ct., Pa. 



Connecticut.— Saptree Run State Park, June 14, 1933 (C. P. A.). 



Considered by Rogers as a somewhat melanistic individual of 

 ■macror('/'(f. 



N. m. gnata (Dtz.) (Dietz. 1. c. 44: 118; 1918) 



JVIale hypopygium with 8th sternite terminating in a median 

 conelike sirncture; in typical macrocera, terminating in two digiti- 

 form lobes. 



(Aug.) Wise. 



Prof. Rogers places this in the strict synonymy of macrocero.. 



N. m. dietziella nom. nov. {rirqata Dietz, Trans. Amer. Ent, Soc, 

 47:2r)0; 1921, nee vh-gata Coquillett, 1898) 



Abdomen with posterior and lateral borders of abdominal ter- 

 gites black. 



(July. Aug ) Me., Pa. 



N. obliterata (Dtz.) 



1918. Pachyrhind. oblHerata Dietz: Trans. Amer. Ent. Soc. 44:133- 

 134. 



Figs.— Dietz, Ibid., pi. 5. fig, 15 (wing), pi. 7, fig. 31 (hyp.). 



Close to imnthostigma. General coloration polished sidfiir-yel- 

 low ; lateral ends of praescutal stripe suffnsed with black. Antennae- 

 relatively short; flagellar seginents bicolorous, blackened basally. 

 Abdomen with a dark dorsal stripe and lateral dashes. $ . T. 14 mm*. : 

 w. 12.5 mm. ?. L. 10-17 nnn.; w. 15-15.5 mm. 



(July, Aug.) Out., Pa., Mich. 



. A .synonym of .^odaV/s, according to Prof. Rogers. 



N. occipitalis (Lw.) 



Lse.J. Pdclii/ri'h'nui. (>(■(■} p'/fdlis Loew" ; Berlin. Ent. Zeitschr.. 8:65. 



General coloration yellow, the praescntal sti-ipes reddish to ochra- 

 ceous. A narrow dark brown stripe on posterior vertex and occiput. 

 Wings grayisji yell(>w: stigma yellowish. Abdominal teraites with 



