No. 64] DIPTERA OF CONNECTICUT : TAXONOMY 225 



Prof. Roarers is of the opinion that this specias and form may 

 represent extreme melanistic types of lugens and be placed as sub- 

 species under that species. 



N. approximata (Dtz.) 



1918. Pachyrhina approximata Dietz; Trans. Amer. Ent. Soc, 

 44:136-137. 



Figs. — Dietz, Ibid., pi. 5, fig. 19 (wing) ; pi. 7, fig. 2>?i (hyp.). 



Close to hreviorcornis. Antennae {$) long, slender, if bent back- 

 ward extending to beyond base of abdomen: flagellar segments brown, 

 ferruginous at bases. Occiput shiny; median stripe dark. Thoracic 

 stripes rusty brown. Wings grayish; stigma brownish yellow. Ab- 

 dominal tergites with black lateral stripes, margined posteriorly with 

 brown. $ . L. 12 mm. ; w. 12 mm. 



(Aug.) Pa. 



Considered by Prof. Rogers as being identical with hreviorrornis^ 

 the supposed differences in coloration of the abdomen apparently be- 

 ing due to post-mortem changes. 



N. beutenmuelleri (Dtz.) 



1918. Pachyi'h'ma heutenmuelleri Dietz; Trans. Amer. Ent. Soc, 44: 

 130-131. 



Fig. — Dietz, Ibid., pi. 5, fig. 14 (wing). 



Close to fei^uginea. Flagellum beyond basal segment blackish; 

 a dark brown orbital spot; occipital brand shiny, rusty, produced 

 cephalad to summit of vertical tubercle. Thoracic stripes rusty; lat- 

 eral ends of suture blackened. Abdominal segments bordered laterally 

 and posteriorly with black. S . L. 10.5 mm. ; w. 10.5 mm. 



(Sept.) Pa.— N. C, westw. to Mich. Recorded by Dickinson (1932) from Wise, 

 perhaps erroneously. 



Prof. Rogers considers this to represent only a variant, or per- 

 haps merely an individual variation of ferruginea. 



N. hreviorcornis (Doane) 



1908. Pachyrhina hreviorcornis Doane; Ent. News, 19:178-179. 



Fig.— Dickinson, Cfls. Wise, p. 219, fig. 126 (wing) ; 1932. 



General coloration yellow; thoracic stripes reddish brown. An- 

 tennae with flagellar segments gently excised on lower face. Abdo- 

 men with rows of spots; median tergal row less distinct behind. $ ._ 

 L. 13-14 mm.; w. 12.5-13 mm. 



(June, July) Ont., Que., N. H., Mass., N. Y., westw. to 111., Mich., Wise, and la., 

 southw. to N. C. and S. C. 



Connecticut.— Kent Falls, June 12-13, Tulv 23-24. 1931 (C. P. A.) ; Union, Aug. 17-18, 

 -; 1928 (C. F. C.) ; W. Granby, June 8, 1929 (C. P. A.). 



