No. 64] DIPTERA OF CONNECTICUT: TAXONOMY 4G1 



$. L. 4.2-4.5 mm.; w. 5-5.5 mm. 

 (July, Aug.) Mass., Pa. 



E. {Ilisia) venusta O. S. 



1859. Erioftera venmta Osten Sacken; Proc. Acad. Nat. Sci Phil- 

 adelphia, 1859:227. 



Figs.— Osten Sacken. Ibid., pi. 4. fig. 23; 1859. Ostcn Sacken, Mi.n. Dipt. N. 

 Amer., 4, pi. 1, fig. 17 (wing), pi. 4, fig. 16 (hyp.); 1869. Nccdham. 23rcl Kept. 

 N. Y. St. Ent. for 1907, pi. 23, fig. 4 (ven.) ; 1908. Alexander. Cfls. N. Y.. 1, pi. 35, 

 fig. 80 (wing) ; 1919. Dickinson, Cfls. Wise, p. 193, fig. 77 (wing) ; 1932. 



General coloration of thorax dark brown, the i)riu'sciituin con- 

 spicuously paler, brownish yellow. Fore femora with two narrow 

 brown rings, the remaining femora with a single subtermiiial annulus; 

 tibiae entirely yellow. $. L. 4.5-5 mm.; w. 5-5.5 nun. 9. L. 5-() 

 mm. ; w. 5.5-6.5 mm. 



(June-Sept.) Ont., Que.. Me., N. H., Vt., Mass., N. Y., westw. to Mich.. Wise, 

 la. and Mo., southw. to Va. and Fla. 



Connecticut.— Kent Falls, July 23-24, 1931 (C. P. A.); Riverton, July 23, 1931 

 (C. P.A.): Salisbury, July 16, 1926 (W. E. B.), Sept. 5. 1928 (G. C. C.) ; Sept. 12. 

 1928 (C. P. A.); Sharon, Sept. 5, 1928 (G. C. C.) ; Twin Lakes, Sept. 12. 1928 

 (G. C. C). 



Cryptolabis Osten Sacken 



1859. Cryptolabis Osten Sacken; Proc. Acad. Nat. Sci. Philadelphia, 

 1859 : 224. 



The members of this genus are chiefly Australian and Neotropical, 

 a single species, the genotype, being found in northeastern North Am- 

 erica. The adults are commonly swept from herbage on the banks of 

 streams and it is strongly suspected that the innnature stages are en- 

 tirely aquatic. 



Cryptolabis paradoxa O. S. (Fig. 50,1). 



1859. Ciniptolabis paradora Osten Sacken; Ibid., I<s5ti:225. 



Figs.— Osten Sacken. Ibid., pi. 4. figs. 14. IS, 15a (wing, hyp.): 1859. Ostcn 

 Sacken, Mon. Dipt. N. Amer., 4, pi. 2, fig. 11 (wing), pi. 3. fig. 13 (gen.); 1869. 

 Needham, 23rd Kept. N. Y. St. Ent. for 1907. pi. 30. fig. 1 (ven.) ; 1908. Williston, 

 Man. N. Amer. Dipt., Ed. 3. fig. 25, sub 6 (ven.) ; 1908. Alexander. Cfls. N. Y., 1, 

 pi. Z7, fig. 101 (ven.) ; 1919. Crampton. Insec. Inscit. Menst., 13, pi. 2. fig. 8 (tho- 

 rax) ; 1925. 



General coloration of thorax blackish, the dorsopleural membiane 

 pale yellow. Halteres yellow, the apex of stem darkened. Wings 

 grayish, the prearcular region abruptly whitened; faint dusky cloud- 

 ings along cord, Cu and in axillary region; Rs weakly convex; numer- 

 ous macrotrichia in cells beyond cord. Genitalia of both sexes small 

 and inconspicuous, more or less retracted within abdomen. $ L. 3-4 

 mm.; w. 4.5-6.5 mm. 9. JL. 4-4.5 mm.; w. 5.5-6.5 mm. 



(July, Aug.) Ont., Que.. N. S., Me., N. H.. Vt., Mass., N. Y., soutlnv. f. Va,. 

 Tenn.. N. C, S. C. and Fla. 



Connecticut.— Kent Falls. July 23-24. 1931 (C. P. A.) 



