189 



Tachinid.i: 



Cistogastcr immacnlata Macq. 



A single specimen of this fly was taken on the flower of rattlesnake- 

 master, Eryngium yiiccifoliiiin (Sta. II) Aug. 13 (No. 55). 



The larva is parasitic on lepidopterous larvae (Townsend, Psyche, 

 Vol. 6, p. 466. 193) ; and has been bred from the army-worm, Lcucania 

 unipiincta Haw. Two undetermined species of tachinids were taken 

 by T. L. Hankinson (Sta. I) July 3, 191 1 (No. 7665). 



Trichopoda riificauda V. d. W. 



A single specimen of this flv was taken along the railwav track 

 (Sta. I) Aug. 12 (No. 38). 



An allied species, T. pcnnipcs Fabr., has been bred from the 

 squash-bug (Cook, Rep. Mich. State Board Agr., pp. 151-152. 1889), 

 and another, plumipes Fabr.. has been bred from a grasshopper, Dis- 

 sostcira vciiusta Stal (Coquillett, '97, p. 21). 



Sciomyzid;e 



Tctanoccra pluiuosa Loew. (PI. XL\^III, fig. 2.) 



Taken in a colony of Spartiua (Sta. I, a) Aug. 28 (No. 179). 

 This species is figured by Washburn (Tenth Ann. Rep. State Ent. 

 Minn., p. 121. 1905). The larvae of this family are aciuatic. Need- 

 ham (Bull. 47, N. Y. State Mus., pp. 580-581, 592, PI. 14. 1901) 

 describes and figures T. pictipes Loew. (Cf. Shelford, '13a.) 



Trypetid.'T: 

 Buarcsta (uqualis Loew. 



This insect was taken in sweepings among a colony of the cone- 

 flower, Lcpachys pinnata (Sta. I, e), Aug. 12 (No. 40). Marlatt (Ent. 

 News, Vol. I, p. 168) records the rearing of this fly from the seed-pod 

 of the cocklebur (Xantliiuin). 



Empidid.^ 



Bin pis clausa Coq. 



A specimen of this fly was taken from a pair of copulating ambush 

 bugs, PJiymata fasciata, on the flowers of SoUdago (Sta. I) Aug. 12 

 (No. 43), and great numbers, so many that they darkened the flowers 

 on which they rested, were seen upon Asclepias syriaca (Sta. I) Aug. 

 12 (No. 27). The specimen was determined by J. R. Malloch. 



McAtee (Ent. News, Vol. 20, pp. 359-361. 1909) gives an account 

 of the habits of Bmpididcu, and Schwarz (Proc. Ent. Soc. \\\'ish.. \'ol. 

 20, pp. 146-147. 1893) states that one kind captures small flies, and 



