189 



Tachinid^ 



Cistogaster immaculata Macq. 



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

 master, Bryngium yuccifolium (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, Leucania 

 unipuncta Haw. Two undetermined species of tachinids were taken 

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



Trichopoda ruficauda V. d. W. 



A single specimen of this fly was taken along the railway track 

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



An allied species, T. pennipes 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- 

 sosteira venusta Stal (Coquillett, '97, p. 21). 



SciOMYZIDiE 



Tetanocera plumosa Loew. (PI. XLVIII, fig. 2.) 



Taken in a colony of Spartina (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 aquatic. 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.1; 

 Buaresta csqualis Loew. 



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

 flower, Lepachys 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 (Xanthium). 



Empididue 



Bmpis dausa Coq. 



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

 bugs, Phymata fasciata, on the flowers of Solidago (Sta. I) Aug. 12 

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

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

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



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

 of the habits of Bmpididcs, and Schwarz (Proc. Ent. Soc. Wash., Vol. 

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



