189 



TACHINIDiE 



Cistogastcr immaculata Macq. 



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

 master, Bryngiuui 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, Lcucania 

 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 flv 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, pi u mi pes Fabr., has been bred from a grasshopper, Dis- 

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



SCIOMYZID/E 



Tetanocera plunwsa Loew. (PI. XL VIII, 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, PL 14. 1901) 

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



Trypetid;e 

 Buarcsta ccqualis 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. 1, p. 168) records the rearing of this fly from the seed-pod 

 of the cocklebur (Xanthium). 



Empididje 



Binpis clausa 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 Asclcpias 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 Biupididar, and Schwarz (Proc. Ent. Soc. Wash., Vol. 

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



