312 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Holmgrenia Fcerster. 

 tarsalis Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 293. 



Rhimphalea Fcerster. 

 erythrogastra Viereck. Conn. Geol. Nat. Hist. Surv., Bull. 22, 



296. 



Polyblastus Hartig. 

 pedalis Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 297. 



Erromenus Holmgren, 

 dimidiatus Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 



298. 



Euceros Gravenhorst. 

 fiavescens Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 



299. 

 thoracicus Cresson. Ibid., Bull. 22, 299. 



Sympherta Foerster. 

 burra Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 299. 



Rhorus Fcerster. 

 bicolor Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 300. 



Anecphysis Fcerster. 

 ruficrus Walsh. Conn. Geol. Nat. Hist. Surv., Bull. 22, 301. 



Exenterus Hartig. 

 consors Cresson. Conn. Geol. Nat. Hist. Surv., Bull. 22, 301. 



Syrphoctonus Fcerster. 

 agilis Cresson. Bassus. Conn. Geol. Nat. Hist. Surv., Bull. 

 22, 302. 



Diplazon (Nees) Gravenhorst. 



Bassus Authors. 

 antennatus Davis. (Zootrephes). Conn. Geol. Nat. Hist. 



Surv., Bull. 22, 304. 

 bicapillaris Walsh. (Homotropus). Ibid., Bull. 22, 304. 

 concinnus Cresson. Ibid., Bull. 22, 303. 

 frontalis Cresson. Ibid., Bull. 22, 302. 

 laetatorius Fabricius. Ibid., Bull. 22, 303. 

 sycophanta Walsh. Ibid., Bull. 22, 303. 



Brephoctonus (Fcerster) Ashmead. 

 hygrotrecha Viereck. Conn. Geol. Nat. Hist. Surv., Bull. 22, 



305- 



