4()0 BIOLOGICAL SURVEY OF 



CTENISCUS Flulidav 



C. obbitalis Cress. Echo Lake; S. W. Harbor, June 12-July 

 17. 



( !. ornatub (Walsh). Long Pond; S. W. Harbor; Bar Har- 

 bor, June 13-Sept. 7. 



8MICEOPLECTEUS Tlioinson 



S. albilineatus Walsh. June 15. In U.S.N.M. 

 S. annulipes Cress. Record of capture lost. 



Bathythrix Forster 



B. triangularis Cress. Bar Harbor, June 2 (Br.). 



Mastrus Forster 



M. subspinosus Prov. Bar Harbor, June 12. 



Otacustes Forster 



0. chassis crassus (Prow). S. W. Harbor, July 30. 



Isdromas Forster 



1. washingtonensis Cush. Bred from P. nemorata, May 28 

 (Br.). 



I. sp. Bar Harbor, Aug. 27 (Br.). 



Diaglyptidea Viereek 



1). lavoiei (Prov.). Long Pond, July 16. 



Gelis Thunberg 



G. obscurus (Cress.). Pars, on B. canadensiella, June 29 



(Br.) ; S. W. Harbor, July 13. 

 G. tenellus (Say). Bar Harbor; Salisbury Cove: S. W. 



Harbor, June 7-Sept. 3. 

 G. urbanus (Braes.). Pars, on Diprion polytomum, Anchyl- 



opera, P. nemorata. Station F290. 

 (J. sp. Pars on Exema conspersa, Aug. 25. 

 G. sj). Pars, on P. nemorata. 

 (J. sp. Pars, on Arbor vitae leaf : niiner, July 21 (Br.). 



