428 WEST VIRGINIA EXPERIMENT STATION. 



23. Spathius claripennis Ashm. Collected and bred from 

 cocoons in galleries of Polygraphus rufipennis in black spruce. 

 Cheat Bridge and Davis, Mar. and Sept. 



24. Spathius pallidus Ashm. Bred from cocoons found in 

 larval mines of Tomicus cacographus under bark of scrub pine. 

 Kanawha Station, June 23. 



25. Spathius simillimus Ashm. Bred from cocoons found in 

 larval mines of Chrysobothris pusilla, in spruce, Davis, Mar. 

 26, '92. 



26. Spathius tomici Ashm. Bred from cocoons found in 

 larval mines of Dryocoetes autoQraphus in bark of Norway 

 spruce log. Morgantown, March 15th, '91. 



27. Ithyssalus pityophthori Ashm. With Pityophthorus 

 n. sp. in bark of dying twigs 01 yellow pine. Kanawha 

 Station, July 29, '91. 



28. Rhysipolis biformis Ashm. In mines of Cerambycid and 

 Buprestid larvae in spruce bark. Cheat Bridge, Sept 1, Bay- 

 ard, Mar. 31. 



Order HYMENOPTERA: Family CHALCIDIDAE. 

 29. Cecidostiba dendroctoni A8hm(=Triyonoderus sp., Spinth- 

 erus sp., Lochites sp. c., Lochites sp. d., in Bull. 32, W. 

 Va. Agr. Expt. Station.) A common parasite of Polygraphus 

 ruiipennis in black spruce, observed and bred in 1890, '91 and 

 '92. Also found in spruce bark infested with Dendroctonus 

 frontalis. Lochites sp. d (?) taken in larval mines and pupa 

 cases of D. frontalis in scrub pine Nov. 7, and Oct. 10, 92. 

 Common. Bred from pupa found in mines of Tomicus caco- 

 graphus, July 15th, '93. 



30. Cecidostiba polygraphi(=Ashm. Trigonoderus sp. 

 Spintheruss]). Bull. No. 31, W. Va. Agr. Exp. Station). A 

 common parasite of Polygraphus rufipennis. Cheat Bridge, 

 Sept. 1,'90. Bayard June, '91, near Edra, Williams River, May 

 6, '93. Frequently bred from larvae and pupae found in larval 

 mines of Polygrayhus rufipennis. 



31. Cepha'lonomia hyalinipennis Ashm. Reared fro m spruce 

 twigs infested with Pityophthorus n. sp. and Pityophthorus 

 n. sp, q. taken at Cranesville, May 10th,'97. 



