460 



WEST VIRGINIA EXPERIMENT STATION. 



Scolytids Continued. 



Main entrance, 381. 

 Nuptial chamber?, 381. 

 Preli m inary burrows, 384. 

 Primary galleries 383. 

 Pupa cases, 384. 

 Secondary galleries, 383 

 Side entrances and exits, 



381. 



Natural enemies of, 386. 

 Parasitic diseases of, 387 

 Parasitic insect enemies, 



of, 386. 



Predaceous insect ene- 

 mies of, 386 



Preferance of, for coni- 

 ferous trees, 376. 

 Preventives and remedies 



389. 



Robbers of, 387. 

 Unfavorable climatic and 



other conditions for 387. 

 Science, extracts from article in, 



293 



Scolytus rugulosus, 295, 296. 

 Scrub Pine, 293 

 Serropalpus barbatus, 440. 

 Shaw, Mr. 347, 

 Siagonium americanum. 433 

 Sirex (Urocerus) cressoni, 425. 

 Sparhius abdominalis, 427. 

 brevicaudus, 427. 

 brachyurus, 427. 

 canadensis, 427 

 claripennis, 428. 

 pallidus, 428 

 simillimus. 428. 

 tomici, 428. 

 Spintherus sp 428 

 Spruce in West Virginia, 203 



Agricultural influences of, 



225. 

 Causes of first trouble of, 



235. 

 Cause of second trouble of, 



237, 

 Circular letter regarding, 



238 



Commercial influences in 

 their relation to the fu- 

 ture of the area of, 223. 

 Common and technical 



names of, 204. 

 Description of, 207 

 Distribution of. 208. 

 Disturbing influences of 211, 



230. 

 End of the trouble to, 239. 



Spruce in West Virginia 



History and progress of dv- 



ing, 232 



Investigations of, 204. 

 Original area of, greatly re- 

 duced, 21 V 



Present condition as to in- 

 sect enemies of. 242 

 Present conditions in area of 



26. 



Probable future of the area 

 as indicated by present 

 conditions of, 221. 

 Rapid decay of dead timber 

 in one section of the 

 area of, 239. 



Report of investigation to 

 determine the cause of 

 the unhealthy condi- 

 tion of, between 1880 

 and 1893, 230. 

 Spruce gall louse, 260. 



Norway, in Morgantown, 350. 

 and pine in Md. and D. C. dy- 

 ing. 336 



timber beetle. 256. 

 Staphylinid or rove beetle and 



their larvae. '264. 

 St. Lawrence Boom & Lumber Co., 



302. 

 Stored for the winter, imported 



clerids, 322 - 

 Strahmeyer, Mr H 309. 

 Strayer, Mr. J. S. 284. 286. 

 Strassburg. Returned to, 305, 307. 

 Swarms of bark beetle, 246. 266. 



Table mountain pine, 273 293. 

 Tachina sp. 449. 

 Tachinid parasites, 265. 

 Tachys nanus. 431. 

 Taylor, Andy 316. 

 Tenebrionid beetles 266. 

 Tenebrio castaenus. 440. 

 Termes flavipes 453. 

 Tetrastichus thanasimi, 430. 

 Tetropium cinnamopterum, 259, 



427. 438- 



Thalessanortoni. 266 426- 

 Thanasimus dubius 262, 334, 343, 

 344.437. 



trifasciatus/343. 429,437 

 Timber or ambrosia beetles, 56. 

 Tomicqbia tibialis. n. g., n. sp. 430. 

 Tomicus, genus of, 421. 



avulsus, 344, 422, 445. 



