THE PINE INVESTIGATION. 435 



Order COLEOPTERA: Family NITIDULIDAE. 



81. Colastus unicolor Say. With Pityopfithorus conftnis and 

 Tomicus calligraphus under bark of dead pine near Petersburg 



May 4, '92. 



82. Epuraea avara Rand. Adult under dead bark of spruce 

 logs near Bayard, July 8, '91. 



83. Epuraea truncatella Mann. Adults with Polygraphus 

 ruftpennis in spruce bark near Davis, Mar. 26, '90, and Bayard 

 July 9, '91. 



84. Ips fasciatus Oliv, With Xylolerus lineatus in sapwood 

 of recently cut spruce logs near Bayard, May 8, '92. 



85. Ips conftuentus Say, Common in galleries of Tomicus 

 calligraphus in partly Jiving bark of pitch pine, Tibbs Run, near 

 Dellslow, Mar. 20, '97. 



86. Ips vittatus Say. Frequent in galleries of Tomicus caco- 

 qrapJius containing adults and young in partly living bark of 

 white pine tree, Crow, Apr. 25, '93, also with same bark-beetle 

 near Dellslow, Mar. 20, '97. 



87. Rhizophagus cylindricus Lee. Two adults under dead 

 pine bark infested with Curculionid larvae and Scolytids, 

 Tibbs Run, Apr. 3, '97, ("The largest and rarest species of the 

 genus, known only from Georgia, North Carolina and Virginia; 

 an enemy of Scolytids." Schwarz.) 



88. Rhizophagus dimidiatus Mann. With Polygraphus 

 rufipennis under spruce bark near Cheat Bridge, Sept. 1, '90, 

 and Bayard, Mar. 26, '91. 



Order COLEOPTERA: Family LATHRIDIDAE. 



99. Corticaria elongata Hum. Adults under bark on pine 

 slabs with Tomicus calligraphus, Elizabeth, July 27, '91. 



Order COLEOPTERA: Family TROGOSITIDAE, 



90. Nemosom,a cylindricum Lee. Adults in pine branches 

 with Tomicus cacographus^ near Kanawha Station, May 20, '92; 

 Tomicus caelatus, Sept. 5, '92, and with bark beetles, Charles- 

 ton, Apr. 28, '93. 344. 



91. Trogosita virescens Fab. Adults under bark on dead and 



