94 



THE SCOLYTTD BEETLES. 



a few dorsal granules, and 9 with medium-sized caudal spines. Pupal 

 t\T)e labeled '^lopk. U. S. No. 2968." 



Larva. — In addition to the divisional characters, the front has a 

 distinct, median, smooth, shining convexity produced toward vertex; 

 clypeus short, broad, with apex deeply emarginate; pro thoracic seg- 

 ments very large and sternellar lobes with distinct foot calli. Apex 

 of abdomen truncate. Larval type labeled '' Hopk. W. Va. No. 5976." 



The frontal convexity is more rugose in some specimens than in 

 others. 



Galleries (figs. 51-56). — Egg galleries sublongitudinal, winding; the 

 eggs isolated; larval mines exposed; pupal cells in outer bark. 



Distribution (fig. 57). — (Hopk. W. Va.) West Virginia: Hamp- 

 shire, Monongalia, Hardy, Pendleton, Randolph, Pocahontas, Tucker^ 

 Kanawha, Raleigh, Greenbrier, and Wood counties. Virginia: Port 



Fig. 57. — Dendroctonus frontalis: Distribution map. (Original.) 



Republic. Work observed in southern Pennsylvania, Maryland, and 

 Virginia (author). (Hopk. U. S.) JLk&ama; Calhoun, Montgomery. 

 Arkansas: Hampton. Georgia: Clyo, Thomasville, Demorest. Louisi- 

 ana: Singer, Wilson. Maryland: Near Cumberland. North Carolina: 

 Tryon, Pisgah Ridge, Fletchers, Boardman, Pink Beds, Biltmore. 

 South Carolina: Chicora (Pregnalls). Tennessee: Ducktown. Texas: 

 Call, Deweyville, Kirbyville, Beaumont. Virginia: Green Bay, Glen 

 Allen, Auburn Mills, Virginia Beach. Districtof Columbia: Washington. 

 Additional localities rejjresented in other collections: (Le Conte) Lake 

 Superior, Michigan. (There may have been some mistake in regard to 

 the labeling of this specimen, since it is not likely the species will ever 

 be f oimd that far north.) (H. & S.) Haw Creek, Florida ; Cobbs Island, 

 Virginia; (A. M. N. H.) Black Mountains and Mount Gray beard. 

 North Carolina; (Barber) "western Indian territory" [Oklahoma]. 



