38 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



This species is most closely allied to vegrandis, but differs 

 markedly from it, in its larger size, broader, flatter body, and 

 prothoracic structure. A series of 15 specimens showing 

 some variation. Some specimens have the prothorax more 

 narrowed posteriorly, but are otherwise typical. Associated 

 with scolytids in Douglas fir and pine. Named for Mr. E. 

 A. Schwarz, who collected the examples. 



Hopk. U. S. Idaho: Centerville. Washington: Rock 

 Creek. 



U. S. N. M. Vancouver Island (Victoria). Washington: 

 Tenino (Hubbard & Schwarz.) 



Lasconotus vegrandis Horn. 1885, pp. 140-141. 



This species is readily distinguished from schivarzi by its 

 more slender form, the more sharply produced posterior angles 

 of the prothorax and more delicate structure throughout. A 

 series of six specimens showing but little variation. Asso- 

 ciated with Phlceosinus sp. in Thuja. 



Hopk. U. S. California: Wawona. 



A single specimen in the Horn collection from California. 



Lasconotus referendarius Zimm. 1869, p. 254. 



An exceedingly minute, distinct species, easily known from 

 simplex, its nearest ally, by the deep median impression of the 

 pronotum and the more distinctly thickened apical margin of 

 the same. A series of some 70 specimens shows very little 

 variation except slightly in size and some have the anterior 

 elevations of pronotum more acute. Associated with various 

 scolytids under bark of Pinus strobus, palustris, virginiana. 



Hopk. U. S. Alabama: Montgomery. District of Colum- 

 bia: Rock Creek Park. North Carolina: Biltmore, Chad- 

 bourne, Hendersonville, Pink Beds, Pisgah Ridge, Tryon. 

 Texas: Deweyville, Kirbyville. Virginia: Richardsville. 



U. S. N. M. District of Columbia (Hubbard & Schwarz, 

 Linell). Florida: Tampa, Crescent City, Biscayne (Hub- 

 bard & Schwarz). Georgia: St. Catherine Island. Texas 

 (Belfrage). 



Lasconotus servus Horn. 1885, p. 141. 



This species is not closely allied to any other; it resembles 

 refer endarius in elytral characters and the following species 

 in pronotal structure, though in both cases this resemblance is 

 but slight. The wide, flat, even interspaces are a striking 

 character. I have seen but S specimens, which are verj^ con- 

 stant. They occur under bark of yellow pine, associated with 

 Pityophthorns sp. 



