OF WASHINGTON, VOLUME XIV, 1912. 41 



Georgia and South Carolina." A series of 40 specimens 

 varying but little among themselves. Associated with various 

 scolytids in Pinus palustris, rirginiuna, ponderosa. 



Hopk. U. S. Georgia: Clyo. North Carolina: Boardman, 

 Tryon. Texas: Call, Deweyville. 



U. S. N. M. Florida: Biscayne, Palatka, Tampa (Hub- 

 bard & Schwarz). Nebraska: Pine Ridge (Soltau.) 



The distribution as given by Dr. Horn includes also la- 

 queatus and subcostulatus. 



Lasconotus laqueatus LeConte. (Proc. Acad. Nat. Sci. Phila., 

 1866, p. 378.) 



This species is intermediate between pusillus and coiicurns, 

 resembling the former in its somewhat elongate form and the 

 hook-shaped elevations on anterior margin of prothorax, and 

 the latter in the broad thoracic impressions and elytral struc- 

 ture, except interspace 5 is not so strongly elevated, the strial 

 punctures are more readily traceable, and the prothoracic im- 

 pression narrower. 



There has been considerable confusion m regard to this 

 species, subcostulatus, and pusillus. Dr. LeConte (1865) 

 based his description on material from Dr. Elliott Coues, 

 Arizona. The specimen now bearing the name label in the 

 LeConte collection agrees precisely with the original descrip- 

 tion, but in the same series are five other specimens labeled 

 "Or." These specimens are all typically subcostulatus and 

 totally different from the true laqueatus. In the Horn collec- 

 tion I find that Dr. Horn has placed representatives of all 

 these species under pusillus. Among them are 2 specimens 

 of laqueatus, 1 from Pinal Mountains, Arizona, and the other 

 from Montana; 7 specimens of subcostulatus, 2 of which are 

 from Montana, 4 from Nevada, and 1 from Washington; and 

 2 specimens of pusillus, one uf which, bearing the name 

 label, is from Georgia, the other from Florida. Dr. Horn's 

 (1878) description of the unnamed specimens from Vancouver 

 applies precisely to subcostulatus, as do also all the characters 

 assigned by Col. Casey (1890) to laqueatus. The range of 

 subcostulatus is northward and of /aquentus southward from 

 southern Montana and southwestern South Dakota. I have 

 specimens of both species from Colorado (Boulder), South 

 Dakota (Black Hills), and Nebraska (Pine Ridge), and in the 

 Horn collection from Montana. 



A series of 15 specimens showing some variation, more es- 

 pecially in width. Found associated with scolytids under 

 bark of Pinus ponderosa. 



