78 PROC. ENT. SOC. WASH., VOL. 20, NO. 4, APR., 1918 



Table of North American Species of Edo. 

 (After Fall.) 



1. Blue, moderately shining, first and second funicular joints sub- 



equal, the first not much stouter; length -5.5-8 mm. cuneiformis Horn 

 Black species 2 



2. Elytral intervals wider than the striae, except occasionally in 



hispoides 3 



Elytral intervals narrower than the striae; punctuation coarse; 

 size 4.5-5.5 mm perforatus Horn 



3. First and second funicular joints subequal, the first not or scarcely 



wider than the second; strial punctures of elytra smaller, inter- 

 vals perfectly flat and nearly three times as wide as punctures at 

 middle of disc; body beneath densely punctate; length 6 mm. 



morio Fall 



First funicular joint much stouter than the second; strial punc- 

 tures of elytra larger, the intervals flat or slightly convex and 

 from one to two times as wide as punctures at middle of disc; 

 body beneath rather sparsely finely punctate; size 3-4.5 mm. 



hispoides LeConte 



Subgenus Panopsis Daniel, 1903. 



Subgenus Panopsis Daniel, 1903, Munch., Kol. Zeit., pp. 237, 239; type 



favicornis Gyllenhal, hereby designated. 

 Subgenus Panopsis (Daniel) Heyden, Reitter and Weise, 1906, Cat. 



Coleop., Europ., p. 695; typeflavicornis Gyllenhal. 



Subgenus Eumagdalis Daniel, 1903. 



.Subgenus Eumagdalis, Daniel, 1903, Munch. Kol. Zeit., pp. 238, 249; type 

 grilati Bedel. 



A NEW HOST PLANT OF THE BOLL WEEVIL. 



BY E. A. MCGREGOR 

 Bureau of Entomology, Washington, D. C. 



The writer spent the month of November, 1917, in Sonora, 

 Mexico, for the purpose of securing data on the possible occur- 

 rence of the boll weevil and the pink boll worm in that region. 

 It is of great economic interest to report that Anthonomus 

 grandis, or what Doctor Pierce determines as the variety 

 thurberiae, was found heavily infesting a wild littoral species of 

 cotton, Gossypium davidsonii Kellogg. 



Several launch landings were made below Guaymas and, 

 finally, at a point about 20 miles southeast of this city a large 

 clump of this interesting wild cotton was discovered growing 



