62 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Hypothenemus species. 



In huisache ( Vachellia farnesiana) pods, April 22, 1907 (Mit- 

 chell); on Cratagus, April 22, 1907 (Cushman). 



Stephanoderes, new species, Hopkins. 

 In corn (Zea mays} stalks, March 6, 1909 (Mitchell). 



NOTES ON PTEROSTICHUS JOHNSONI ULKE. 

 BY C. V. PIPER. 



Pterostichus johnsoni was first collected in July, 1878, by 

 Prof. O. B. Johnson, on Mill Creek, near Mehama, Oregon. 

 He found but three specimens, crawling over wet moss on 

 boulders in a cool, shady canyon. Though he searched for it 

 many times again in likely places, he never found the insect 

 again until August, 1888, when he collected seven specimens 

 on Rock Creek, which flows into the Santiam 12 miles above 

 Mill Creek. With this additional material Ulke described the 

 species in the March, 1889, number of Entomologica Americana. 



The beetle had never been collected at any other place ex- 

 cepting Horsetail Falls, Oregon, where I collected a single 

 specimen in August, 1904. This individual was crawling over 

 the wet moss in the spray of the fall. I recognized it at once, 

 and knowing its rarity spent more than an hour in searching 

 for others, but without success. Two years later I visited 

 these falls again and searched assiduously for the beetle, but 

 found none. 



Last summer, while visiting Professor Johnson, he told me 

 that he was exceedingly anxious to obtain additional speci- 

 mens, as he had given all his away. He explained to me 

 minutely the places where he had found the insects on Mill 

 Creek, one of which was at the falls about 3 miles up the 

 creek, and the other on mossy rocks in the canyon of the creek, 

 a half mile below the falls, where one could no longer follow 

 its bed but had to clamber around. As I had to spend several 

 days in the Willamette Valley, I promised Professor Johnson 

 to visit the spot if I possibly could and try to find his name- 

 sake again. Mehama is easily reached, being only 1 mile dis- 

 tant from the railroad station of L,yons. I reached Mehama 

 on a hot August day with no other equipment than the suit 

 I was traveling in and a pair of leggings bought for the occa- 

 sion. There was no trail up the creek, so that one had the 

 choice of wading up the creek or crawling through brush so 

 thick that the creek was usually the preferable path. Before 



