Occasional Papers of the Museum of Zoology f 



taken at Devils Lake in July ; one adult was taken in a marshy 

 area at the Turtle Mountains, and the other four at Devils 

 Lake during August. 



"^Megalotomus quinquespinost(s (Say). — Two individuals 

 were brought from the Turtle Mountains, and one was taken 

 at the Sheyenne River. 



Coriscus^ curl lilts (Say). — The two specimens in the collec- 

 tion are from Devils Lake, where they were taken July 20, 

 running about on the sand among the sparse beach grasses. 

 Uhler (1878, p. 504) lists this species from Pembina and Tur- 

 tle Mountains. 



*Coriscus conspersus ( Montandon).^ — Numerous specimens 

 were taken at Devils Lake (July), as well as at Stump Lake, 

 Spring Lake, the Sheyenne River, and the Turtle Mountains. 

 Montandon (1893, p. 16) lists this species from "Dakota." 



"^Coriscus tomentosiis (Fracker). — One specimen, taken in 

 flight at Amidon, August 23. has been placed here. Its col- 

 oration is very nearly identical with that of C. plitto (Uhler), 

 as described by Fracker (1918, p. 266-68), but the antennal 

 and genital characters are those of tomentosus. On the other 

 hand, I have a specimen of pJiito from Dilley, Oregon, given 

 to me by Mr. Barber, which agrees exactly in color with 

 Fracker's description of tomentosus. Such color variations, 

 however, are analogous to those found in C. conspersus and 

 its variety infusccttus (Fracker). C. tomentosus has previ- 

 ously been recorded only from Colorado. 



■^Coriomerus humilis (Uhler). — One individual was taken 

 on the arid Chalky Buttes near Amidon, August 24 ; and Mr. 

 Bueno has a specimen taken at Fargo, May 26, 1900, which 

 he has kindly permitted me to record here. 



^ Horvath has shown ( 1917, p. 378) that C'nncx calcaratus Linne 

 is the type species of both Alydus Fabr., 1803, and Coriscus Schrank, 

 1796. Alydus is therefore a strict synonym of Coriscus. 



