136 R. W. Dawson 



3. Pronotum with the sides distinctly set off fi'om the discal area 

 by rather strong, longitudinal depressions; color reddish 

 brown saucius 



Pronotum without longitudinal impressions defining a discal 

 area 4 



4. Posterior angles of pronotum continuous with the side margins; 

 upper surface of body dull black knochi 



Posterior angles of pronotum not continuous with the side mar- 

 gins, separated by a very deep and strong, oblique groove; 

 upper surface strongly shining nitens 



Cremastochilus retractus Le Conte. 



1874. Crernastochilus retractus Le Conte, Trans. Amer. Ent. Soc, 

 V, pp. 54-55. 



Specimens examined: 1, from Halsey in June. 



Cremastochilus nitens Le Conte. 



1853. Cremastochilus nitens Le Conte, Proc. Acad. Nat. Sci. Phila., 

 p. 232. 



Specimens examined : 36, from South Bend, West Point, 

 Brady Island and Halsey, collected from May 5 to June 20. 



Cremastochilus knochi Le Conte. 



1853. Cremastochilus knochii Le Conte, Proc. Acad. Nat. Sci. Phila., 

 p. 231. 

 • Specimens examined : 69, from Omaha, South Bend, 

 Lincoln, Fairmont, West Point, Cherry Co., Crawford, Mon- 

 roe Canyon in Sioux Co., and Mitchell collected from March to 

 September 12. 



Cremastochilus saucius Le Conte. 



1858. Cremastochilus saucius Le Conte, Journ. Acad. Nat. Sci. 

 Phila., iv, p. 16. 



Specimens examined: 1, from Haigler, May 23, 1914, 

 collected by L. M. Gates. Saucius is recorded from Kansas 

 and Colorado, and is probably not uncommon in the south- 

 western part of the state. 



242 



