258 KANSAS ACADEMY OF SCIENCE. 



lected. It is very numerous in spring and fall and almost disappears 

 in midsummer. Casey's variety unijuncta also occurs, but is so feebly 

 differentiated from repanda that it may be disregarded, especially as 

 specimens occur with the humeral and middle bands united on only 

 one side. 



C. duodecimguttata Dej. Taken by me at Hays and Wa Keeney, 

 but I have seen specimens taken at Manhattan and other points in 

 the state. Occurs in spring and fall. 



C. oregona Lee. I have collected this species at Colorado Springs 

 and Salida, Colo.; common late in the fall and early in the spring, but 

 specimens may be found throughout the summer. This species 

 figures in several Eastern collections as from Kansas ; in one case the 

 locality Salina is given. If it were not for this case, I would advance 

 the theory that the specimens date back to the time when Kansas ex- 

 tended to the top of the Rocky Mountains, and are really from 

 Colorado. 



C. hirticollis Say. Occurs in eastern Kansas and in some parts of 

 western Kansas, but is replaced over the greater part of the state by 

 the variety ponderosa Thom. The two forms, however, grade into 

 each other, so that it is often difficult to decide to which some indi- 

 viduals belong. The extremes differ widely in size, outline, and 

 color. At Syracuse, Kan., I took specimens very dark in color, large 

 in size, heavily marked, and with scarcely any pilosity. They had 

 the outlines of typical hirticollis instead of the broadened ponderosa 

 form. Both the species and the variety are common on wet sand-bars 

 from May 1 to July 1, and from August 25 to November 1, or even 

 later. 



C. limbata Say. I first found this fine species at Benkelman, 

 Neb., about three miles north of the Kansas line, on sand-hills. 

 This was on May 18, 1903. On May 20, I found them more numer- 

 ous at Wray, Colo., a few miles further west, and collected about 

 eighty specimens. They were around the top of a sand mound 

 which rose some 200 or 300 feet above the valley of the Republi- 

 can river. On the top of the mound was a blow-out in the form of 

 an elongated crater, composed of white sand. All around the top of 

 the mound and extending about a hundred feet down the slopes the 

 white sand was found, and sparse grass grew up through it. Wher- 

 ever this white sand extended I found the insects, both in the blow- 

 out and on the slopes. No other tiger-beetles were found here, but 

 C. formosa was found to the edge of the white sand. This was the 

 only sand-hill in the neighborhood on which limbata was found, and 

 I found it only on one small spot at Benkelman. It is a quick flyer, 

 but its flight is short, and it is not hard to capture. 



C. cinctipennis Lee. On August 23, 1902, I captured a single 



