AMERICAN COLEOPTERA. S3 



latter from Lower California is known to me in which however the 

 apical spot does not attain the lateral margin. 



C. pulchellus, n. sp. 



This name is suggested for a form resembling quadrimacnlafun. 

 but diifers in having the abdomen entirely, antennae and legs (except 

 the tibiaj) pale red ; the tibiae are pale fuscous. The rufous color of 

 the body is much brighter than in any specimens of quad rimacula tun, 

 and the form rather more slender. Length .18 — .20 inch; 4.5 — 

 5 mm. 



Occurs at Camp Grant, Arizona, during February. 



0. halteatus is a large species with the blue patches on the elyti'aso 

 large that the elytra may be said to be blue with a narrow sutural mar- 

 gin and transverse narrow band at anterior third rufous. The elytra 

 are punctured as in quadrimacMlatns and by this character may be 

 known from C. insuhitm which is smaller and with a greater extent of 

 the surface of the elytra rufous. 



C. limbellus, Gemminger, Col. Heft. VI, 1870; limbatics \\ Lee. l^ew Species, 

 1865, p. 94. 



This species is easily known by having the thorax rufous and im- 

 maculate and the elytra entirely bluish except a very narrow entire 

 limb and a narrow sutural stripe. This species forms the link between 

 those species with no pale limb and those in which the blue forms 

 a broad vitta and by these latter to the four maculate species. 



Occurs in Colorado and Nebraska. 



C, laticoUis, n. sp. — Head entirely black, very finel}' and sparsely punctured 

 with sparse cinereous pubescence and erect black hairs. Thorax entirely ru- 

 fous, twice broader than long, disc smooth, sides finely and moderately densely 

 punctured. Elytra densely punctured, blue vitta narrowed at its anterior third. 

 Body beneath black. Abdomen rufous. Anterior and bases of middle femora 

 pale brownish, tibiae and hind femora nearly black. Length .22 inch ; 5.5 mm. 



The entire upper surface is similarly clothed with pubescence as has 

 been described on the head. 



Occurs at Cape San Lucas, Lower California. 



C. conjluens differs from the above in being smaller, the blue elytral 

 vitta almost interrupted and above all by the sides of the thorax in 

 front being nearly straight so that the widest part of the thorax is 

 behind the middle. The .species above described having the thorax re- 

 latively broader and regularly rounded on the sides. 



Occurs in Kansas. 



C. vittatus and marginellus differ in having the elytra of the latter 

 much less distinctly punctured while the black thoracic spot is large 



