AMERICAN COLEOPTERA. 49 



Scape of antennae black, femora red var. femoratus. 



Scape reddish, femora dark var. mancus. 



Scape red, femora red var. basalis. 



Scape, femora and anterior tibise red var. oregonensis. 



Thoracic umbone gradually convex. Antennae feebly annulated. 



Antennae and legs dark quinqtiemaculatiis Hald. 



Scape and femora red var. texana. 



Claws feebly cleft at tip. Surface more densely clothed with recumbent 

 pubescence, erect hairs very short and visible only at the side3 

 and tip. 

 Thoracic umbone gradually convex, lateral tubercle not very promi- 

 nent cauescens Lee. 



T. discoideus Lee. and canteriator (Drap.) 



These two species have black antenDae and legs, the former not 

 annulate. The anterior cordiform spot may be reduced to a mere 

 spot on each elytron. 



The first occurs in New Mexico, the second in the Atlantic 

 States. 



T. tctraopbthaliuns (Forst.) 



The antennae and legs are always black. The elytral spots (four on 

 each) constantly remain but vary in size. 

 Occurs from the Middle States to Kansas. 



T. collaris n. sp. — Body black, head, thorax and elytra red. Antennae 

 annulate, scape brownish. Thorax with the usual four spots, sometimes the 

 basal margin black, umbone suddenly elevated, surface opaque. Elytra sub- 

 opaque with the usual four black spots. Legs black, anterior and middle 

 femora brownish. Length .60 inch; 12.5 mm. 



The mandibles of the males have a feeble sinuation on the upper 

 edge at base. One specimen S lacks the lateral spot. 



Five specimens collected by Mr. Belt in New Mexico. 



T. femoratus Lee. 



Under this head I have added as varieties, the species already- 

 noted. The markings often exactly resemble tetraophthalnnis and 

 the antennae sometimes lose their annulation, in which case the 

 more distinct punctuation of the abdomen is the only means of 

 distinguishing the two. 



This species and its varieties are found over the entire region 

 west of the Mississippi Kiver to the Pacific coast, and varies in 

 color of limbs and in the number and size of elytral spots in every 

 conceivable manner. The form known as oregonensis has very small 

 elytral spots. 



T. qtiinqnemactilatus Hald. 

 The thoracic umbone is merely slightly more convex than the rest 



TRANS. AMER. ENT. SOC. VII. (7) JANUARY, 1878. 



