AMERICAN COLEOPTERA. 231 



C. angustata, Spin., Mon. Cler. I., p. 149, pi. 7, fig. 1. 

 C. ovipennis, Lee, Proc. Acad., 1869, p. 76. 

 var. pilosella, Lee, New Species, p. 95. 



Note. — In the Catalogus, (Geraminger and Harold), p. 1726, a G. 

 cratxji, Bland appears, with a reference. No such species was ever 

 published. 



TRI€HODEII$, Hbst. 



Our species are so few in number and so easily distinguishable as 

 hardly to need comment. The occurrence of a singular species from 

 Arizona, gives the opportunity for a few remarks which may be put 

 in the form of a table. 



Elytra with tip truncate and sinuate in 5 illustris. 



Elytra rounded at tip in both sexes. 



Elytra bluish, variegated with yellow or reddish bauds, rather finely scabro- 

 punetate. Thorax very sparsely punctured. 



Elytra with three yellow bands, the basal enclosing a humeral blue spot, 

 extending backward along the suture; a median oblique band; a sub- 

 apical band, oblique from behind anteriorly to suture. Tibiae usually 

 pale ornatus. 



Elytra with three transverse bands of red or yellow, basal, median and 

 sub-apical. Legs entirely blue Nuttalli. 



Elytra with red spot on the side of each elytron near the middle, some- 

 times entirely wanting bisignatus. 



Elytra red or orange, with transverse bands of violet black, surface with very 

 coarse and deep punctures. Thorax densely punctured. 



Elytra with two transverse bands and tip black apivorus. 



Elytra with two broad transverse bands bibalteatus. 



The sexual characters are very much alike in all the species, and 

 may be seen on pi. I, fig. 28. 



T. illustris, n. sp. — Form elongate, parallel, body metallic blue, elytra 

 variegated, legs ferruginous. Head blue, densely punctured, sparsely pubes- 

 cent; antennae pale. Thorax oval, longer than wide, constricted at base, sur- 

 face densely punctured and sparsely pubescent, with smooth median 

 line posteriorly. Elytra parallel, conjointly rounded % , truncate and 

 sinuate at tip 9j disc with rows of very coarse punctures becoming 

 smaller at sides, and smaller and confused behind the middle; color 

 brownish ferruginous, with a basal yellow band prolonged along the 

 suture, but not dilated, a band at middle slightly oblique, another at 

 three-fourths, extending obliquely forward from the margin to the 

 suture, yellow bands bordered with black, which also extends along 

 the margin except at tip. Body beneath densely punctured, metasternum 

 densely clothed with whitish hairs on each side of middle, abdominal seg- 

 ments with whitish hairs on the posterior margin at the side. Length .54 

 inch; 13.5 mm. 



This species is entirely unlike any of our others, although allied by 



