34 TEETIAEY RHYNCHOPHOEOUS COLEOPTEEA. 



Length, 10"™; rostrum lieyond eyes, 2"""; elytra, 7"""; height of body, 

 3-75'"'". 



Florisisaut, Colorado. Oue specimen, No. 8787. 



TRIGONOSCUTA Motschulsky. 



A genus known by a single species only, from California. The fossil 

 species which I place here can hardly have found its proper home, though it 

 would seem to be not far removed from it. Tlie stoutness of the rostrum 

 and want of oblicpiity of the antenna! scrobes, with its more compact form 

 and the greater trausverseness of the thorax, would seem to separate it, 

 while the form of the femora, the relation of the coxje, the breadth and 

 convexity of the intercoxal process of the hind legs, the form and size of the 

 second abdominal segment, and the course of the suture separating this from 

 the first segment are points of particular resemblance. 



Trigonoscuta inventa. 

 PI. II, Fig. 3. 



Body stout, compact, a little more than half as long again as broad. 

 Head small, finely punctate; eyes large, transversely broad-oval; antennal 

 scrobes scarcely oblique; rostrum shorter than the head, rather stout as 

 seen laterally, sparsely and not very finely })unctate. Prothorax apparently 

 fully twice as broad as long, densely and rather finely punctate; in front, 

 finely and transversely striate. Elytra coarsely puuctato-striate, the inter- 

 spaces with a single row of finer circular puncta, separated from each 

 other in the same row h}' lialf their diameter Anterior coxpe attingent,; 

 middle pair separated by a verj- narrow space, less than one-fourth the 

 diameter of the coxal cavity; hind pair vexy widely distant, nearly twice 

 the diameter of the coxal cavity. Femora large, long, clavate, punctate. 

 Tibiae moderately slender, not fiexed. First and second abdominal seg- 

 ments long, separated by a sinuous suture; whole under surface densely, 

 uniformly, and rather coarsely punctate. 



The specimen shows at the same time dorsal and ventral aspects, but 



