CARABIIXE. 31 



GALERITA MARSHII sp. nov 

 Pl. III. %-. 5. 



A pair of elytra in place are to be referred here. The texture was 

 evidently not dense, the elytra with straight, scarcely convex sides, apically 

 truncate, hut a little rounded and obtusely angled. A very little only of 

 the base is lost, showing the species to lie a small one and the combined 

 elytra about half as long again as broad. The stri;v are delicate, very 

 slightly impressed, but sharp and straight, minutely and not closely punc- 

 tured; the interstitial spaces arc also more coarsely and densely but faintly 

 punctured, the general punctuation being more obvious than the striatiou. 



Length of elytra, 7 mm.: breadth, 4.5 mm. 



Green River, Wyoming; one specimen, No. 02 (Dr. A. 8. Packard). 



Named for my friend Prof. O. C. Marsh, of Yale University. 



PLOCHIONUS Dejean. 



The form here described is the only fossil species known in this genus, 

 which has but few species, occurring in most parts of the world, only four 

 of which inhabit the United States. 



PLOCHIONUS LESQUEREUXI sp. uov. 

 PI. III. fig. 2. 



A single specimen and its reverse seem to fall in this group, and to be 

 not distantly related to P. timidus Hald., though it is impossible to say that 

 it is not a Pinacodera. The antennae are about two-thirds as long as the 

 elytra, with rather uniform joints about twice as long as broad and nearly 

 cylindrical, the base being only a little smaller than the apex. The pro- 

 thorax is about half as broad again as long - , or half as broad again as the 

 head, apart from the rather prominent eyes ; with rounded sides, broadest a 

 little behind the middle, but not greatly enlarging behind the broad, squarely 

 truncate apex with nearly rectangular lateral angles ; the surface appears to 

 be smooth, with an impressed median longitudinal line. Elytra posteriorly 

 truncate, distinctly striate, as in the Lebiini, the interspaces flat, with no 

 sign of punctuation here or in the stria?, but with a feeble sign of trans- 

 verse wrinkling, as is seen, but more heavily, on the thorax of P. timidtis. 



