Horn.] 1-ji j- Feb 2 i ; 



In the males of clearly punctured surface, the third interval of the 

 elytra has coarse punctures interspersed among the usual punctures ; in 

 the female this is rarely seen. 



Occurs in the Middle and New England States. 



B. rugulosus, n. sp. 



Form resembling peregrinus, color pale piceo-testaceous. Head black 

 with brilliant aeneous surface, densely and coarsely punctured. Thorax 

 coarsely punctured, with median piceous space with aeneous lustre : not 

 twice as wide as long, sides nearly straight slightly convergent. Elytra 

 deeply striate, striae very coarsely serrately punctured, intervals moderately 

 convex, punctato-rugulose ; color pale piceo-testaceous maculate with 

 pic30us spots similar to panther i mis but less distinct. Body beneath 

 rufo-testaceous, legs paler. Length .20 inch ; 5 mm. 



Easily known from striatus by its more robust form, and more roughly 

 sculptured thorax. 



Peninsula of Lower California, W. M. Gabb. 



The sub-genus Volvulus contains in one fauna but one species. 



B. altus, Lee. Proc. Acad. 1855, p. 366. 



Oblong oval, narrower behind, sides strongly compressed, transversely 

 very convex, higher than wide ; color piceous black with slight bronze 

 lustre. Head coarsely punctured, sparsely on the vertex, more densely 

 on the clypeus. Thorax nearly crescentic in form, the sides and base 

 forming a continuous curve, anterior angles obtusely rounded, apex 

 emarginate, surface sparsely punctured. Elytra striate, striae of the disc 

 faint and finely punctured, those of the sides deep and coarsely punc- 

 tured, intervals biseriately piihctulate on the disc, uniseriately at the 

 sides. Body beneath black, legs rufous, femora very narrowly pubescent 

 at base. Length .08 inch ; 2 mm. 



The fifth segment of the abdomen is deeply emarginate as in all the 

 preceding species of Berosus, but whether there is any tooth at the bottom 

 of the emargination, I am at present unable to determine. The sexual 

 characters have also not been seen. Volvulus appears to me worthy of 

 being considered a distinct genus from the form of the front, and the short 

 and robust hind femora. 



Occurs in Louisiana. 



Ch/Etakthria. Steph. 



Cyllidium, Erichs. 



In this genus the first joint of the antennae is long. The first two or 

 three segments of the abdomen concealed by plates which meet on the 

 median line. The presternum in front of the coxae is always short and 

 the under side of the head in repose rests upon the anterior coxae. The 

 species are partially contractile in the manner of certain of the forms of 

 Agathidium. 



Three species exist in our fauna. 



