A EHINOMACEEID^. [LeConte. 



esting to see that it clings to a very ancient and syntlietic type of vege- 

 tation 

 Our species all belong to one genus. 



BHINOMACER Fabr. 



Pubescence long and coarse : 



Prothorax not longer than wide 1. pilosus. 



Prothorax longer than wide 3. elongatus. 



Pubescence short and fine 3. comptus. 



The (^ differs from the 9 by the front tibiiE being longer and slightly 

 curved inwards, and the beak longer, more slender, and less dilated, at the 

 tip. The tufts of hair at the middle of the third and fourth ventral seg- 

 ments of the 9 are also present in our species. 



The anal segment characteristic of the (^ of the second series of Rhyn- 

 chophora also exists in Rhiuomacer, but is not prominent, and is almost 

 concealed by the last dorsal segment, which is rounded at tip. 



1. R. pilosus, n. sp. 



Brown or blackish ; antennae and legs paler ; pubescence long and coarse. 

 Beak punctured and substriate, head densely punctured. Prot^iorax as 

 wide as long, densely and strongly punctured, sides rounded. Elytra con- 

 vex, parallel, elongate, coarsely punctured. Length 3.6 mm's ; .15 inch. 



Lake Superior, Virginia, California ; four specimens. 



3. R. elongatus, n. sp. 



Blackish with a slight brassy tinge ; antennae and legs brown ; pubescence 

 pale brown, long and coarse. Beak with the outer half pale ; sculptured 

 as in the preceding. Prothorax a little longer than wide, very densely 

 punctured, sides very slightly rounded. Elytra rather narrower than in 

 the preceding. Length 3.6 mm's, .15 inch. 



Pennsylvania four specimens. Two are dark coloi-ed ; one dark with 

 pale elytra, and one entirely pale brown. 



One 9 from Canada, with pale brown elytra has the form and sculpture 

 of the other four, except that the prothorax is scarcely at all rounded on 

 the sides, and is less densely punctured, and the elytra still more elongated. 

 It may indicate another species, but I am unwilling to designate it as such 

 without more specimens. 



3. R. comptus, n. sp. 



Form and size of B,. pilosus ; blackish with a distinct brassy tint, clothed 

 with short whitish hair. Head and beak as in the other species. Pro- 

 thorax as wide as long, rounded on the sides, more finely and densely punc- 

 tured. Elytra more densely and rugosely punctured. Stem of antenmv 

 pale brown. Length 3.6 mm's ; 15 inch. 



One 9, Lake Tahoe, California; Mr. Crotch. Quite distinct by the 

 shorter pubescence and finer and denser punctuation. 



