480 bulletin: museum of comparative zoology. 



BRUCHIDAE. 



Spermophagus PLUTO, sp. nov. 

 Plate 13, fig. 3^. 



Form stout. Head small. Antennae short, not serrate, the joints 

 of the middle portion, at least, squarish. Prothorax showing moder- 

 ately coarse and deep, closely placed punctures on the flanks, sculpture 

 of the remainder of the underside not defined. Legs of moderate 

 length for the family, the hind femora slightly thickened, hind tibia 

 carinate, straight, with two unequal but fairly long spurs at the apex. 

 Hind coxae not much dilated and scarcely narrowing the basal abdomi- 

 nal segment. Length, 4.75 mm.; to elytral tips, 4 mm. 



Described from one specimen showing the underside. 



Type.— 'No. 2,646 M. C. Z. Florissant, Col. (No. 8,843 S. H. 

 Scudder Coll.). 



The rounded tips of the elytra show through and at first sight give 

 the impression of being enlarged coxal plates. While the aspect of 

 this insect is decidedly bruchid, I have not been able to assign it to 

 Bruchus because of the distinct spurs on the posterior tibia and have 

 therefore given it the above generic position rather than erect a new 

 genus upon the basis of the difference in form of body and in develop- 

 ment of the legs. The short antennae will separate it at once from 

 S. vivificatus and the form of the hind legs will distinguish it from any 

 of the Florissant species of Bruchus with which it might otherwise be 

 confused. 



Bruchus primoticus, sp. nov. 



Plate 13, fig. 6; Plate 14, fig. 1-2. 



Form robust. Head rather large, closely and minutely punctulate. 

 Antennae moderately stout, distinctly but not very strongly serrate. 

 Prothorax minutely punctulate in similar fashion to the head but more 

 strongly and having in addition a moderately coarse and very close 

 punctuation of medium depth, more pronounced at sides and base. 

 Elytra distinctly but rather finely striate, the striae with rows of 

 moderately small, approximate, elongate punctures, interstitial spaces 

 minutely transversely rugose. Hind tibia curved and carinate or 

 grooved, the femur enlarged, with a rather small tooth and a row of 



