230 Memoirs on the Coleoptera 



nent, the tempora very oblique and moderately arcuate, longer 

 than in the two preceding species; antennae slender, tricolored as 

 usual; prothorax notably elongate, widest and strongly rounded 

 at the middle, the sides thence oblique and straighter to the apex, 

 broadly sinuate basally, the angles obtusely rounded and more or 

 less feebly everted; surface less convex than usual, finely, very 

 closely punctate and subrugulose, moderately flavo-pubescent; 

 sides broadly declivo-explanate, the fine edge sharply upturned 

 as usual; fovese large, concave; elytra three-fourths to four-fifths 

 longer than wide, more than twice as wide as the prothorax, feebly 

 subinflated posteriorly, the humeri strongly rounded; striae mod- 

 erately fine, sharply grooved, finely, feebly punctate, the general 

 ground sculpture as in jamis and the other species before described; 

 male with the external oblique angles of the first three anterior 

 tarsal joints rather sharply rounded, the basal joint as long as the 

 next two. Length (cf 9) 17. 0-19.0 mm.; width 5.5-6.6 mm. 

 Pennsylvani9, and North Carolina (Asheville). [G. americana Dej., 



nee Linn.; horealis Cast., and longicoUis Chd.] bicolor Drury 



A — Similar in nearly all respcts to bicolor but not quite so elongate, 

 the head a little narrower; prothorax distinctly less elongate, 

 but just visibly longer than wide, the sides more evenly rounded 

 though similarly widest at the middle, the sinus rather more 

 abruptly formed; elytra two-thirds longer than wide. Length 

 {&) 17.0 mm.; width 5.8 mm. Iowa (the locality unrecorded). 



iowensis n. subsp. 

 B — Nearly as in bicolor but narrower, the head narrower, with still 

 somewhat more prominent eyes, the tempora — converging thence 

 to the neck — straighter; prothorax narrower and relatively still 

 more elongate, the basal angles rather less broadly rounded; 

 elytra narrower, twice as long as wide. Length (9) 17.5 mm.; 



width 6.0 mm. Indiana. . rhombiceps n. subsp. 



Body still more elongate than in bicolor and much larger in size, similar 

 in coloration, sculpture and vestiture; head and antennae nearly 

 similar, the first antennal joint longer, bright rufous, the remainder 

 pale brownish, two to four with feeble obscure cloud in part; pro- 

 thorax nearly similar, the sides before the middle feebly oblique 

 and evenly, very moderately arcuate; sinus before the obtuse basal 

 angles rather deep though gradually formed, the angles reflexed; 

 foveae very large and concave, traceable anteriorly very feebly 

 almost to the apex; close punctures moderate, subruguliform, the 

 pubescence abundant, pale and bristling; elytra nearly as in bicolor 

 but rather more elongate, three-fourths ( 9 ) to four-fifths (cf ) longer 

 than wide, rather more than twice as wide as the prothorax, similarly 

 with the punctures of the long subscutellar series very much less 

 evident than in lecontei and related forms. Length (cf 9 ) 19.0- 

 20.5 mm.; width 6.6-7.0 mm. Florida (Palm Beach). Two 



examples obliqua Csy. 



13 — Form notably narrow, only moderately convex, with color and 

 general sculpture very nearly as in all the preceding species, smaller 

 in size; head distinctly elongate, the eyes well developed and notably 



