NORTH AMKRICAN COLEOPTERA. 29 



IflACROFS Kirby. 

 Hyperodes Jekel. 



Head short, transverse. Eyes lateral, not encroaching upon the 

 front, transversely oval, coarsely granulate. Rostrum deflexed, va- 

 i"iable in length and thickness, narrower than the head and slightly 

 widened at tip, which is not emarginate ; uni- or pluricarinate. 

 Scrobes long, directed against the eyes, profound and visible from 

 above anteriorly, superficial and more or less expanded jwsteriorly ; 

 prolonged to the buccal opening by a narrow fissure. Antennae 

 moderate, subapical; scape long, incrassate at its extremity and 

 reaching the anterior margin of the eye; funiculus 7-jointed, 1st 

 and 2d joints equal, or else 2d joint about one-half longer than the 

 1st, latter always stouter; following joints submoniliform, 3-5 of 

 about equal width, fith slightly, 7th distinctly wider and more or 

 less subcontiguous to the club, latter oblong-elliptical, pubescent and 

 annulate. Thorax subcouvex, variable in form, never longer than 

 wide ; lol)es distinct ; prosternum emarginate, scutelluni small. Ely- 

 tra oblong-oval, wider than the thorax, emarginate at base, very 

 rarely subtruncate ; very slightly attenuate towards the apex; pos- 

 tericjr callus at most feeble, striate-punctate ; all, or alternate inter- 

 stices only, with rows of setigerous punctures. Side pieces of meta- 

 thorax narrow, dilated anteriorly ; intercoxal process moderately 

 wide, third and fourth abdominal segments short, scarcely exceeding 

 together one of the others. Legs variable, femora clavate, tibise 

 emarginate internally, with the internal a{)ical angle produced, and 

 at most moderately mucronate. Tarsi variable, anterior tarsi gen- 

 erally slightly shorter and stouter, with the 3d joint moderately 

 dilated in the males, hind tarsi slender (except solutns group). 



The genus as thus defined comprises a number of small species, 

 mostly undescribed, the largest of which scarcely 5 mm. .20 inch, in 

 length* It approaches Listronotus very closely through the sohdiis 

 group, while the next one shows an almost equally strong tendency 

 toward Phytonomus, but readily distinguished from the latter by the 

 short third and fourth abdominal segments and the eyes not encroach- 

 ing upon the front. The latter characters I consider of more im- 

 portance than the relative length of the abdominal segments in .sej)a- 

 rating the two genera. Fhytonomics puncfatus Fahr. (opimus Ljec.:, 



•■■ The measurement is taken from the anterior tlioracic niar>;in to tlie apex of 

 the elytra. 



