NORTH AMERICAN COLEOPTERA. 219 



Occurs fVoin North Carolina (Ziimnormanii j and Georgia (Mor- 

 rison) through Florida to Key West (Schwarz). 



M. pallidum Say, Joiiru. Acad, iii, p. 446: ed. Lee. ii, p. 214. — Oblong oval, 

 slightly depressed, yellowish testaceous, thorax and head sometimes rufesceiit. 

 Head distinctly punctate, usually more finely in northern specimens and more 

 coarsely in southern ; median frontal impression usually distinct, clypeo-frontal 

 suture more or less excavated. Thorax twice as wide as long, slightly narrowed 

 in front, sides strongly arcuate, angles prominent, disc distinctly punctate, mod- 

 erately closely, the southern specimens more coarsely. Elytra striato-jmnctate, 

 the punctures not coarse, obliterated at apex, the two short striaj somewhat ir- 

 regular. Body beneath smooth, shining; abdomen usually darker, sometimes 

 piceous, sparsely punctate'. Length .12 — .16 inch. ; 3 — 4 mm. 



The specimens from the northern limit of distribution are smaller 

 and less punctate. 



Occurs from Massachusetts (Blanchard) to Missouri (Say) and 

 southward to Florida. 



.^I. laterale Crotch, Proc. Acad. 187-3, p. 44. — Oval, subdepressed, yellowish 

 testaceous, each elytron with a large, irregularly shaped piceous spot extending 

 inward from the side margin, but not reaching the suture. Head sparsely in- 

 distinctly punctate, clypeus coarsely, frontal suture distinctly excavated. Thorax 

 not quite twice as broad as long, slightly narrowed in front, angles prominent, 

 sides strongly arcuate, disc rather coarsely punctured at middle, but compara- 

 tively smooth around the borders. Elytra rather coarsely striato-punctate, the 

 strife all regular, punctures finer toward apex. Body beneath smooth, metaster- 

 uum darker in color; abdomen sparsely punctate. Length .10 — .12 inch.; 2.n — 

 3 mm. 



This species has much the form of Incida, hut is rather iiii>re con- 

 vex. It differs from that species in having a suioother head, rhdvax 

 pale, elytra with the large lateral piceous blotch. 



Occurs in North Carolina and Kansas (Crotch). 



^I. floridaiiiiin Crotch, Proc. Acad. 187.3, p. 43. — Oblong, moderately con- 

 vex, rufo-testaceous. surface dull and finely alutaceous. Head sparsely indis- 

 tinctly punctate, clypeus more evidently, frontal suture well excavated, median 

 impression of front short, but well marked. Thorax one-third wider than long, 

 slightly narrower in front, angles very feebly prominent, sides not strongly 

 arcuate, disc convex, extremely finely sparsely punctate. Elytra rather finely 

 strialo-punctate, striai all regular, punctures a little finer toward the apex. 

 Body beneath rather dull; abdomen sparsely finely punctate. Length .18 — .20 

 inch ; 4.5 — 5 mm. 



This species has no striking peculiarities, except the rather dull 

 greasy aspect of the surface. 



Occurs at Capron and Biscayne Bay, Florida (."^chwarz). 



M. puiiclicolle Lee, Proc. Acad. 1858, p. 85. — Oval, slightly oblong, sub- 

 depressed, brownish testaceous, legs pale, surface shining. Anteunse pale rufo- 



TRANS. AM. ENT. SOC. XIX. JDLY. 1892. 



