170 J. L. LECONTE, M. D. 



nearly to the occiput; on the umler surface tlie punctures at the sides are 

 arranged in an irregular double row. Antennae but little longer than the head, 

 only slightly thickened externally. Prothorax as long as the head, not nar- 

 rower in front;, dorsal series of 12 — 14 punctures, lateral series curved as in 

 Xantholinus. Elytra pale yellow, blackish towards the base, punctures dis- 

 tinct, not fine nor dense, arranged somewhat in series; sutural stria very fine. 

 Abdomen sparsely punctulate. Length 4.8 mm. 



Detroit, Michigan ; oue specimen, Hubbard and Schwarz ; also 

 found in Canada. Seems related to the European L. par-umpunc- 

 tafus Gyll., which is cited by Fauvel, Fauue Gallo-Rhenane, iii, 375, 

 as found in North America, but the dorsal series of the prothorax is 

 composed of a large number of punctures. 



11. It, cepll.a.Iicus. — Less slender, piceous black, shining. Head about 

 one-half longer than wide, narrower in front, hind angles and base stronglj' 

 rounded; above convex, smooth, with a few very large punctures each side; 

 frontal grooves long and deep; beneath with a few large punctures and also 

 with distinct marginal lines at the sides, and a finer medial one bifurcating in 

 front. Prothorax oblong with strongly rounded angles, thus becoming almost 

 oval, nearly one-half longer than wide; smooth with dorsal series of five large 

 punctures and a group of seven lateral punctures. Elytra piceous, darker at 

 base, with strong sutural stria, and three ill-defined series of punctures. 

 Abdomen sparsely finely punctured. Legs and antennae rufo-testaceous, the 

 latter scarcely subgeniculate, outer joints somewhat rounded, feebly trans- 

 verse. Length 4.8 mm. 



Columbia, South Carolina; Dr. Zimmermann; one specimen. 



I have placed this singular insect in the present genus because the 

 . middle coxae are separated and the front tarsi slender. The last joint 

 of the maxillary palpi is slender and acicular, though not shorter than 

 the third, as is the case in L. fluvipes. 



METAl'OIVCUS Kraatz. 



Maxillary palpi with the last joint very small, acicular; middle 

 coxae contiguous; front tarsi not dilated. 



In addition to these characters this genus is readily known by the 

 antennae being but little longer than the head, strongly geniculate, 

 gradually but strongly thickened externally, with the outer joints 

 about three times as wide as long. 



M. floritlaims.^Subcylindrical, brown, shining, slightly hairy. Head 

 twice as wide as long, convex, narrower in front, base truncate, hind angles 

 strongly rounded, upper surface distinctly but not densely punctured, with a 

 broad smooth frontal stripe, under surface sparsely coarsely punctured; an- 

 tennae paler, a little longer than the head, outer joints gradually much wider. 

 Prothorax as long as the head but not narrower, distinctly not densely punc- 

 tured, with a broad smooth dorsal stripe. Elytra sparsely punctured, sutural 

 stria obsolete. Abdomen finely not densely punctulate, tip and legs paler. 

 Length 2.4 mm. 



