AMERICAN COLEOPTERA. 259 



3. — Thorax (as limited by the angles), longer than wide Tulvipes. 



Thorax nearly square, or even slightly wider than long 4. 



4. — Thorax quadrifoveolate quaclrifoTeolata. 



Thorax at most feebly impressed posteriorly 5. 



5. — Thorax distinctly wider posteriorly, hind angles prominent. ..aniericana. 



Thorax parallel, hind angles not prominent parallela. 



6. — Thorax moderately densely punctured, opaque. 



First segment of abdomen distinctly punctured inucida. 



First segment nearly smooth texana. 



Thorax moderately shining, sparsely punctate, narrow posteriorly. Elytra 

 with rows of fine, simple punctures longicollis. 



In the Bull. Mosc. 1868, iii, p. 199—200, Motschulsky in a few 

 words indicates the following species as occurring in our fauna, 

 fulvipennu^ snbnigra, parallelocoUis and corpulenta, the last two from 

 New Orleans. The few notes are not at all adequate for their re- 

 cognition and they cannot be considered as described species, I think 

 under the circumstances it is better to drop them entirely. 



M. producta Lee. Proc. Acad. 1855, p. 305. — Elongate, black, opaque, 

 sparsely clothed with short white hair, antennae and legs rufous. Head 

 coarsely and densely punctured. Thorax longer than wide, gradually wider 

 posteriorly, anterior angles obtuse not prominent, hind angles slightly promi- 

 nent, disc moderately convex with a vague impression on each side of middle 

 of base, surface coarsely and densely punctured, margin finely crenate. Elytra 

 substriate, striae with coarse punctures, submuricate at base becoming finer to- 

 ■vvard the apex. Body beneath black, opaque, coarsely and moderately densely 

 punctured. Length .12 inch; 3 mm. 



In the male the metasternum is broadly concave, the first ventral 

 less broadly but rather more deeply concave, the terminal ventral 

 not impressed. 



This species is the most elongate in our fauna and is easily known 

 by the structure of the antennae. It should be compared with the 

 European anf/iisticoIlis. 



Occurs in the Middle States region. 



M. picipes Hbst. Kafer v, 24, pi. 46, fig. 2; foveata Lee. Proc. Acad. 1855, 

 p. 305. — Moderately elongate, black or brownish, opaque; antennae and legs 

 rufous. Head densely and coarsely punctured, on each side rather deeply 

 obliquely impressed. Thorax slightly longer than wide, sides finely crenate 

 and very slightly diverging posteriorly, anterior angles obtusely prominent, 

 hind angles small scarcely prominent, disc moderately convex, coarsely and 

 densely punctured and slightly foveate at base on each side of middle. Elytra 

 with striae of moderate punctures, not closely placed and slightly submuricate 

 at base. Body beneath moderately coarsely and densely punctured, first ven- 

 tral more coarsely than the following. Length .08 inch; 2 mm. 



In the male the first ventral is slightly concave the last ventral 

 not impressed. 



