412 [Juni 



3. Tachyusa nigrella, Lee. 



Tachyusa nigrella, Lee. Desc. N. A. Col. p. 29. 95. 



Elongate, shining black, with a thin cinereous pubescence, very finely 

 punctured ; thorax obsoletely channelled, with a slight transverse fovea 

 before the base,- a little shorter than broad; abdomen somewhat nar- 

 rowed anteriorly, segments 1 — 3 transversely and deeply impressed ; 

 legs nigro-piceous. Length .12 inch. 



Hab. — Middle and Western States; common. — LeContc. 



i. Tachyusa baltifera, Lee. 



Tachyusa baltifera, Lee. Desc. N. A. Col. p. 29. 96. 



Less elongate, nigro-piceous, shining, finely punctured, thinly pube- 

 scent; thorax, elytra and abdominal segments 1 — 3 piceo-testaceous ; 

 thorax channelled posteriorly, transversely impressed before the base, 

 a little shorter than broad; abdomen slightly narrowed towards the 

 base, segments 1 — 3 deeply and transversely impressed ; antennae and 

 legs fusco-testaceous. Length .10 inch. 



Hab. — Coney Island, near New York. Less elongate than the other 

 species, with the fine punctures, especially of the thorax, less dense and 

 more distinct than in the two preceding species. — LeConte. 



5. Tachyusa gracillima, Lee. 



Tachyusa gracillima, Lee. Desc. N. A. Col. p. 29. 97. 



Very elongate, nigro-piceous, shining, finely pubescent; head piceous, 

 very finely punctured; thorax scarcely shorter than broad, transversely 

 impressed before the base and densely punctured, piceo-testaceous ; 

 distinctly punctured; abdominal segments 1 — 3 piceo-testaceous, pro- 

 foundly constricted, the last segment blackish, sparsely and finely punc- 

 tured ; antennae and legs piceo-testaceous. Length \ inch. 



Middle and Western States; common. Resembles in form T.cavi- 

 collis, but is readily distinguished by the difference in color and sculp- 

 ture. — LeContc. 



b. Antennae thick; ligula long, bifid at the tip; labial palpi with the 

 second joint shorter. 



Genus 8.— BOLITOCHARA, Mann. 

 Bolitochara notata, Maklin. 



Bolitochara notata, Makl. Mann. Bull. Soc. Mosc. 1S52, i, p. 305. 



Rufo-testaceous, somewhat shining, densely punctured; apex of an- 

 tennae, head, an obsolete spot on middle of thorax and the elytra to- 

 wards the apex, pale fuscous ; abdomen deeply and sparsely punctured, 

 the first three segments with a central, longitudinal, long, irregular, 

 black spot ; fourth segment entirely, and the base of the fifth, black. 

 Length I2 line; breadth more than \ line. 



Hab. — Sitka. — Mannerheim. 



