3o4 G. R. CROTCH, M. A. 



I. liigrans, sp. n. — Ovate, shining, convex, pitchy-brown, legs and anten- 

 na} pale; head and thorax uniformly not very strongly punctate, the latter 

 slightly sinuate on either side of the base, the sinuation faintly margined ; 

 elvtra punctate striate, interstices sparsely and very finely punctulate; ventral 

 segments coarsely punctate. L. - 18 inch. 

 Florich. (Ulke.) 



I. extricatus. sp. n. — Rather broadly ovate, shining, clear yellowish-red, 

 elvtra dark brown; bead and thorax rather closely and evidently punctate, 

 the base of the latter slightly sinuate and margined on either side; scutellum 

 red; elytra punctate striate, the punctures numerous, interstices finely and 

 sparingly punctulate; ventral segments and metasternum rather coarsely 

 punctate. L. -16 inch. 



Middle States. (Leconte.) 



MYCOTRETUS, (Chev.) Lac. Erot., p. 132. 

 Eyes finely granulated, maxillary palpi more or less dilated, mentum 

 pentagonal. The North American species I refer to this genus, all 

 have the antennal club abruptly 3-jointed, but cannot constitute more 

 than a section of the original genus on that account. Those species 

 had been confounded with Oyrtotriplacb \_Tritoma] by Lacordaire and 

 subsequent writers, but certainly belong here by the structure of the 

 mentum ; they differ moreover by the absence of a scutellar stria. 



M. sanguinipennis, (Say) J. Phil. (1) iv. ; 89; Lee. J. Phil. (2) i.,71; Pr. 

 Phil, vii., 162, 7. — Broadly ovate, shining, black; elytra, palpi, last ventral seg- 

 ment and tarsi red; head rather sparingly punctate; thorax broad, distinctly 

 but sparingly punctate, sinuate on either side the base (the sinuation with very 

 coarse deep punctures) ; scutellum red,impunctate; elytra red, deeply punctate 

 striae, (the punctures closely placed), interstices distinctly punctate; ventral 

 segments punctulate, meta-epipleurse with a few coarse punctures. L. -16 — -18 

 inch. 



Georgia, Ohio, Illinois, New York, Kentucky, Washington, Penn- 

 sylvania. (Leconte, Horn, Ulke.) 



M. pulchra, (Say) J. Phil. (1) v., 301 ; Lee. Pr. Phil, vii., 162, 8; cincta, 

 (Lac.) Erot., 223. — Ovate, black, elytra red, apical third obliquely black; tho- 

 rax sparingly and deeply punctured, base sinuate, with coarser punctures; 

 scutellum black, faintly punctulate; elytra deeply punctate striate, interstices 

 sparsely and very finely punctulate; sides of metasternum and epipieura; 

 coarsely punctate. L. -14 — -16 inch. 



Var. dimidiata, (Lac.) Erot., 224; basale, (Mels.) Pr. Phil, iii., 175; pulchra, % 

 Lee. J. Phil. (2) i.,71. 



Nova Scotia, Pennsylvania, Washington, Georgia. (Leconte, Ulke.) 

 In this variety the black color of the elytra is divided off by an an- 

 gulated line, sloping up a little from the suture and then down to the 

 marinu behind the middle. 



