44. SYNOPTIC TABLES OF COLE< >PTERA 



planipennis,\jz<c. New Species. 1863. p. 6. —cribricoIIis%, Lee. Ann. Lye. IV. [86. 



=/>rciw'/c')i)ii's, Zimm. Trans. Am, Ent. Soc. 1869. p. 2^$.=ni<irgiiMt<iX, Chaud. I.e. 



p. 96. New Mex. Kan>. — 12 mm. 

 elegans, Lee. Ann. Lye. IV, 186, N.Y. — 11 mm. 

 wiicolo?-, Kby. Faun. Bor. Am. IV, iq=hudsonica, Lee. New Spec. 1S63. p. 6; 



Acad. 1873, P- 3 22 - Lake Sup. Labrador — 9 mm. 

 amcricana, Dej. Spec. II, 446. Chaud. I.e., p. i02.=2 , c-/in/i>r, Dej. Spec. V, 311. C lid. 



1. c, p. 103. N. Y. — 11 mm. 

 cribrata, Lee. Col. Kansas, 1859. p. 2. Nebr. Kans. — 10 mm. 

 pilosa, Say. Trans. Am. Phil. Soc. II, io.=pubescens, Dej. Spec. 1,215. .V*'. -10-II. 



mm. 

 borealis, Lee. New Spec. 1863, p. 7. North Red River, Nova Scotia. — 9-10 mm. 

 mglecta, Hald., Pioc. Acacl. I. 298. N. Y. Pa. — 8 mm. 



APRISTUS, Chaud. 



By Geo. H. Horn, M. D. 



A genus composed of small black species, differing from all our Dro- 

 miide genera by the simple slender claws. The mentum is toothed, the 

 ligula small, cordiform and quadri-setose in front, completely surrounded 

 by its paraglossse, the thorax is truncate at base. 



The species occurring in our fauna are as follows: 



Elytral strise deeply impressed, those at the sides more feebly; thorax a little wider 



than long. 



Hind angles of thorax acute, slightly prominent, the lateral margin a little broader 



and more reflexed posteriorly; median line of thorax deep and reaching the basal 



margin; intervals of elytra rather strongly convex; surface color nearly always 



black COrdicolIis, Lee. 



Hind angles of thorax rectangular not prominent, the lateral margin not wider behind; 

 median line fine usually not attaining the basal margin; intervals moderately con- 

 vex, surface bronzed SUtSlllcatUS, Dej. 



Elytral striae feeble, those at the sides nearly obsolete ; thorax about one fourth wider 



than long. 



Hind angles of thorax rectangular not prominent, margin not wider behind; median 



line deeply impresssed at middle and very faintly reaching the basal margin; 



color slightly bronzed laticollis, Lee . 



BIBLIOGRAPHY. 



cordicollis, Lee. (Dromius) Ann. Lye. IV, 190, N. Y. — 4.5 mm. 



subsnkatiis, Dej. (Dromius) Spec. II, q.§l.=latens, Lee. Ann. Lye. IV, \qi.=fusii- 



pennis, Motch. Bull. Mosc. 1864. Ill, 233. N.Y. Can. — 3.5-4 mm. 

 laticollis, I^ec. Ann. Lye. V, 176. Cal. — 4 mm. 



