NATURAL SCIENCES OF PHILADELPHIA. 327 



78. N. hebes Kirby is a variety of yespilloides; the protliorax 

 is as in maritimus, club of antemiffi entirely black, elytra with two 

 bauds, the front one extending forwards on the epipleurai to the 

 humeri, leaving a black portion behind the humerus on the upper 

 side of the epipleura. 



79. Leiodes punctostrtatus Kirby has the hind tarsi 4-jointed, 

 and is therefore an Anisotoma, and not Hydnobius, as incorrectly 

 stated by Erichson. The punctures of the rows are very large, 

 and those of the alternate spaces also large. 



80. Pselaphodes Westwood is allied to Tmesiphorus, but 

 differs in form of palpi. 



81. Sintectus Westwood equals Tmesiphorus Lee. The Aus- 

 tralian species closely resembles T. costalis Lee. 



82. Aleochara pallitarsis Kirby is a rather large black Ho- 

 malota, with the prothorax broadly impressed near the base, and 

 feebly channelled; elytra brownish, a little wider than prothorax, 

 finely not densely punctulate and pubescent; abdomen dorsal 

 surface shining, not strongly punctured ; antennte heavy, black, 

 2d and 3d joints each more than ^ longer than 4th ; scape stouter 

 and a little longer than the 2d. A common species. 



83. Tachyp07nis acuductus Kirby is ventriculus Say ; the right 

 elytron is striated and rugose towards the tip, but the left is uni- 

 formly finely punctulate. 



84. T. AFFiNis Kirby is nearly of the same form, but less con- 

 vex; the prothorax very finely, and the elytra very strongly punc- 

 tulate. 



85. Omalium planipenne Miiklin is 0. j^ineti Thomson. 



86. Distemmus ARGUS is very similar to and perhaps identical 

 with a European species of Omalium. 



87. Omalium marginatum Kirby is an Olophrum with the pro- 

 thorax sparsely and coarsely punctured, slightl}' narrowed behind, 

 hind angles obtuse but distinct, disk moderately convex; elytra 

 very strongly punctured, nearly as long as the abdomen. De- 

 scribed by Maeklin under the same name. 



88. 0. sanguineum and perocellatum\. B. M., from Hudson Baj', 

 are allied to 0. convexicolle Lee. 



89. Acidota seriata Lee. is crenata (Fabr.) according to Miiklin, 

 Stettin Ent. Zeitung, 1872, 247. 



89a. Nitidula obscura and ossiuyn Kirby is the black immacu- 



