374 PROCEEDINGS OP THE ACADEMY OF 



of the three genera above named, that a brief synopsis of the distinguishing 

 characters of those which I have investigated seems to me to be useful for the 

 proper naming of the specimens contained in local cabinets. 



I may also add that the determinations of Baron Chaudoir, who is the fortu- 

 nate possessor of the Dejeanian types, must be taken as conclusive, regarding 

 the species of that author ; the original descriptions were unfortunately defec- 

 tive in some respects, and my recognition of his species was therefore erro- 

 neous. 



In all the species mentioned in this synopsis, except Bradycellus d i c h r o u s, 

 vulpeculus and a u t u m n a 1 i s, the marginal line limiting the bead of the 

 prothorax is obliterated for a greater or less extent at the middle of the base, 

 but in those three species it is entire, as in the true Harpali, with which, per- 

 haps, they should more properly be associated. 



AGONODERUS Dej. 



In the species of this genus the emargination of the mentum is less semicir- 

 cular in outline than in Stenolophus, but equally destitute of any vestige of a 

 tooth ; the sides of the emargination are more oblique and the bottom there- 

 fore narrower, like a broadly rounded angle ; the body is rather stouter and 

 more convex, the joints of the antenna; thicker, the hind tibiaj and tarsi less 

 slender, the joints 1 — 4 of the latter diminishing in length less rapidly, the 

 front tibiae stouter and more strongly spinose near the tip, and finally the front 

 tarsi are alike in form in both sexes and in the more slender species thinly 

 clothed with a few papillas. 



Our species, all but one of which, as far as known, are represented in my 

 collection, diminish gradually in size, and may be grouped as follows, the dor- 

 sal puncture being wanting only in A. infuscatus: 



A. Body stouter and more convex : prothorax transverse, quadrate-oval. 



a. Hind angles of prothorax very much rounded. 



7 — 8-5 mm. Pale yellow above ; prothorax with two discoidal spots ; scu- 

 tellar stria long; elytra with two dark stripes separated by the sutural inter- 

 val; dorsal puncture distinct 1. 1 i n e o 1 a. 



6-5 mm. Dark testaceous or piceous, narrow margin of prothorax and 

 broader one of elytra pale; scutellar stria shorter; dorsal puncture want- 

 ing 2. i n f u s c at u s. 



b. Prothorax nearly quadrate ; hind angles obtuse, slightly rounded ; sides 

 less rounded. 



8 mm. Pale yellow ; head behind the eyes black, with an occipital round 

 yellow spot; prothorax with two discoidal oval black spots; base finely and 

 not densely punctured ; elytra with two dark stripes, as in lineola ; scutellar stria 

 long. (Differs from lineola chiefly by the form of the prothorax.) California, 

 and Nevada 3. maculatus, n. sp. 



B. Body more elongate, less convex ; prothorax scarcely wider than long ; 

 subtrapezoidal, being more or less distinctly narrowed behind ; elytra with one 

 dorsal puncture. 



a. Larger species ; color pale; elytra with a wide black stripe, divided by 

 the suture ; disc of prothorax frequently with a large black spot ; head always 

 black. 



5.5 — 6 mm. Hind angles of prothorax rounded ; scutellar stria long. 



4. comma. 



5.5 — 7 mm. Bind angles of prothorax scarcely rounded ; scutellar stria 

 short 5. p al lipes. 



7 mm. Sides of prothorax subsinuate behind ; hind angles rounded : scu- 

 tellar stria short? (interrupted in the only specimen I have seen) ; hind tarsi 

 stouter ih&n\n palUpes. California 6. r u g i c o 1 1 i s. 



[Dec. 



