NATURAL SCIENCES OP PHILADELPHIA. 83 



3. Platynus bembidioides (Sericoda, bemb. Kirby). A specimen was found 

 on Puget Sound by Mr. Davidson, which in no respect differs from one found by 

 me at Lake Superior. 



4. Pterostichus herculaneus Mann. A specimen (-70 long) was found 

 by Mr. Davidson on Puget Sound, which apparently belongs to this species. It 

 is related to P. algidus, but the two basal impressions each side run into a 

 large fovea as in P. c o r a c i n u s , &c, without, however, leaving any promi- 

 nence or punctures between them ; the little ridge adjacent to the margin is 

 more distinct. The elytra have a faint purplish tinge as in P. a m e t h y s t i n u 3. 



5. Anisodactylus semipunctatus, oblongus, niger, vel aeneo-niger niti- 

 dus, capite punctulato, postice parce punctata, thorace latitudine sesqui 

 breviore, postice subangustato, lateribus rotuudatis, postice obliquis subde- 

 pressis, angulis posticis obtusis, confertim subtiliter punctato, basi utrinque 

 paulo impresso, elytris striatis, interstitiis planis alternis parce punctulatis et 

 breviter pubescentibus, stria 2nda postice unipunctata. Long. 15 -5. 



Oregon, Dr. Suckley, California. Resembles in form A. brevicollis Lee , 

 but is distinguished among the black species, having the spur of the anterior 

 tibia toothed each side at base, by the small punctures of the alternate spaces 

 of the elytra. These punctures are sometimes, however, hardly distinct, in 

 which case this may be distinguished from A. brevicollis, consobrinus and 

 californicus, as well by differences in form, as by the sides of the thorax being 

 more distinctly and broadly depressed, and from A. si mil is by the thorax 

 being more narrowed behind, with the posterior angles more obtuse. I find, 

 on careful examination, that the last named species presents traces of fine 

 punctures on the alternate spaces of the elytra. 



6. Agonoderus r u g i c o 1 1 i s, nigro-piceus, thorace testaceo, macula oblonga 

 centrali nigro, latitudine baud breviore, postice paulo angustato, lateribus 

 postice subsinuatis, basi late rotundato subdepresso punctato, angulis posticis 

 rectis rotundatis, elytris testaceis striis profundis, 2nda unipunctata, interstitiis 

 subconvexis, 2, 3 et 4 a quadrante ultra dodrantem nigris, antennis pedibusque 

 testaceis. Long. -28. 



California, Mr. Rathvon. Very similar to A. dorsalis and pallipes, with the 

 posterior angles of the thorax more rounded than in the former, but less than 

 in the latter; it differs from both by the sides being slightly sinuous, by the 

 base being more depressed and punctured, by the disc being very distinctly 

 rugous, and finally by the intervals of the elytra being less convex. 



7. Badister anthracinns, niger, nitidus, thorace latitudine sesqui 

 breviore, postice paulo angustato, angulis posticis obtusis rotundatis, anguste 

 marginato, antice transversini impresso, linea dorsali sat profunda, basi utrinque 

 late impresso alutaceo, elytris striis profundis, 2nda bipunctata. Long. -25. 



Oregon, Dr. Suckley. 



8. Bembidium indistinct um. 9. B. connivens; Oregon, Dr. Suckley. 



10. Bembidium erasum, nigro-aneus, nitidissimus, thorace latitudine 

 breviore, convexiusculo, lateribus rotundatis postice paulo angustato, foveis 

 basalibus profundis bistriatis, basi punctato, elytris thorace latioribus, subcon- 

 vexis, striis internis 2 vel 3 subtiliter punctulatis, externis omnino obliteratis, 

 3ia profunde bipunctata. Long. *17. 



Oregon, Dr. Suckley. Related to B. tetraglyptus, but is more convex and 

 much more shining, with the thorax narrower, and the basal foveaj deeper and 

 punctulate ; the carina at the angle is very distinct. 



11. Bembidium obliquulum, latiusculum, ameum, thorace latitudine 

 sesqui breviore, ante medium angustato et lateribus rotundato, angulis posticis 

 rectis, basi transversim profunde impresso et utrinque bifeoveato, fovea ex- 

 terna obliqua, carina angulari minuta, elytris striis internis 4 vel 5 punctulatis, 

 externis obliteratis, interstitio 3io bipunctato, femoribus nigro-piceis, tibiis 

 tarsisque piceo-rnfis. Long. *24. 



1859.] 



