372 PROCEEDINGS OF THE ACADEMY OF 



F. cavipennis, fere linearis, nigra, nitida, tenuiter pubescens, capite 

 lavi. thorace ovali, vel nigro vel piceo, latitudine longiore, parce punctulato, 

 medio vage longitudinaliter impresso, elytris testaceis, thorace paulo latioribus 

 at haud longioribus, fortiter granosis, deplanatis margine laterali elevato 

 acuto ; abdomine Levi, basi vix angustato, segmentis duobns primis, pedibus 

 antennisque testaceis, his apicefuscis. Long. 3-5 mm. 



Mas segmento abdominis dorsali penultimo dente apicali ad medium armato. 



Two specimens found by me on the sea-shore, at San Pedro, California. 

 This species agrees with the preceding in the form of the antenna?, 

 palpi, feet and head ; but the thorax is regularly oval, not narrowed behind : 

 the abdomen is less narrowed towards the base, and broader and natter than 

 in them ; the dorsal surface is entirely without punctures, even in the trans- 

 verse impressions of the first three segments. The antennas and tarsi are very 

 much elongated, as in F. bilobata, cingulata, &c. I observe no sexual 

 differences, except the one mentioned above. 



The following table will distinguish the species of Falagria now before me : 



I. Elytra smooth or punctulate. 



A. Head rounded behind the eyes ; thorax deeply sulcate : 



Thorax finely and densely punctulate. 



Scutellum distinctly channeled 1. scutellaris. 



Scutellum scarcely channeled 2. bilobata. 



Thorax sparsely punctulate 3. cingulata. 



Thorax nearly smooth , 4. lseviuscula. 



B. Head subquadrate behind the eyes. 



a. Thorax deeply sulcate : 

 Elytra densely punctulate : 



Scutellum not channeled . 5. quadriceps. 



Scutellum bicarinate, deeply channeled 6. dissecta. 



Elytra scarcely punctulate, scutellum channeled 7. p art i ta. 



b. Thorax feebly channeled 8. vaga. 



c. Thorax not channeled 9. venustuta. 



II. Elytra granose 10. cavipennis. 



OLIGOTA Mannh. 



0. pedalis, latiuscula, nigra, haud dense punctulata, subtiliter cinereo- 

 pubescens, thorace latitudine duplo breviore, a basi antrorsum angustato ; 

 elytris thorace longioribus, anoque piceis ; antennarum basi pedibusque tes- 

 taceis, illis articulis quatuor ultimis sensim majoribus. Long. -75 mm. fc 



District of Columbia ; one specimen given me by Mr. Ulke. The antenna^ 

 are as long as the head and thorax ; the first and second joints are long and 

 thick ; the third is hardly one-third the thickness of the second, nearly cylin- 

 drical, and not more than one-half longer than its width ; the joints 4 7 

 gradually thicker, the sixth and seventh rounded, eighth and ninth wider, 

 transverse, tenth not wider than the ninth, but longer and obtusely rounded at 

 tip. The upper surface is sparsely punctulate, but more distinctly so on the 

 elytra, which, as well as the tip of the abdomen, are piceous. The form re- 

 sembles that of a small Gyrophama. 



MYPvMEDONIA Er. 



M. rudis, ferruginea, rude punctata parce subtiliter pubescens, capite 

 nigro medio lsevi, thorace canaliculato, transverso, angulis valde rotundatis : 

 elytris nigricantibus, sutura late ferruginea, antennis fuscis basi ferrugineis. 

 Long. 5 5-5 mm. 



Mas thorace granoso-punctato, disco late depresso ; abdominis segmento 

 ultimo dorsali subdentato, apice emarginato, segmentis reliquis apice et medio 

 leevibus. 



Femina thorace punctato, haud impresso, abdominis segmentis dorsalibus 

 fere aequaliter baud dense punctatis, ultimo apice rotundato. 



A very beautiful species found by Mr. Ulke at Washington, D. C, resting on 

 fences, before sunset. The sexual difference in the sculpture of the thorax is 



[Dec. 



