340 PROCEEDINGS OP THE ACADEMY OF 



8. Bembidium paludosum. A specimen from Oregon, given me by Mr. 

 Ulke, only differs from those fonnd at Lake Superior, by the thorax being a 

 little less transverse, and a little more narrowed in front. In a European 

 specimen before me, the thorax is slightly and equally narrowed before and 

 behind, and is but little broader than its length ; the single specimen from 

 Lake Superior, described by me as B. 1 a c u s t r e , exactly agrees with it in 

 these respects. It is impossible to say with the limited series of specimens 

 before me whether these three forms should be considered as races or species. 



9. Bembidium quadrulum, aeneo-nigrum, nitidum, thorace minus con- 

 vexo latitudine breviore, subquadrato, postice vix angustato, lateribus late 

 rotundatis, angulis posticis subrectis, basi utrinque biimpresso, carinulaque 

 ad angulum munito ; elytris thorace latioribus parum couvexis, striis fortiter 

 punctatis, ad apicem obliteratis, 3ia bipunctata, 7ma ad apiceni exarata. 

 Long. -20. 



East of Fort Colville ; Mr. Gibbs. This species has the same size, shape, 

 color and sculpture as B. salebratus Lee, except that the strbe of the 

 elytra are obliterated at the tip, and the thorax is less rounded on the sides, 

 scarcely perceptibly narrowed behind, with the hind angles more nearly rect- 

 angular. The inner basal impression is deep, and the outer one small ; the pos- 

 terior transverse impression and the dorsal line are deeply impressed. The 

 eighth and ninth striae of the elytra are approximate, but do not unite until 

 very near the shoulder. 



10. B. dy schirinum, elongatum, convexum, nigro-aeneum, pernitidum, 

 thorace transverso cordato, postice angustato, lateribus rotundatis ad angulos 

 posticos rectos breviter sinuatis, basi utrinque profunde foveato, et cannula 

 externa munito, elytris ovalibus, thorace paulo latioribus seriatim punctatis, 

 postice laevibus, interstitio 3io bipunctato, tibiis tarsisque nigro-testaceis. 

 Long. - 19. 



East of Fort Colville ; one specimen. Allied to B. n i te n s Lee. (Peryphus 

 picipes JMann.), but is smaller and more convex, with the sides of the thorax 

 less sinuate towards the hind angles, and the base free from punctures. 



11. Agabus morulus, latiusculus, subovatus, niger, nitidus, baud reti- 

 culatus, dense subtiliter punctulatus, antennis palpis tarsisque piceo-rufis, 

 elytrorum seriebus punctorum fere obsoletis. Long. *22. 



California ; Mr. Murray ; one specimen. Resembles in form A. obtusatus, 

 but is less obtuse anteriorly, and not at all reticulated ; the anterior tarsi of 

 the male are but very slightly dilated, and the claws are not deformed. 

 There is no appearance of elytral spots. The body is equally attenuated be- 

 fore and behind. 



12. Agabus lineellus, regulariter ovalis, piceo-ferrugineus nitidus, sub- 

 tilissime, reticulatus, elytris testaceis, sutura et vittis utrinque 4 angustis 

 nigris antice abbreviatis, nebulisque externis piceis ornatis, seriebus puncto- 

 rum solitis distinctis, sternis piceis. Long. -30. 



California ; Mr. Murray ; one male. The only other vittate species found 

 in the United States is A. taeniolatus Harris, from which this is abund- 

 antly distinct by the narrower vittae occupying only the inner two-thirds of 

 elytra ; the meshes of the reticulation are not so small ; the head and thorax 

 is clouded with darker color as in that species. 



13. Agabus confertus, ovalis, modice convexus, aeneo-niger nitidus, 

 dense punctulatus, haud reticulatus, thorace minus fortiter marginato, latitu- 

 dine fere triplo breviore, elytris lineola laterali guttaque postica pallidis 

 ornatis, seriebus punctorum solitis distinctis, antennis ore pedibusque anticis 

 piceo-rufis. Long. # 32. 



Cabo de los Reyes ; Mr. G. Davidson ; one male. Of the same form and size 

 as A. semivittat us Lee, but with the thorax shorter, more strongly nar- 



[Nov. 



