42 I']!OrEEDTNnS OF THE NATIONAL MUSEUM. 



ECOLOGICAL NOTES— Continued. 



EAinsfliclnsaniericdiiKx, under moist leaves. Me(jtil()i»^ cirldtus, very rare, on fungi grow- 



Edaphus nitidus, under moldy leaves. ing under logs. 



Stictocranius ptincticeps, under old leaves, O.rjiporus, all the s))ecies live exclusively 



but not common. in toadstools. 



Crii/iloliiinii hicolor, ji(dlipes, caroluinm, (Morivs Iniipes, not rare, burnming in the 



(•(.iiniKiu in swampy places near the ground under stones. 



liver; Ixnlin iird\u\crihratn.))i, ratherrare; HoInlnicJinx hrricmuht, rather rare. 



xrr/x'iitiinnn and Ihtriconic, very rare. Il/cdins. These si)ecies live on mud or 



Lai hnthi II III, liW very common under old sand banks near the river. 



leaves, except ariiKitinn, ximiU' ami niii- I'/dtj/sli'lJiiis miier'icitinix, exceedingly com- 



hii/iiinn. mon in dung. 



Srd/t.Tiis, like Lalhrohiviii, connnon. O.nitcbix. These species, with the excep- 



StlliriiK trlsfts and hiariiKitnx, rare; dnita- turn of plaruaimtn, which is myrme- 



his, connnon in fungi. cophilous,liveeitherindnngordecaying 



Lilliorliin-i.^ ochracea, rather common. vegetation. 



Aderoc}iarlf! rorticina , very common under TriKjujilihrm, all live on nuid banks (^r in 



moist old leaves. decaying leaves in nuiddy swamps. 



Traelq/Kerfus confiueris, imder moist bark Ajtocelln.'^ spharicollis, very common under 



of old trees, abundant. stones, everywhere. 



I'lt'dcni.^ Uftorariiis, very abundant every- Aiiryrophorus, found on stones in a small 



where. creek near Cabin John Bridge. 



Simiiis, like Pivderm. Thinohiiis fimhriatiis, on gravel banks near 



Erhia.stcr {Leptogenius), an apparently the Eastern Branch. 



undescribed species, not rare under old Gendromiem emus and Lestem pallipes, 



leaves. common along water courses. 



Stilicopsis 7n)>nstr()>fa, connnon; jxirado.ni, Aridotn subcarinata, not rare under leaves 



very rare. in the fall. 



Pinophilus latipes, not rare under stones; Arjiedium schvurzi, very abundant under 



piripes, one specimen. old leaves. 



Piilaniiniis ti'stacevs, common; coiitnrfus, Ohiphrmii, like Arpidiitui. 



rare. lloindHnin JiiiiiurusHni and rrjxiiidmii, 



3//c/r>c//p^w.< /o'/ffcc/f.x', one specimen among connnon under old leaves; dijf'iisinii, in 



termites. fungi; frnclinii, under moist bark; 



Tachinus memnonius, hiridus, Jiarldiis, fun- liduKitniii, on dry leaves of felled trees. 



briatus, pallipes, in fungi; finiiipenn'n^, Aiithohhnii ronre.rum, very abundant on 



(•ommon in dung; repjandus, iiinhatits, flowers in early spring. 



and m<idi(foid<;.>; under old leaves. Ephelis notafa, very common; (/nftnta, 



Tachypoms, all under old leaves and rare. 



stones; maculipennis, rare. I'rodrms atomarlitK, very connnon mider 



Cifea silphoides, very abundant in horse old leaves. 



manure. Megarthrus ainericdniis, in fungi, not com- 



Erchomus rcutricidns, abundant under mon. 



moist old bark; /,7'()/.s, under old leaves. Lisplims cvif/inis, one specimen under 



Conosomn. All the species of this genus bark. 



live under old leaves or on fungi grow- (IhjptiniKi ro.'^talr, in decaying wood, very 



ing on dead trees. connnon. 



Bolitobvm, more or less common in Trign picijx'iniis, under bark of various 



fungi. trees. 



Brijuporiix riifcsiriis, very abundant imder ?^/<'iisis pallidum, found once in great num- 



old leaves; flmupes, two specimens. bers under the bark of an old stump. 



Myceloponis, all species occur under old Siagonium americanum, one specimen. 



leaves. Micropeplus cribrains, one specimen. 



