40 



PROCFIEDINGS OF THE NATIONAL MUSEUM. 



ECOLOGICAL NOTES— ( '..ntimied. 



Hiidrohlua trRfirlnhix, very rare; tlieotliers 

 common. 



Creniphilux subcuprex.^, very abundant in 

 running water. 



Plumonotum exstriaium, in swamps. 



Cercyon vmpunctatus, in horse dung; prw- 

 texialus, in dung and decaying plants; 

 ■indhiinctus, one specimen; h.rmorrhoid- 

 (dis, in fungi; also vnrindnrif! and »?^- 

 hescetts; the rest are more (ir lea- com- 

 mon in rotten vegetable matttr. 



Cryptopleurum miniduni, common; <tmeri- 

 canum, very rare. 



Pemelns costfdufi, very rare in rotten fungi. 



LEPTINIDyE. 



Leptinus (estaceun, in the nests of wood 

 mice (Arvicola), in different localities. 



SILPHID/E. 



NecrophnruK itmrricaniis, on dead snakes; 

 also at electric lights; the others are 

 found on various dead animals. 



SUpha surinameii.s'i% very abundant, espe- 

 cially at electric lights; this and the 

 others are found on putrid matters; 

 common. 



Pinudi/te.s cryptojdiar/oidrs, blind, under 

 decayed leaves in rather moist places. 

 This species, in company with Eidyjildiix 

 simllis and Aiiil/us forth, ])oth l)Iind, is 

 frequently found in the mountains of 

 Virginia. 



Cholera. All the species are found under 

 old leaves, in fungi, and on dead 

 animals. 



Prionochxla opacd, like Clio/em. 



Ptorimphagm ulkci, only two specimens 

 were found under decayed leaves, 

 across the Free Bridge; parasitvK, in 

 the nests of Formica Integra. 



Colon. Of paradoxum, hvhhardi, thorac- 

 icum, and asperoluni, oidy single si)eci^ 

 mens have been found. 



Anisoioma obsoleUi, not rare; of idlernaUi 

 and (immilu only single specimens; 

 species of this genus are to be found 

 either under old leaves or in beating 

 meadows at sunset in early summer. 



Colenh impundnUi, very common in fungi 

 and under old leaves. 



Jviodcs. \\] live in rotten wood, ])er- 

 meatcd with fungus growth. 



(''jiinxd, beaten fromgras'^ on warm sum- 

 mer evenings, common. 



h(jplat<ln.^fossor, like Cyrlii.Mi, but rare. 



Agathidium, in rotten wood and under 

 old bark. 



Aglyptus hmis, like Agathidium. 



ClamhuH gibbnhis, under Hood de])ris: 

 pvbendK--, less common. 



miKiiia, sifted from 



CIieiTobdia am 

 ver\' rare. 



Brachycrcpis, not rare, under old leaves. 



SeydmnTiKx rasit.^, nnder bark of old 

 stumps, always in company with Ltisiu.^ 

 aliemis; all the other si)ecies occur 

 under old leaves in damp places. 



Knmicnix motHchdfilni. very abundant; 

 groshms, rather rai-e. 



Cholerus zimmrriiKDiiii, rather rare. 



Cpphennimii rar/iorasimi, not rare under 

 old leaves. 



PSELAPHID.E. 



Adranes lecuntei, very rare, with Laxins 

 daviger. 



Ceophyllui< monilis, rare, under bark of 

 rotten trees. 



f'edius ziegleri, common in the hills of 

 Formica Integra and e.rsedoide.^; api- 

 nosvs, under loose bark of old trees. 



Tmesiphorus, like Ceojtliyhis. 



Chennium monilicoDn', very rare, with 

 Pnenolepis parrvla. 



(tenistes, all the species are al)undant 

 under old leaves. 



Tyru.'i hiinieralis, rare, under l)ark of old 

 trees. 



P.^elaplius erichsomi, one si)ecimen under 

 a stone near Woodley Park. 



Tydim loiigipfdpu.^ and iiii)iur, both fre- 

 quently found underold leaves in rather 

 tlry places. 



Eidridiitr.^ ziiiniieriiunriil, rare. 



Ni.wxis tomeidom, rare. 



Di'carthron stigmomm with Aphaenogaater 

 Ireali; exfiedum, one specimen found; 

 the rest by sifting old leaves and sweep- 

 ing meadow grass at sunset. 



