OLEOPTERA OF SOUTHWESTERN PENNSYLVANIA. 



351 



Oodes amaroides.— Wet places, not common. 



Geopinus incrassatus. -Rather scarce, sandy sh<.res. 



Cratacanthus dubius.-Not abundant, everywhere. 



Agonoderus lineola.-Three examples, sandy beach : pnlUp,. and var. comma, 



everywhere ; partiariux. pauperodns, not common. 

 Gynandropus hylacis.-Under bark of standing trees. 

 HarpaluB dichrous, vulpeeidus, common, under stones on hills: «,»»te not 



common ; Me,acepharns, spadiceus, fallax, rare ; herUvagas. everywhere ; vrd.au., 



not rare, under stones on hills, matures in Autumn ; basilans, two examples. 

 Selenopborus palliatus.-Rare, sandy beaches; .;cu,«to.. not v^ve-opahnus, 



occasional on river beach ; elHpiicns var. granarin.. not common, under stones 



on beach. May. . , ,^,- ,.,„ 



Stenolophus fuliginosus.-Not rare; pMeins, wet places in grass; h,nnn^^ 

 abundant, same habitat; conjnnctus (red thorax), everywhere; var. with 

 black thorax, in grass about fences; ockropezu., everywhere; alternans, rare, 

 semi-aquatic, wet sandy places along streams. 

 Acupalpus carus.— By sweeping in marshes. 



Bradycellus rupestris and varieties, everywhere. , . , , 



Tachycellus kirbyi.-In a swamp soon to be drained ; atri,nedms, humul pla.'es ; 



badiipennis, less abundant. 

 Anisodactylus rusticus.-Type form, everywhere; carbonarms co^m,M>n ; 

 interpmctatas, two examples; agncola, harrisil ni,.rr»n«. moderately abun- 

 dant; «<7nto, three examples; mdanopus, not common; d^sco^deus, baltmor- 

 e^isis, alluvial places and near water ; piceus, three examples ; agUr., four ex- 

 amples; termincd^s, nitidipeunis, exer^^heve.; cwnns. two examples at light, 

 Ugubris. hderstUiaU:^. abundant ; ^enceus, occasionally at light. 



HALIPLID^. 



The species have not been collected exhaustively ; i/«/.>/—/-«i. and Cnend- 

 dotus 12-punctMn^ are frequent. 



DYTISCID^. 



The Dvtiscid* have nol been exhaustively collected, and many more species will 

 reward the collector who has suitable opportunities. The species tabulated 

 are mostlv common, unless otherwise noted. 



CcElambus impressopunctatus and DeronecUs griseostriatus were taken but 

 once- H,idropon,svM:pMier, two examples: vUiosas and oftiongH.s are seem- 

 ingly rare, the latter also occurs at St. Vincent; Agabas stagmnus, four exam- 

 ples at once in a swamp; tienicolatm, three examples in dillerent swamps; 

 Colymbetes smJptilh seems rare. 



GYRINID^. 



The diagnosis of the species of Giinna^ is more or less opinionative. and othei-s 

 may occur here. 



HYDROPHILID^. 



Other species than those listed await a collector with greater opportunities. 



Ochthebius benefossus, foveicMi., occurred near St. Vincent; lropi>^ernMs 

 striolatas three examples once ; Philydrus hanMoni. not common : Ci,mh,od!,ta 

 blanchardi, spring runs on hillsides; Hydrohins globosas, rare, on stones in 



OCTOBER, 1895. 

 TRANS. .\M. KNT. SOC. XXII. 



