\^C) BULLETIN 15, UNITED STATES NATIONAL MUSEUM. 



TABLE OV SPECIES. 



1 r.MAI.KS. 



Aiitenn;v not niinnlafed with whilo 2 



Aiitt'iiii;i' auiiulati'd willi white. 



First, second, and third fnniilar joints white 1'. axnii.kounis, s]». udv. 



2. Antenn:e not wholly hlai-k, th(^ scape riiioiis or yellow 1 



Antcnni^ with the scape ]i;ile only ;it l>ase 'A 



Antt'nuii' wholly hlaek. 



Legs whcdly blaek. 

 Tliorax ni«;()S(\ opa<|ne. 



Face louyitiidinally striated 1*. XKiRli'ES, sp. nov. 



Thorax finely punctate, shining. 



Face striate toward base of antama- P. mklanopis, sp. nov. 



Thoi'ax smooth, shining at the most microscopically punctate. 



Face smooth, shining P. pkxxsyi.vaxica, sji. nov. 



Legs not wholly black. 

 Legs, excejit knees and tarsi, bl«ck or dark fuscous. 

 Thorax rugoso-puuctatc; lower part of face striate. 

 Scutellum rugose, opaque; wings abbreviated. .. .P. utahexsis, sp. nov. 



Scutellum smooth, polished P. calii-orxica, sp. uov. 



Thorax closely striately i)unctate; scutellum faintly punctate, opaque. 



Face smooth, shining P. L.KVii-noxs, sp. uov. 



Thorax tinely rugose, sul>opa(|ne; scutellum shining, faintly punctate. 

 Face shining but sparsely iinely j>unctate P. xana, sp. nov. 



3. Coxa» black ; legs, unless otherwise mentioned, pale rufous. 



Thorax closely punctulate. 



Face highly polished; tibia- and tarsi, fuscous P. caraborum, Riley. 



Thorax and scutellum longitudinally'rugulose. 



Frons i)olislied bnt with some scattered punctures. 



P. I'UXCTivKXTRis, sp. nov. 

 Thorax and scutellum tinely rugoso-iJunctate, opaque. 



Frons shining, feebly sh.agreened. with some scattered i)unctures. 



P. sCHWARZii, sp. nov. 

 Thorax iiolished, sparsely punctate; scutellum polished. 



Frons polished; posterior tibia- fuscous above P. pusilla, sp. nov. 



Tliorax iinely punctulate; head and scutellum smo()th. shining; legs pale 



brownish-yellow P. (ihacilicorxis, sji. nov. 



Coxa- and legs ))alo rufous or brownish-yellow. 

 Thorax and scutellum rugoso-punetiite. 



Frons smooth, sparsely punctate P. :marylaxdic'A, sp. nov. 



Frcms coarsely longitudinally striate P. iuscipexnis, Ashm. 



Thorax an<l scutellum shining, faintly punctate. • 



Frons smooth, with some small, faint punctures P. columuiana, sp. uov. 



Thorax tinely punctulate with indications of furrows posteriorly; scutellum 

 smooth, shining. 



Frons highly jtolished, impunctate P. hilixeata, sp. nov. 



Thorax and scutellum tinely rugose, opa(|ue; pleura rufous. 



Frons shining, sparsely, faintly ]»unctate P. pleuralis, sj). uov. 



4. All coxa', except sometimes the last pair, pale r> 



All coxa' black. 



Thorax and scuti-llum coarsely longitudinally rugulose. 



First fiinielar Joint ouc-third shorter than the .second; legs rufous; three 

 basal segmiMits t)f ;ibdomen striate P. foXAl.is, sp. nov. 



