198 WII,MAM J. KOX. 



scfiiueiit will) tlio, cnclosiin' st nni.nly marked, the iiniircsscd lines eiirhisiii'j; it 

 foveolate, as well as its base, where there are sometimes a few short, loiiKitudiiial 

 strise, the medial furrow decj) and exteiidiuK the entire length of the uietathorax, 

 tlie jiosterior face with some tolerably coarse, transverse mgx ajjically ; middle 

 arid hind tibia' with short, stout spines; wings fusco-hyaline, paler basally, iri- 

 desccnl, lurviires and stigma l)laek ; abdomen glabrous, microscoincally jmnc- 

 tured, above on the fifth segment more strongly, beneath inipunctate; pygidium 

 with strong. sei)arated punctures, convex at base, excavated apically. Black ; tips 

 of mandibles, teguhe and apex of abdomen sometimes reddish testaceous ; cly- 

 peus with dense, silvery pubescence, that on cheeks, thorax on sides and bt iieath, 

 sparser; legs entirely black, with a silvery sericeous i)ile. Length 7.5-b mm. 



-jj . — Clypeus s-trongly carinated, its fore margin rounded out medially; head a 

 little more finely punctured than in the 9 \ impressed lines on metathorax above 

 stronger, the posterior face with the apical rugai stronger, as are likewise the lateral 

 ridges, and just outside of these is a strong furrow within a short distance of the 

 metathoracic stignuc (this is le.-is distinct in some specimens than in others) ; ab- 

 domen microscopically punctured above and beneath, the last two doi-sal .segments 

 most strongly. Length 0.5 7 miii. 



Colonulo ; Wiishiiiut )ii ; Mt. Hood, Oregon; Brunswick, Maine 

 (Ptiekard ) ; New Hiunp.^^lui-c. The s[)eeiinen with yeUow seajje and 

 base of hind til)ia', recorded fVoiu We.st Virginiu, by I'acktird, is 

 evidently another .species, and verv likely ( '. )il(/rlcorni.'<. 



20. (Jroup nl)(li)iiiiii(il'ix. 



In this f^roiip the abdomen is petiolate, but the first segment is 

 scarcely nodose at the apex ; pygidiiun bi-oad, not depressed ; the 

 head is greatly [iroduced behind the eyes ; the ocelli forming a low 

 triangle, the hind pair being widely se|)arated ; .sculpture of head 

 and thorax coarse, niesoi)lenne ridged anteriorly. In this latter 

 character the group shows its relationship to the preceding groups, 

 all of which exhibit it in a more or less developed state. In the 

 last two groups, occhh'iiUdh and peilm'lkdm^ this character is wanting. 



87. Crabi*4» alMloiiiiiialis n. sp. 



9. — Clypeus very short, flat; just behind it, between the antennte, there is a 

 shoi-t, stout projection ; mandibles large, at the apex armed with two very strong, 

 diverging teeth, which are extremely large for the size of the species ; head cov- 

 ered with coarse, rather close punctures, finer on the cheeks; ocelli in a low tri- 

 angle, the space between the hind ])air decidedly greater than that between them 

 and the nearest eye-margin ; at the side of each hind ocellus is a wide imjiression, 

 which extends back some distance ; frontal depression deep, the line extending 

 to the fore ocellus strongly marked ; first joint of flagellum about one-third 

 longer than the second, and is also nnich longer than the pedicellum, which is a 

 ittle longer than the second joint of rtagellum ; the cheeks are cut off obliquely 

 i)eueath ; pronotum sharply angulate at the sides, with a strong impression in the 

 middle; thorax coarsely punctured, but more closely so than the head; middle 



