258 ENTOMOLOGICAL NEWS. [June, ’08 
Metathorax with anenclosure............ pedicellatum Pack 
Metathorax without an enclosure... 2. +. 2)»: an x 
1. Abdomen banded with reddish, anterior four legs entirely yellow ; 
basal joint of middle tarsisimple . ..... rufogaster Pack. 
Abdomen black ; anterior four legs more or less black ; basal joint of 
middle tarsi with a spine within ....... modestum Roh. 
The following table will separate all the species mentioned above : 
Females ..060 S663 oe. eB 3 es z 
Males. (4°03), 30. 5 0. GR... Se 16. 
1. Pygidium broad, flat, not strongly excavated towards apex. . . . 2. 
Pygidium narrow, strongly excavated ...........4--. 10. 
2. Small species; abdomen entirely black ............-. 3. 
Large or medium size species; abdomen marked with yellow. . . 5. 
3: Ovceitine low triangle... S00. . a ign ee errans Fox. 
Ocelli in an equilateral triangle. . . ,../6 4...) .) ae 4. 
4. Shining; scutellum yellow; fore trochanters and femora reddish. 
cockerelli Roh. 
Subopaque; scutellum black; fore trochanters and femora black. 
eriogoni Roh. 
5. Ocelli in an equilateral triangle; head and dorsulum finely punctured; 
mesopleurae shining, with a few punctures. . confertus Fox. 
Ocelliin alow.triangle. . . . .\u5. 5). «5. 4 en ee 6. 
6. Mesopleurae shining; with few punctures. ........... aM 
Mesopleurae subopaque, striato-punctate or striated. ...... 8. 
7. Stigma and costa dark brown ; ocelli (dry) deep black ; metathorax 
more strongly Schiiptured Mts sce e ea conspicuus Cress. 
Stigma and costa ferruginous; ocelli (dry) yellowish ; metathorax 
not so coarsely punctured. .......... vincus Cress. 
8. Pygidium strongly margined by a wall, slightly but distinctly de- 
pressed apically ; head not larger than usual. . .dilectus Cress. 
Pygidium not thus margined, not depressed apically; head large. . 9. 
g. Enclosure of metathorax striato-punctate ; legs partly rufous. 
rufifemur Pack. 
Enclosure of metathorax obliquely striated ; legs yellow and black. 
megacephalus Roh. 
10. Ocelli in an equilateral triangle ; shining black. . . nigricornis Prov. 
Ocelliin alow triangle .. . 2... 2 29} ss) ee II. 
11. Clypeus produced into a truncated process. .......+4+:5 12; 
Clypeus rounded anteriorly, not produced into a truncate process... 13. 
12. Head densely, finely punctured ; clypeus with some golden pubes- 
COUCH ee. we 8 a nokomis Roh. 
Head with large punctures ; pubescence of clypeus silvery. 
bellus Cress. 
13. Posterior face with strong lateral ridges ; abdomen with small yellow 
spots ; slender head, thorax and abdomen nude . operus Roh. 
Posterior face of metathorax without strong lateral ridges. . . . 14. 
