NORTH AMERICAN HYMKNOPTEKA. 55 



vertex impunctate. glabrous; prothorax impunctate, tlorsuluin with a few scat- 

 tered, large punctures; the medial furrow of the metathorax is much broader, 

 but hardly as long as in mexicana ; wings hyaline, iridescent, the tips slightly 

 fuscous, the ornamentation is yellowish white, abdomen glabrous, the first seg- 

 ment with a large spot on each side, the other segments marked as in mexicann. 

 Length 7 — 8 mm. 



Orizaba, Mexico. This species is more shining than mexicana. 



10. Ceropales feinoralisi Cress. 



Ceropales femoralis Cress., Proc. Bost. Soc. Nat. Hist, xii, p. 378. 9. 



9 . — Black, shining; antenna? thick, slightly shorter than head and thorax; 

 face, clypeus, coxse, mesopleurse and the apical portion of the metathorax silvery ; 

 anterior orbits broadest above the antennse, narrow posterior orbits, clypeus, 

 except the middle portion, scape beneath, spot on the underside of second an- 

 tennal joint, posterior margin of prothorax, spot on each shoulder, spot on scu- 

 tellum and jiostscutellum, posterior angles of metathorax. all pale yellow; ante- 

 rior and medial legs brownish, the coxjb and trochanters black, spot on anterior 

 coxa? beneath, spot at tip of four posterior ones, and knees of the four anterior 

 legs, pale yellow; the posterior femora, except the base, reddish ; the tibite and 

 tarsi entirely black ; all the abdominal segments with a lateral, sublunate. white 

 mark on the apical margin; wings hyaline, iridescent, dusky toward the apex, 

 second submarginal cell snbquadrate. receiving the first recurrent uervure a little 

 before its middle, the third submarginal cell narrowed one third towards the 

 marginal, receiving the second recurrent nervure at about the middle. Front 

 scarcely impressed medially ; a pit before the anterior ocellus, the posterior ocelli 

 each with a depression on the outer side; thorax strongly and sparsely punc- 

 tured, especially the dorsulum, which has a strong impressed line on each side 

 near the tegulse; metathorax finely rugose, or with fine transverse striae, deeply 

 furrowed, the sulcus reaching to about the centre of metathorax and broadened 

 at the base into a not very distinct excavation ; tegulse brownish 



%,. — Differs from the 9 l>.^ having the frontal impression distinct; the head 

 and thorax more or less silvery, more strongly punctured ; antennae as long as 

 the head and thorax; the metathorax with a strong, somewhat triangular exca- 

 vation at the base, and the clypeus. scutellum and posterior angles of the meta- 

 thorax are without trace of yellow. Length 5 mm. 



Orizaba, Mexico; Colorado, Washington. Three specimens from 

 the United States and the type' from Mexico. The former ditJli 

 from the type in having ail tlie legs reddi.'^h and the scutelhim and 

 posterior angles of metathorax not spotted with yellow. Otherwise 

 I can see no difference between the type from Mexico and those from 

 the United States. 



IL Oropalos l<»ii;;i|>eN Sm. 



Ceropales fitscidta Say, Long's Second Exi)ed. ii. p. 'S'3'.i (nee. Fahr.) 

 Ceropales lougipes Sm., Brit. Mus. Catal. iii p. 179, pi. iv. fig. 2; Walsh. 



Amer. Entom. i, p. 163, % , 1869. 

 Ceropales frigidaSm. , Brit. Mus. Catal. iii. p. 180. 

 9. — Black ; clypeus, labrum, sides of face, broad anterior and nau'ow posterior 



TRANS. AM. ENT. SOC. XIX. MARCH, 1892 



