134 E. T. CRESSON. 



'■'■Hah. — Oajaca, Mexico. 



"This is one of the most beautiful species of the family Pompilidic. 

 The v'aviety of its coloring, the briglitness of the silvery pile that covers 

 the legs and other portions of the body, and its mottled wings, readily 

 distinguish it from every known species of the genus." 



Genus NOTOCYPHUS, Smith. 



Mr. Smith (^Brlt. Mns. Cat. Hijm. iii, p. 172) gives the following 

 characters for this genus : — 



" Head as wide as the thorax; eyes large, lateral and ovate; ocelli 

 three, in a triangle on the vertex ; antennae convolute at their apex ; 

 the clypeus short and transverse; the lahrum elongate and jn'oduced. 

 The prothorax subelongate, the metathorax elongate; the thorax is 

 rounded anteriorly, and truncate posteriorly. Wings narrower than in 

 Figure 12. the genus Pompilus ; the anterior pair [see Fig. 



^^^,^===^^^^^^^ y 1^] having one marginal and three submarginal 

 -==;::rrr==r=dCZ___„^^ cells; the second submarginal cell oblicjue, and 

 receiving the first recurrent nervure towards its base; the third sub- 

 marginal cell about the same length as the second, much narrowed to- 

 wards the marginal. Abdomen sessile, acuminate at its apex." 



Three species are described from Brazil and two from 31exico. I 

 have not met with any of them. 



1. Notocyphus plagiatus. , 



Xofori/jihus j)laglatus, Smith, Journal of Entomology, i, p. 398, 9- 



'■•Female. Length 1 inch. — Black; the abdomen with a fine, 

 changeable, silky lustre; the head above the insertion of the antennae 

 and a broad longitudinal stripe on the pro- and mesothorax, the scutel- 

 luui and post-scutellum, blood-red ; the labrum oblong, narrowed to- 

 wards its anterior margin, which is transverse; the wings very dark 

 brown, with a slight violet iridescence i the legs elongate, very slightly 

 spinose; the claws bifid." 

 " Hah.—" Mexico." 



2. Notocyplius albopictus. 



Notocyplms albopictus, Smith, Journal of Entomology, i, p. 398, %. 



'■'Male. Length 4^ lines. — Black, the inner orbits of the eyes^ not 

 extending to their summit, the posterior margin of the prothorax, a 

 spot on the scutellum and another on the postscutellum, the apical an- 

 gles of the metathorax, and the basal half of the third segment of the 

 abdomen, white ; the anterior tarsi rufo-testaceous ; the body covered 

 with a thin cinereous pile ; the wings hyaline, the apical portion of the 

 superior pair, beyond the second submarginal cell, fuscous." 



//t<6.— "Mexico." 



