1897.] NATURAL SCIENCES OF PHILADELPHIA. 247 



apical portion, its anterior margin slightly incurved in the middle ; 

 eyes almost reaching mandibles, converging above, the space between 

 them at that point less than the length of first flagellum joint, but 

 greater than the second ; space between hind ocelli about equal or 

 slightly less than that between them and eyes ; first flagellum joint 

 nearly one-third longer than second ; pronotum angulate behind ; 

 middle segment rounded, not impressed ; legs tolerably spinose, an- 

 terior tarsal comb short, composed of well-separated spines, claws 

 with a rather blunt tooth in the middle, longer spur of hind tibiae 

 equal to about two-thirds the length of first hind tarsal joint, in 

 smaller specimens somewhat less ; abdomen with cinereous pile, with 

 a few, black hairs at apex and beneath ; wings having the costal 

 half of superiors fuscous, otherwise subhyaline (a hyaline streak in 

 the median cell), nervures black ; marginal rather short and narrow, 

 second submarginal somewhat wider than third. Length 10-15 mm. 



Chapada (February, April). Six specimens. 



These specimens are subject to variation : The yellow macula- 

 tion is restricted or extended, the thorax being almost destitute of 

 yellow in some, while in others that color is decidedly evident. The 

 hind margin of pronotum, two stripes on dorsulum, spots on middle 

 segment are yellow in one example, while another has the anterior 

 portion of clypeus, wine-colored. The front has peculiar sculpture, 

 which is difficult to describe, but which may be said to consist of 

 elongate punctures, coalescing and forming irregular, wavy strise. 



Pompilus exquisitus n. sp. 



9 . — Head and thorax black, including coxae, trochanters and 

 base of femora ; abdomen, legs and antenna?, wine-color ; clypeus 

 (except base), labrum, mandibles, inner and posterior orbits, face, 

 stripe extending from between antennas up to center of front, hind 

 margin of pronotum, two stripes on dorsulum, spot on each side of 

 scutellum, the postscutellum, apex of middle segment and two dots 

 before it, dot on metapleurae, an interrupted oblique stripe on meso- 

 pleurse, coxa? more or less, base of abdominal segments, particularly 

 the first and second dorsals, the others obscurely, yellow ; clypeus 

 with some large punctures apically, its fore margin slightly incurved 

 in the middle; front very finely punctured, not impressed; eyes 

 almost reaching mandibles, converging above, the space between 

 them at that point greater than length of first flagellum joint ; space 

 between hind ocelli a little less than that between them and eyes ; 

 antenna? rather short, the first flagellum joint nearly twice as long 



