1893.] NATURAL SCIENCES OF PHILADELPHIA. 481 



yond the apex of the submedian cell; legs stout, femora thick, the 

 armature strong; middle eoxce widely separated from each other; 

 middle tibiae, one-spurred; fore tibiae, apart from end spurs and some 

 apical spines, on the outer side tolerably spinose, and in the middle 

 of their inner side armed with a single spine; the tarsal comb is com- 

 posed of a moderate number of short and strong spurs or spines ; claws 

 and their pulvilli tolerably developed; metathorax as long or longer 

 than tlie dorsulum ; abdomen polished, the dorsal ring of third seg- 

 ment of normal construction without basal elevation; last dorsal seg- 

 ment with a pygidial area in the form of a triangle in the 9 the 

 sides of which are slightly bowed outwardly, bearing no pubescence 

 and at the end no little bristles ; in the S the last segment is trape- 

 zoidal and appears margined outwardly as in the species of Tachytes 

 and Tachysphex ; as regards sculpture and punctuation it may be 

 mentioned that it is coarser than in the species of Notogonia. 



Although upwards of two dozen species have been described from 

 the United States as members of this genus, a study of them reveals 

 the fact that but two belong here, the others being either species of 

 Notogonia or Tachysphex. 



1. — L. analis Fab. 



L. analis Fab.. Syst. Piez., 1804, p. 220. 



9- — Scape and pedicellum shining, the flagelluin opaque, with the 

 first joint over one-quarter longer than the second, which joint is evi- 

 dently shorter than the third, the latter is about as long as the fourth; the 

 flagellum is thickest basally ; clypeus convex, with tolerably strong 

 and close punctures, except on antei'ior portion where it is impunctate, 

 the anterior margin rounded ; the front and vertex with the punc- 

 tures much more scattered than on the clypeus, especially behind the 

 ocelli ; from the fore ocellus there extends down a deep furrow ; a 

 deep depression behind the posterior ocelli ; dorsulum strongly and 

 densely punctured ; scutellum not so closely punctured, slightly im- 

 pressed, especially posteriorly ; metaiiotum truncate, granulated, and 

 at base with a raised line which extends about one- fourth its length, 

 posterior face of metathorax transversely wrinkled, the metapleune 

 punctured like the dorsulum, though somewhat more finely so ; legs 

 robust, the tibia? and tarsi strongly spinose ; tegula? with the anterior 

 portion finely punctured ; abdomen shining, with very fine and in- 

 distinct punctures, dorsal segments 2-5 with a sinuous row of large 

 punctures which begins at the base laterally and goes back nearly to 



