No.li041. THE INSECT FAMILY DELPHACIDAE— CRAWFORD. 575 



Previous students in this group have used coloration very largely 

 in drawing the specific lines. As a matter of fact, this character is 

 useless for that purpose, since any variation of pigmentation may be 

 found among the immense series of specimens. The frons varies 

 from almost entirely brown or dark colored wdth at least a narrow 

 band across the middle lighter than the rest, thi-ough a long and 

 gradual series in which the dark area is more and more replaced by 

 light, often with the effect of blotcliing, to a condition wherein all the 

 brown below the ocelli has disappeared, leaving the lower two-thirds 

 and most of the gen^e creamy white. I have no doubt that S. Ufas- 

 ciata Provancher is a part of this series, since it was separated chiefly 

 on "the pale front." 



Among the series is a lot of a score or more specimens collected in 

 California (exact locality unknown) which, considered alone, might 

 be placed in a distinct species because of the smaller size of the body, 

 the shorter antennae, and the absence of the lower band of brown on 

 frons. But here, again, there is no possible line of division, as the 

 curves show. 



STOBAERA PALLmA Osborn. 

 Plate 47, fig. 0. 

 Stobaera pallida OsBORii '05:375, 47.— Van Duzee '0^9:200. 



Length of body, 2.8 mm.; width of vertex, 0.38; width of frons, 

 0.38; antenna, I, 0.16, II, 0.27. General color light brown; frons 

 with several short white transverse markings; elytra light brown, 

 maculated in male somewhat similarly to tricarinata. Body robust. 

 Head very broad, sometimes broader than entire thorax, strongly 

 carinate; vertex broader than long, square at apex, sides narrowed- 

 between eyes; frons widened to ocelli, then abruptly narrowed con- 

 siderably to apex, narrower below than above, more than half as 

 broad as long; antennae reaching to clypeus, broad, II a little longer 

 than I ; eyes deeply emarginate beneath. 



Pronotum moderately long, angulation of lateral carina rather 

 prominent; hind margin crispate or crimped on lateral half of each 

 side; scutellum broad. Legs rather short, stout; calcar more than 

 haK as lopg as basal tarsus. Elytra somewhat convex, square at 

 apex. 



Male pygofers similar to tricariimta; styles long, slender, acute, 

 apex curved in sharply and hook shaped, with an inner needleUke 

 process below hook. 



Described from two males and two females, all macropterous, one 

 female from Nassau, Florida (E. A. Schwarz), and the others from 

 Bayville, New York, on Baccharis lialimifolia. Osborn's specimens 

 were from Delaware and Maryland on the same plant. This sug- 

 gests somewhat Stal's African genus, AmUycotis. 



