OSBORN AND BALL — STUDIES OF NORTH AMERICAN JASSOIDEA. 77 



and extending back to the penultimate segment of the abdomen, and 

 the broad lateral margins from the eyes back, white, the outer brown 

 stripe on the abdomen is the darker and bears a row of hair-bearing 

 white spots, one on each segment. Below white; eyes, the upper half 

 of the face, a row of spots along the connexivum and spots against the 

 spines on the hind tibiae black. 



Life History: A few adults were taken in July, no more being 

 found until the larvae which were found in August issued in Septem- 

 ber. From this it is probable they are two-brooded, adults issuing in 

 June and again in August, the ones taken in July being the last of the 

 spring brood. Larvae and adults were both found exclusively on a 

 Michlenbergia probably glomerata growing in a sheltered but not shaded 

 situation. 



Readily separated from any other of the reflexed-vein group by its 

 yellow color and absence of markings above, as well as by the geni- 

 talia. Its place is evidently between reflexus and producta Walk., 

 (given as bilineata in the Synopsis) as in the latter species the second 

 cross nervure is often wanting, in which case the venation is almost 

 identical with Scaphoideus, and althuugh these are unquestionably 

 good Deltocephalus species it would seem to indicate a closer relation- 

 ship for these genera than has been given heretofore. 



Deltocephalus cruciatus n. sp. 



Form of signatifrons nearly, but smaller, smaller than weedi, light- 

 grayish with brown and white markings on vertex, forming a white 

 cross on a brown field. Length, 2.75-3 I'nm.; width, i mm. 



Vertex flat, width at base and length equal, two-thirds longer on 

 middle than next the eye, apex nearly rectangular, margin either side 

 nearly straight. Face longer than wide; front broad, wedge-shaped, 

 twice longer than clypeus, less than twice wider above than below, 

 clypeus large, margins continuous with those of front, genae roundingly 

 angled, broadly margining the lorae below. Pronotum less than half 

 wider than long, equalling the vertex in length, anterior margin broadly 

 curved, posterior margin nearly straight, humeral margins rounding 

 nearly to the eye, elytra moderately long and narrow, equalling or ex- 

 ceeding the abdomen, with an appendix, venation nearly as in signati- 

 frons, outer claval vein with a cross nervure to the suture near the 

 base, central anteapical cell elongate, constricted, but not divided, 

 outer anteapical small or wanting. 



Proc. D. A. N. S., Vol. VII.] lo [January ii, 1898.] 



