OSBORN AND BALL STUDIES OF NORTH AMERICAN JASSOIDEA. 83 



LONATURA n. g. 



Head conical, slightlv obtuse, more than three times wider across 

 e\ es than length on the middle of vertex, curvature of posterior mar- 

 gin about one-half that of anterior. Front two and one-half times 

 wider than on clypeus, width and length about equal, civ pens broad, 

 parallel-margined, thorax l)road, distinctly angled within, genae rather 

 narrow, roundingly angled, extending very narrowly below lorae to 

 clypeus. Pronotum scarcely as long as vertex, nearly truncate behind, 

 humeral margin straight, nearly meeting the eye, which curves around 

 the lateral margin. Abdomen normal in form, ovipositor very long 

 in female, extending beyond the pygofers, occurs in two forms; ma- 

 cropterous with fully developed elytra and wings reaching well be- 

 yond the abdomen. Elytra long and narrow, the costal margin nearly 

 straight, appendix large, venation obscure, veins on clavus nearly par- 

 allel, united by a cross -nervure, the two branches of the outer sector 

 again uniting after the forking of the inner branch and then forming 

 only two anteapical cells, of which the outer is the larger, inner three 

 apical cells greatly elongate, as long as the anteapicals, outer two on 

 the costal margin smaller; in this form the scutellum is very lar;-;e and 

 strong. Brachypterous form in which the elytra only cover the sec- 

 ond abdominal segment and the wings are rudimentarv, the elytra are 

 twice wider than long, broadest at the apex, venation obscure, the 

 inner branch of the outer sector forking again before the apex, form- 

 ing a single closed cell. In this form the pronotum covers the base 

 of the elytra and most of the scutellum. 



LoNATURA c.^TALiNA n. sp. (Plate IV., Fig. 2.) 



Form and general appearance oi mimita V. D. nearly, occurs in two 

 short and one long- winged forms. Length of body, ?, 2.25 mm.; 

 d^, 1.85 mm.; width .9 mm. Length of macropterous form, 2.75 mm. 



Macropterous form. ?, vertex convex, the anterior margin round- 

 ing to the front, breadth at base and length about equal, over half 

 longer on middle than next eyes, whole surface coarsely granulose, 

 front very broad, transversely convex, sides rounding, rapidly narrow- 

 ing just before the clypeus, clypeus parallel -margined, nearly half the 

 length of the front, lor^e subovate angled internall}-, genje narrow, 

 angles rounding. Pronotum scarcely as long as the vertex, half its 

 length included in the curvature of the anterior margin, posterior mar- 

 gin shallowly emarginate, humeral margin scarcely oblique, disc pos- 



