Biological Papers. 131 



GENUS OF KCEBELID^. 

 Front three times as long as its width between the antennae. Lorje not enclosed below by the 

 margin of the cheek Kcebelia ( Plate II, figs. 8 and 9.) 



GENUS OF PAROPIDjE, 

 Each ocellus set in a broad, deep, oblique groove Paripulopa 



GENERA OF BYTHOSCOPID^. 

 A. Pronotum without a lateral carina. Side margin of pronotum very short or absent. 



B. Pronotum strongly, subangularly produced between the eyes. Extreme tip of 

 elytron at or below the center of elytron. Venation clean-out, elevated. 



C. Vertex rounded rectangular. Indefinite striations of pronotum extend- 

 ing diagonally backward each side of the median line Pediopsis 



CC. Vertex rounded, angle greater than a right angle. Indefinite striations 

 of pronotum usually transverse Bythoscopus 



BB. Pronotum rarely subangularly produced between the eyes (sometimes so in 

 AgcUlia). Vertex transverse, obtusely angled, often parallel margined. Elytral 

 veins not elevated. 



C. Elytra not overlapping at apex (appendix not developed). Clypeus usu- 

 ally parallel margined. Extreme tip of elytron above center of elytron. 



® Agallia 



CC. Elytra overlapping at apex (appendix strongly developed). Clypeus ex- 

 panded at apex Idiocerus 



AA. Pronotum with a distinct lateral carina and comparatively long side margin; flaring be- 

 hind; anterior margin broadly, gently, curved. Elytra more or less punctured, usually 

 pubescent or hairy. 



B. Pronotum not wider behind than the head. Clypeus strongly tapering. Front 

 not wider than the clypeus at the suture Straganiovsis 



BB. Pronotum wider posteriorly than the head. Clypeus parallel margined. Front 

 distinctly wider than the clypeus at the suture Macropsis 



GENERA OF TETTIGONIELLID^. 

 A. Lateral carina of pronotum (arising back of center of eye) present; strongly obliquely 

 ascending to the posterior angle of pronotum. Root of elytron, viewed from the side^ 

 higher than the eye. 



B. Margin of vertex above antennal pit, viewed from above, not emarginate in front 

 of eye; not exposing any basal joints of the antennae. Clypeus as long as broad 

 and widest beyond the base. 



C. Profile of vertex rounding on to the front, from which it is not distinctly 

 separated. Elytra subcoriaceous, membraneous only at tip. . Oncomeiopia 



CC. Profile of vertex flat and distinctly separated from the front. Elytra 

 usually more or less vitreous throughout Homalodieca. 



BB. Margin of vertex above antennal pit, viewed from above, emarginate in front of 

 eye; exposing one or more basal joints of the antennae. Clypeus broader than 

 long and widest at base Aulacizes 



AA. Lateral carina of pronotum gently ascending, subhorizontal, or absent. Root of elytron, 

 viewed from the side, not higher than the eye. 



B. Posterior margin of pronotum long; the margin straight, or broadly gently, 

 emarginate. 



C. Elytra not reticulate veined at apex and not punctate. Lateral carina 

 usually present on pronotum. 



2. Kirkaldy (Bull. 3. Hawaiian Sugar Planters' Ass., pp. 30-31; 1907) has divided the genus 

 ^Oo//ia into three genera, Aceratagallia, Agalliopsis, and Agallia, representing groups AA.. 

 A. BB.. and A. B., respectively, of Osborn and Ball's synopsis of Agallia (Proc. Dav. Acad. 

 Sci., V. 7, pp. 47-48, 1898). These have not been included here, as the groups do not seem to 

 have more than subgeneric value. 



