260 PROCEEDINGS OF THE ACADEMY OF [April, 



in sleighti this emargination is extremely deep and has the sides 

 concave with angle not acute, but rather narrowly rounded, the 

 lateral productions thus formed have sharply acute apices, which, 

 however, are situated on their outer margins, due to the convexity of 

 their inner margins; in davisi the emargination is not quite as deep 

 as in sleighti, with the sides convex and angle very broadly rounded, 

 the lateral productions formed by this emargination have evenly 

 converging sides with blunt and sharply rounded apex situated mesad. 

 The supra-anal plate in the other species of the genus, with distal 

 margin very broadly and shallowly concave, is very distinct. 



Type: cf ; Billy's Island, Okeefenokee Swamp, Georgia. September 

 1-5, 1913. (J. C. Bradley.) [Hebard Collection, Type No. 156.] 



Description of Type. — -Size large for the genus, form robust, but 

 not as decidedly robust as in sabalis and sleighti. Head in form 

 much as in those species, but with ventral portion not as broad; not 

 immaculate as in those species, but agreeing with the other species 

 of the genus in having the ventral margin of the face above the 

 clypeus broadly banded with black, and with the base of the antennae 

 margined ventrad, and the dorsal surface of the fastigium of the 

 vertex lined laterad, with the same color. Antennae with proximal 

 joints marked with black, these markings becoming fainter distad 

 and disappearing at the end of the proximal third. Pronotum with 

 dorsum more constricted than in sabalis and sleighti and striped 

 latero-dorsad with black. Tegmina as in those species. Supra-anal 

 plate deeply emarginate mesad with sides convex and angle broadly 

 rounded, the lateral productions formed by this emargination having 

 evenly converging sides, but with apex blunt and sharply rounded. 

 Cerci and subgenital plate as in sabalis and sleighti, limbs and arma- 

 ment of the same similar, but decidedly less robust; unlike in those 

 species the limbs are marked with fine black punctae on the more 

 exposed surfaces. 



Allotype: 9 ; Same data as the type, but taken on December 28, 

 1913. [Hebard Collection.] 



Description of Allotype. — Size somewhat larger than type, form 

 similar. Head broader, more inflated than in females of subapterus: 

 antennae similar. Pronotum more inflated than in type, but, as in 

 the other species of the genus, the latero -dorsal stripes are in this 

 sex no further separated caudad than cephalad. Tegmina very 

 small and pad-like and wings not visible, as in females of the other 

 species of the genus. Supra-anal plate triangularly produced with 

 sides concave and apex acute. Ovipositor slightly shorter than 



