KEVISION OF ELEODIINI BLAISDELL, 215 



Two forms are to be recognized, namely : 



Forma typica. — Thorax moderate in width, sides not very strongly 

 rounded; elytral punctuation more or less muricate, disc striato- 

 punctate, interstitial punctures smaller or at most subequal to the 

 strial punctures, and usually not at all indented. 



Forma convexa, — Thorax wider, form more convex, punctuation 

 not at all nuiricate, elytral punctures moderately coarse, the strial 

 closely placed, the interstitial larger or subequal and more or less in- 

 dented, and more or less irregular in some intervals or laterally. 



Measwemcrits. — Males: Length, 22-25 mm.; wadth, 8-10 mm. 

 Females: Length, 22.5-2G mm.; width, 9.5-10 mm. 



Genital characters^ male. — Edeagophore moderate in size and of 

 the usual oblong-ovate form. 



Basale oblong and moderate in length. 



Apicale about twice as long as wide at base, triangular and evenly 

 convex above, wuth a feebly impressed linear depression in middle 

 third; sides very feebly arcuate from base to apex, the latter nar- 

 rowly rounded and obtuse ; base broadly and subacutely lobed at the 

 middle and sinuate laterally. 



Sternite transverse. Each lobe triangular with the external bor- 

 der evenly arcuate from base to apex; internal margin straight; 

 apex subrectangular and narrowly rounded; surface sparsely 

 punctate and setose in apical two-thirds, seta} moderately long and 

 not very dense. Membrane not setose across the bottom of the sinus. 



Female. — Genital segment subquadrato-trapezoidal and moderately 

 setose. 



Valvula (Plate 1, fig. 8). — Dorsal plate oblong, wdth the surface 

 more or less broadly concave, margins more or less reflexed and sub- 

 parallel ; finely and sparsely punctate, setose ; external margin feebly 

 sinuate to slightly arcuate; internal margin arcuate; apical margin 

 subtruncate or feebly rounded, with a few short setae. Angle more or 

 less rounded. Apex short and triangidar, acute at tip and very finely 

 setose. 



Appendage short and depressed, wdder at base than long, broadly 

 rounded at tip, setose, setse rather short forming a loose tuft ; external 

 angle of the fossa fringed with a few quite long setae. 



Submarginal groo\'e small and sometimes visible from above. 



Supei'ior pudendal memhrane reaching to about the middle of the 

 dorsal plate and longitudinal rugulose. 



Ventrolateral surfaces. — Body transversely inflated and with the 

 basal prominences moderate ; quite strongly concave laterally and less 

 so centrally in front of the apices; quite strongly punctate in apical 

 three-fourths, each puncture with a rather short semi-erect hair. 

 Genital fissure moderately narrow. 



