REVISION OF ELEODIINI BLAISDELL. 47 



Female. — Body quite robust. Elytra rather In'oadly oval, rounded 

 and more or less arcuately and vertically declivous posteriorly. Ab- 

 domen horizontal, evenly and rather strongly convex. Anterior 

 spurs of the anterior tibiae distinctly the stouter, more gradually 

 narrowing from base to apex and about a third longer than the 

 posterior. First joint of the anterior tarsi transversely clothed with 

 ordinary spinules on thickened tip beneath. 



The material before me and referred to the present species is quite 

 variable and presents a number of incipient races, of which three 

 may be recognized to aid in the placing of specimens : 



Forma glabra. — Smooth and shining. Elytral punctures fine and 

 not impressed, with a tendency to some irregularity on the disc, in- 

 tervals flat. 



Forma typica. — Elytra with rows of rather large, impressed and 

 distinctly defined punctures, intervals flat. 



Forma interstitialis. — Elytra with very strongly impressed punc- 

 tures, intervals feebly couacx. 



The above forms or incipient races are connected by an abundance 

 of mesotypes and when j)roperly arranged make an instructive 

 morphological series. 



Measurements. — Males: Length, 15.8-18 mm.; width, 5.5-6.5 mm. 

 Females: Length, lT-20.5 mm.; width, 7.8-9 mm. 



Genital characters., nutle. — Edeagophore rather elongate, fusiform, 

 somewhat strongly arched and well chitinized. 



Basale oblong, rather strongly convex and more or less gibbous 

 basally ; sides evenly and rather moderately arcuate. 



ApicaJe triangular and feebly elongate; surface evenly convex, 

 with a median longitudinal groove extending from near the apex to 

 near the base, membranous in apical half, linear towards base; sides 

 broadly and very feebly sinuate at middle third, apex subacute : base 

 broadly and arcuately lol)ed at middle, very feebly sinuate laterally. 



Sternite parabolic in outline and slightly transverse. Each lobe 

 with the external border more or less evenly arcuate, apex more or 

 less evenly rounded, angle feebly evident at times; internal border 

 short; surface rather evenly convex and glabrous, quite coarsely and 

 densely punctate apically, more sparsely so towards base, setose, setae 

 moderate in length, longer about apex, and not very dense. 



Sinus short, with the membrane very sparsely setose at bottom. 



Female. — Genital segment quadrato-trapezoidal, somewhat de- 

 pressed and setose. 



Yalvvla (Plate 3, fig. 16). — Dorsal plate oblong, sometimes slightly 

 widened at base, frequently deflexed apically, gradually explanate 

 externally from basal third to apical margin with which it is dii'ectly 

 continuous; surface plane, finely to rather coarsely and sparsely 

 punctate, setose, setae rather short ; external border feebly sinuous to 



