74 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
towards apex, which is more or less rounded; posterior femora as in 
the male but slightly shorter, extending to the apices of elytra or very 
nearly so. 
Michigan: Ann Arbor, August (Univ. Mich.). 
Illinois: Henry, August (Knab coll.). 
Nebraska: Cedar Blufifs (Bruner, Nat. Mus.). 
Kansas: Ottawa, August (Brown ex Frost). 
Texas: Columbus (Schwarz). 
Missouri: "Missouri" (Lacordaire) ; Perouque, July (McAtee) ; St. 
Louis Co., July (Bock ex Liebeck). 
Ohio: Mt. Vernon, July (Akerlind in coll. Liljeblad). 
Tennessee: Reelfort Lake, Samburg and Walnutlog, July (McAtee). 
Louisiana: "Louisiana" (Lacordaire); New Orleans (Liebeck and Knab 
coll.). 
District of Columbia: Washington (Blanchard coll.). 
New Jersey: Five Mile Beach, July (Wenzel). 
In the majority of specimens the prothorax is gradually converging 
from base to apex, in a very few as wide at apex as at base. The emargi- 
nation of the last ventral segment at apex of the female is rather rare, 
rufescens being the only other species in which it occurs in the female 
and as in that species is often faint in some specimens. The size, the 
rather long hind femora armed below with a single tooth and the finely 
rugose prothorax with scarcely any punctures separates this from all 
other related species except texana. This latter has a smaller head, 
including the eyes, which are less prominent, a wider neck, different 
prothorax, which is strongly transverse, and the front tarsi of the male 
are normal. 
DoNACiA RUFESCENS Lacordairc. 
Small, elongate; color of upper surface usually yellowish-testaceous 
with or without golden tint in the male, head often darker, females 
generally blue or bluish green, frequently entirely pale, dull; antennae 
pale, joints at apex more or less black ; legs pale, all or only the posterior 
femora more or less black. 
Head moderately constricted behind the eyes, which are large; 
densely and moderately finely punctate; median line deeply impressed; 
antennae extending to or beyond middle of elytra, third joint longer 
than first and nearly equal to the fourth joint. 
Prothorax a little wider than long; not or slightly converging 
towards base; sides feebly sinuate; anterior angles distinct, not promi- 
