I20 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
Ontario: "E. Ont." (Ent. Branch). 
Wisconsin: Dane Co., April (Marshall). 
Indiana: Lake Co., May (Blatchley); Pine, May (Wolcott). 
Illinois: "111." in several collections. 
Minnesota: Lake Itasca, June (Graham in coll. Univ. Minn,). 
Dakota: "Dak." (Hubbard and Schwarz coll.). 
This species is reported by Prof. Blatchley to occur on water lilies. 
The unusually long elytra, pubescent prothorax, unarmed posterior 
femora, long antennal joints and tarsi will separate this species from 
any of the North American Donacias. 
It is closely related to the European clavipes. The form of head, 
antennae, prothorax, elytra and legs are almost the same as in the 
European species except that the latter is more brightly colored with 
prothorax not pubescent but shining and more or less transversely 
strigate. 
Subgenus Poecilocera Schaeffer. 
Only one species is referable here which differs more from the true 
Donacias than it does from the species of the subgenus Plateumaris. 
From the species of the latter subgenus it differs principally by the head 
gradually narrowing behind the eyes and not visibly constricted, absence 
of tempora, elytral apices truncate or emarginate, different armature ©f 
hind femora and tibiae and vaginal plates of female similar to those of 
the subgenus Donacia. 
DoNACiA HARRisi Leconte. 
Plate V, figs. 3 and 16. 
Elongate, feebly depressed; color dark aeneous or cupreous above, 
very rarely metallic green or blue; antennae entirely rufous, sometimes 
annulate or almost entirely dark metallic; legs rufous, femora in about 
apical half or more metallic; body below entirely metallic, occasionally 
abdomen reddish with or without slight metallic tint. 
Head very feebly narrowed and not constricted behind, eyes small 
and scarcely prominent; median line fine and deep; ocular orbits 
absent; posterior tubercles absent; surface densely and moderately 
finely punctate; antennae extending slightly beyond the middle of 
elytra in the male, shorter in the female, third joint very long, longer 
than the fourth joint. 
Prothorax usually as wide at apex as long; sides more or less dis- 
tinctly converging behind the lateral tubercle; anterior angles distinct, 
