Dec, 1919.] Shaeffer: Notes on Chrysomelid.e. 311 



and dull and nearly as long as wide and the elytra are very shining in 

 both sexes; the posterior femora of the male are moderately clavate 

 and extending beyond the apex of elytra, in the female to the apex of 

 the fourth ventral segment. The mesosternal process is longer and 

 more parallel than in rufescens and the last ventral is feebly sinuate- 

 truncate at apex. 



Donacia texana Cr. is possibly also a good species and not a syn- 

 onym of hypolcuca if my identification of a specimen from New 

 Braunfels, Texas, as that species is correct. The third antennal joint 

 in this specimen is decidedly shorter than in hypoleuca the prothorax 

 shorter and more transverse with the posterior angles less prominent, 

 the posterior femora strongly clavate and the legs and antennae dark. 

 This specimen, a male, looks superficially much like palmata and has 

 the prothorax in form and sculpture very similar to that species but 

 the posterior femora are longer, armed with a single, acute tooth and 

 the first joint of anterior tarsi is not dilated. 



Donacia parvidens new species. 



Female. — Moderately elongate and slightly more robust than cincticornis. 

 Head and prothorax coppery bronze, elytra castaneous, shining with a more 

 or less distinct bluish tint; underside paler than the elytra and clothed densely 

 with short, silvery pubescence ; antennae black or piceous ; all the femora pale 

 but more or less blackish above, tibiae more or less blackish on outside. Head 

 feebly shining, closely punctate with moderate punctures, median line deeply 

 impressed; antennae moderate reaching back to about the middle of elytra, 

 third joint shorter than first but distinctly longer than the second, fourth 

 about as long as the first. Prothorax subquadrate, anterior angles distinct but 

 scarcely prominent, posterior angles moderately prominent, lateral tubercles 

 obsolete, lateral margin not narrowing from apex to about basal fourth, then 

 rather strongly convergent to base, sides moderately constricted at middle; 

 surface feebly shining, finely alutaceous, rather sparsely punctate with fine 

 punctures ; median line distinctly and moderately deeply impressed from apex 

 to base, near the latter a shallow, broad depression. Elytra depressed, a little 

 more than twice as long as wide at base ; surface shining, punctures of the 

 regular rows moderately large, intervals subconvex and scarcely strigose ; apex 

 truncate or subtruncate. Mesosternal process about a9 wide as long between 

 the coxae; posterior femora rather short, though slender, reaching to or a little 

 beyond the apex of the second ventral segment, feebly clavate and armed below 

 with a feeble tooth. Length 8.5 mm. 



Male. — As usual with slightly longer posterior femora, the tooth a little 

 longer, slightly longer antennal joints, prothorax a little more shining and 

 scarcely alutaceous and mesosternal process a little narrower. 



