AMERICAN COLEOPTERA. 



303 



N. riifipes Linn.— Oval, slightly oblong, piceous, subopaqiie, pubescent, 

 antennae (except club), and legs rufous. Thorax less than twice as wide as 

 long, apex but little narrower than base, sides moderately arcuate, margin 

 narrowly explanate, surface densely and coarsely punctured. Length .14— .16 

 inch : 3.5 — 4 mm. 



This species is closely allied to the preceding but is without elytral 

 spot, of a little more elongate form, the thorax much less narrowed 

 in front and the sides less explanate. 



Introduced from Europe into the Eastern States and Canada. 



N. ziczac Say.— Oblong oval, piceous, subopaque, pubescent, elytra with 

 basal spots and a median sigmoid band testaceous. Head moderately finely 

 not densely punctured. Thorax a little less than twice as wide as long, apex 

 a little narrower than the base, sides feebly arcuate, margin very feebly 

 explanate, surface sparsely and rather finely punctured. Elytra finely not 

 densely punctured. Length .12— .20 inch; 3—5 mm. 



The above characters sufficiently represent the typical form from 

 which we have several variations. 



var. uniguttata Mels.— This is the form in which the median portion of the 

 sigmoid band alone remains. 



var. humeralis Lee— Here the sigmoid band disappears and the juxta- 

 humeral spot alone remains. 



var. inornata.— These are entirely immaculate and of a pale piceous color. 



In the fully colored specimens the pubescence is not uniformly 

 brown as in the preceding species but is intermixed with grey, and 

 the elytral spots are covered with grey pubescence, and a vitta of 

 similar color starts at the humerus and crosses the elytra in frout of 

 the tip. The pubescence is also coarser than in the two preceding. 



The differences between this species and the preceding are so 

 evident as to require no special mention. It will however be noticed 

 that the tarsi are a little less diluted. 



Occurs everywhere in the United States, including the PaciBc 

 Coast and also in Canada. 



STEIilDOTA Erichs. 

 Labrum bilobed. iMaudibles feebly bidentate at apex, the terminal 

 cusp simple not bifid. Antennae with an abrupt club, grooves sub- 

 ocular, moderately deep, parallel. Tarsi dilated. 



The males have an additional segment which varies in distinctness 

 in the species, being nearly as evident in octomaculata as in the males 

 of Epuraea, while in the other two species the segment is quite as 

 feebly developed as in Pheaolia. S. <jeminata % has in addition the 

 middle and posterior tibiae dilated in a manner similar to the posterior 

 tibiae of Epnram luteola. (PI. Ill, fig- 22). 



