448 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
whole pronotum except a narrow median band from lower mar- 
gin to lower margin, tegulae, the upper margin of the meso-ep- 
imeron, a narrow or broad and sometimes angulated band on the 
whole or nearly the whole length of the meso-episternum, pectus 
from posterior half to entirely (the black between the yellow on the 
pectus and the meso-episternum is often faded or not fully devel- 
oped so that the two are entirelj^ yellow except for the upper 
anterior portion of the latter along the meso-epimeron), the 
post-tergite often from slightly to entirely, the upper margin of 
the meta-epimcron (sometimes very broadly), meta-episternum 
entirely or almost entirely, and usually the meta-postscutellum 
from in part to entirely. Mesoscutellum slightly convex, some- 
times moderately; meso-episternum rather blunt, often mod- 
erately pointed. 
Abdomen. — Ferruginous, sometimes quite- pale, and some- 
times again quite dull; the basal tergum, the second from small 
anterior portion to almost entirely, and sometimes the two apical 
segments, blackish or black; the sides of the basal tergum, and 
usually the posterior margin, yellowish. 
Legs. — From pale to dull ferruginous; the following parts 
yellowish: coxae except a broad longitudinal black band on the 
intermediate and posterior (rarely the black on latter more exten- 
sive), trochanters except more or less black above, anterior 
femora before or entirely and a longitudinal black band above 
(more rarely black behind), the intermediate femora very often 
before, and quite often the anterior tibiae and tarsi before; the 
following additional parts black : a longitudinal black band on the 
intermediate and posterior femora above (rarely interrupted on 
the former and quite often, and usually widely, on the latter, so 
that it is indicated only bj^ an elongate spot at the base and apex), 
often a longitudinal line on the anterior and intermediate tibiae 
above, posterior tibiae as a rule from slighth^ at apex to apical half 
(rarely entirely blackish) , rarely the basal segments of the anterior 
and intermediate tarsi above, and usually the posterior tarsi ex- 
cept the apical segment. 
Wings. — Fore wings hyaline or faintly clouded, apical half 
sometimes strongly clouded, and rarely entirely pale honey- 
yellow; costa basal to stigma in part or entirely black sometimes, 
