8o 
BULLETIN 94. 
Nomatia (Xanthidium) psrivincta, new species. 
A $ marked Colorado, without definite locality. 
Length 10L mm.; ground-color of head and thorax black; labrum 
yellow, with a small reddish spine; mandibles pale ferruginous, with 
black tips; face below antennae yellow; the upper part of clypeus, and 
upper part of supraclypeal area, ferruginous; front with ferruginous 
bands continued from the lateral face marks, strongly curving inwards; 
a red spot before middle ocellus; posterior orbital margins rather broad¬ 
ly red; scape ferruginous behind, bright yellow in front; flagellum ferru¬ 
ginous, the last six joints strongly blackened, the extreme apex red; 
fourth antennal joint much longer than third; mesothorax very coarsely 
and densely rugoso-punctate, its lateral margins yellow edged with fer¬ 
ruginous; upper border of prothorax, tubercles, scutellum, a spot at 
each anterior corner, postscutellum, and large quadrate marks on meta¬ 
thorax encroaching on enclosure, all bright yellow; pleura yellow, with 
a small black and red mark above, and a large black mark surrounded 
by red below; legs a lively red; hind coxae with a large black markbehind 
and a yellow one above; anterior femora yellow in front and apically, 
middle fomora with less yellow in front, but a large mark at apex,, hind 
femora with a yellow stripe in front and a large black area behind; tibiae 
yellow on outer side, hind tibiae with a black stripe behind; basal joint 
of hind tarsi mainly yellow; tegulae shining and sparsely punctured, 
ferruginous with a yellow spot in front; wings rather yellowish, apex 
clouded; stigma bright ferruginous, nervures brown; second submarginal 
cell very broad above, not far from square, receiving the recurrent ner- 
vure well beyond its middle; third a little broader below than second,but 
very greatly narrowed above, its outer margin strongly angled;basal ner- 
vure meeting transverso-medial; abdomen minutely rugulose, bright yel¬ 
low, with the base of first segment, and three broad bands at the junc¬ 
tion of the segments, black; hind margin of fourth segment reddish 
brown, fifth all yellow; venter yellow (reddish on sides of first segment) 
with three black bands on which are reddish stripes. 
N. perivincta differs from N. vincta by the considerably larger punc¬ 
tures of the mesothorax, the color of the hind legs, the yellow of meta¬ 
thorax intruding on enclosure, the proportions of the antennal joints, 
etc. From N. citrina it differs by the narrower face, the broad third 
submarginal cell, etc. From N. citrina v. rnfula by the narrower face, 
the blackened apical part of flagellum, etc. From N. rhodoxantha by the 
yellow scutellum, color of legs, etc. From N. sulphurata by the much 
narrower first segment of abdomen, broad third submarginal cell, etc. 
From N. rivalis by the markings of thorax and legs, etc. 
Nornada psri/insla variety samirufula, new variety. 
A $ marked Colorado, without definite locality. 
Mesothorax mainly dark red,with a broad median black band, 
and a good deal of black 011 the anterior and posterior margins; an¬ 
terior lateral corners only yellow. Lower part of pleura with a large 
red patch without black; yellow marks on metathorax margined 
with red; first abdominal segment considerably broader, its basal 
hal fired with a blackish transverse band;_ venter with black bands 
only on the first and extreme base of fourth segments. This re¬ 
sembles A 7 ! sulphurata in the darkened apical part of flagellum, etc., 
but the first abdominal segment though broader than in the type, 
is by no means so broad as in sulphurata , while the colors of the 
mesothorax and ventral surface of abdomen, and the shape of the 
third submarginal cell, are quite different. The basal nervure in 
