308 [ JUNE, 
Missouri. Dr. Engelmann ; two specimens. From the difference between these 
specimens, the variations in this species must be very great. One has the pos- 
terior angles of the head entirely black, while in the other there are merely in- 
distinct black dots: there are also two black dots between the antenne. The 
neck has a single spot on the middle, instead of two lateral spots as in C. myla- 
brina; the thorax, besides the four spots arranged transversely, has an apical 
spot each side; the disc is transversely concave before the middle; the basal 
spots of the elytra are sometimes confluent ; the medial spot is much larger than 
in C. mylabrina. The under surface is variegated with black and yellow; the 
margin of the segments of the abdomen, and usually the whole of the last seg- 
ment being yellow. Outer spur of the posterior tibiz cylindrical and obliquely 
truncate. 
A specimen from the Creek Boundary, given me by Dr. 8S. W. Woodhouse, 
differs from the two original specimens in having the head unspotted ; the elytra 
more finely and less densely punctured, the postpectus entirely rufous, and the 
feet colored as in C. mylabrina; the head, however, is somewhat quadrate pos- 
teriorly, and the spot on the neck is medial; the middle spot of the elytra is large. 
I have therefore placed the specimen under C. Engelmanni, though it may pos- 
sibly be a distinct species; a much larger series of specimens will be necessary 
to determine the value of the characters above mentioned. 
26. L. Ger mari, capite parce punctato nigro, macula verticali magna flava, 
thorace elongato, flavo nigro biguttato, elytris confertim punctulatis, sutura vit- 
taque lata nec humerum nec apicem attingente nigris; scutello nigro, pedibus 
flavis, genubus tibiarum apice tarsisque nigris. Long. -32—-47. 
Haldeman, Proc. Ac. Nat. Se. 1, 303. 
Pyrota Germarit Le Conte, Journ. Ac. Nat. Sc., New Ser., 1, 91. 
Baltimore and North Carolina; Mr. Haldeman. The black sutural margin is 
dilated anteriorly, and frequently separated from the other portion, forming an 
elongate spot; the vitta is narrowest towards the base; the body beneath is 
black ; the outer spur of the posterior tibia is more obliquely truncate than in 
the two preceding species, so as to become flattened and concave. 
27. E. discoidea, flava, capite punctato, thorace elongato, nigro biguttato, 
apice angustato, elytris subtiliter scabris macula subbasali, vitta utrinque ab- 
breviata, suturaque angustissima nigris, pectore, genubus, tibiarum apice, tarsis 
palpis antennisque nigris. Long. -27—-45. 
One specimen, found on the Platte river by Wm. Tappan, and given to me by 
Prof. Agassiz; several found in Texas by Lieut. Haldeman. Head yellow, con- 
vex, broadly rounded behind, not densely punctured, pilose, with short, erect 
hairs: palpi black. Antenne black, base testaceous ; longer than the head and 
thorax, filiform, less slender than in the preceding species, joints loosely artieu- 
lated, 11th not constricted. Thorax narrower than the head, one half longer 
than wide, narrowed at the apex, transversely impressed before the middle, 
basal margin impressed at the middle, with a few scattered hairs, punctured, 
bright yellowish testaceous, with discoidal round black spots at the middle. 
Scutellum yellow. Elytra yellow, with a small, oblong, black spot near the 
scutel, and a moderately wide, black vitta reaching neither the base nor the 
apex; the extreme sutural margin is also black; the surface is rough, with fine 
wrinkles, scarcely punctured. Postpectus black, abdomen yellow; feet yellow, 
knees, tips of the tibie and tarsi black; posterior tibiz with the outer spur 
cylindrical and obliquely truncate. 
B= —te A 
28. L. puncticollis, nigra, minus dense nigro-pilosa, capite thoraceque 
confertim punctatis, hoc elongato, subcanaliculato, apice angustato, elytris sca- 
bro-punctatis. Long. -36— 45. 
Epicauta puncticollis Mannerheim, Bull. Mosc. 1843, 288: Le Conte, Ann. 
Lyc. 5, 162. 
San Diego and San Francisco, California; abundant. This species differs from 
the next in having the thorax more densely and less coarsely punctured; the an- 
eee 
