368 Mr. H. W. Bates on the Longicorn Coleoptera 
Genus Lycrpoia, Thomson. 
Thomson, Systema Cerambye. p. 125. 
The proposer of this genus has omitted to state the essential 
characters which distinguish it from Spathoptera and Hemilophus. 
These are furnished by the peculiar width of the sterna, especi- 
ally of the prosternum, which is as broad as, or a little broader 
than, the mesosternum. The prosternum in Spathoptera is 
much narrower than the metasternum, and in Hemilophus it is 
reduced to a mere thread, almost concealed by the large coxe. 
Lycidola is moreover distinguished from Spathoptera by the 
dilatation of the elytra commencing almost from the shoulders, . 
by the breadth and shortness of the head, and the transverse 
thorax. The genus is founded on Saperda palliata, Klug (En- 
tom. Bras. Specimen alterum, pl. 42. f. 11). 
Lycidola simulatriz, n. sp. 
L. nigra, breviter setosa; capite et thorace vitta laterali communi 
fulva; elytris apud medium fascia alba diaphana, apice singulatim 
rotundatis ; femoribus basi flavo-testaceis. Long. 5—6 lin. 
Head short and broad, the face extending a short distance 
below the eyes, and not dilated ; black, face reddish ; occiput on 
each side with an oblique fulvous stripe. Antenne black ; third 
joint one-fourth longer than the fourth, cylindrical; the fourth 
a little dilated ; both densely hairy ; the remaining joints shorter 
than the third and fourth taken together, and sparingly setose. 
Thorax considerably broader than long, coarsely punctured, ex- 
cept on the disk, which is smooth, deep black; sides each with 
afulvous stripe. Scutellum black. Elytra dilated almost from 
the shoulders, and quite abruptly, at the apex singly rounded ; 
disk punctured, and having on each three longitudinal carine, 
the two outer of which are united before the apex, and the inner 
one abbreviated ; expanded sides shagreened and traversed by a 
flexuous carina; colour wholly deep black with a violet tinge, 
except a white diaphanous belt across the middle, interrupted at 
the suture. Body beneath and legs black ; basal part of thighs 
testaceous yellow. 
Var. Base of each elytron with a small fulvous spot in con- 
tinuation of the thoracic stripe; lateral edge of the elytron also 
fulvous near the base (approaching L. palliata, Klug). Tapajos. 
The typical form not uncommon at Ega, on leaves. The var. 
found only on the banks of the Tapajos. 
Genus SpatHorrTeRA, Serville. 
Serville, Ann. Soe. Ent. Fr. 1835, p. 50. 
Body elongated, dilated behind; facies of the genus Lycus. 
