1863.] 
321 
der and parallel form, by the presence on the elytra of the basal 
short white vittae, and the shape and position of the other white spots, 
the middle spot of cretata being large, broad, and somewhat elongate, 
emarginate at each end and not confluent with the suture, but forming 
a distinct spot on each elytron ] while Fmji has a median, dorsal, elon¬ 
gate spot, confluent with the suture by which it is divided ; the pos¬ 
terior white spots on the elytra of the latter species are ovate and close 
to the suture, while those of cretata are large, irregular, contracted 
within, and situated as far from the suture as the lateral margin ] and 
by the white color on the sides of the abdomen being broader than in 
cretata which has the lower margin of the white sides deeply indented 
at the anterior part of each segment, giving it a strongly serrate 
appearance. 
The white markings of this species, as well as of cretata^ are com¬ 
posed of appressed hair-like scales. 
I have examined two pairs of this beautiful species (a pair in the 
collection of Dr. Samuel Lewis), both collected by Mr. H. T. Fay, of 
Columbus, Ohio, by whom the species was first discovered, and to whom 
it affords me much pleasure to dedicate it. The Society is indebted to 
Mr. Flenry Ulke, for the fine pair from which the above description is 
taken. 
Acm^ops incertus n. sp. 
Body blackish • anterior margin of the thorax, lateral margins of the 
elytra and the femora, except tips, reddish. 
Hah. Virginia. (Coll. Ent. Soc. Phila.) 
Head black, densely punctured, slightly sericeous; sockets of the 
antennae reddish-yellow; parts of the mouth black. Antennae three- 
fourths as long as the body, somewhat flattened, punctured, blackish, 
brownish towards the tip, rather thickly clothed with pale sericeous 
pubescence; fourth joint shorter than the third, the fifth broader at 
tip than the other joints and as long as the second and third put to¬ 
gether. Thorax blackish, sparsely and finely punctured, densely clothed 
with yellowish pubescence^ narrowed in front, sides angulated; ante¬ 
rior margin prominent, red; disk rather broadly impressed anteriorly 
and having on each side a smooth shining space. Scutellum black, 
punctured and transversely impressed at tip. Elytra twice as wide as 
