NORTH AMERICAN COLEOPTERA. 
199 
slightly widened at the apex, opaque, striate from the base, punctured and thinly 
pubescent. Antennae long and slender; first joint of funicle long, clavate, second 
joint slender and longer than the third, outer joints scarcely wider; club very 
elongate, loosely articulate ; joints, except the last, of about equal length; the 
verticillate hairs are less marked than in any other species. Eyes large, round 
and convex. Head wide, densely scaly with a Y-shaped line of pale scales; 
frontal fovea linear, superficial. Prothorax almost twice as wide at the middle 
as long; strongly narrowed in front and constricted at the apex; base emar- 
ginate each side, regularly and strongly rounded on the sides ; surface densely and 
<-oarsely punctured, each puncture bearing a squamiform hair, a narrow median 
line of whitish scales. Elytra suddenly and one-third wider at the base than the 
prothorax, and about one-half longer than wide, feebly narrowed from the base 
for two-thirds their length, thence rapidly rounded to the apex ; strongly convex ; 
striae wide, impressed . punctures moderately large, transverse and closely placed, 
more or less concealed by the scales ; interspaces .strongly convex, an acute tubercle 
near the base of the third interspace, a feeble tul)erosity on the same and another 
more strongly developed one on the fifth interspace and situated on the summit of 
the declivity; the predominant color of the scales is fulvous, variegated with 
spots of darker and paler scales, an anterior oblique and posterior subtransverse 
line of white scales; scutel and intra-humeral spot white; the first and second 
ventral .segments are only moderately long, segments 3-5 subequal. Legs stout, 
thinly clothed with sparse pubescence; femora strongly clavate, infuscate about 
the middle, all armed with a strong, broadly triangular tooth and emarginate 
near the extremity ; tibise rather slender, anterior and middle strongly bisinuate 
along the inner margin with a large triangular tooth about two-fifths their length 
from the base ; posterior tibite feebly hi-emarainate, not toothed ; tarsi slender, 
claws w'ith a rather short, but robust tooth. Long. 2.5 — 3.2 mm. ; .10 — .13 inch. 
Hab . — Florida (Key West; Biscayne) ; coll, of Dr. Horn and E. 
A. Schwarz. 
The toothed tibire distinguish this species from the preceding, and 
in this respect agrees only with A. elegans., from which it is sufficiently 
distinguished otherwise. 
A specimen in Mr. Schwarz’s collection has the elytra more uni- 
formly whitish, with a few darker spots ; the alternate interspaces 
are a tritle more convex, and the tuberosities on the summit of the 
elytral declivity are obsolete. I do not consider it specifically dis- 
tinct. 
Subgenus Paranthonomus. 
This subgenus, which has for its type A. profundus Lee., is readily 
recognized by the deej), longitudinal excavation of the pygidium. 
Beak cylindrical, rather slender and punctured ; scrobes comiuen- 
cing one-fifth ( S ) or one-third ( 9 ) from the buccal o|>ening, straight, 
<leep and attaining the middle of the eyes ; the latter are round, con- 
vex. Head conical, punctured; front foveate ; antennre slender, in- 
serted less than one-quarter ( S ) or one-third ( 9 ) from the apex ; 
