32 Mr. F. Smith’s Descriptions of 
Sp. 6. Hyleus cornutus, Kirby’s MSS. (PI. III. fig. 3.) 
Aculeate; black; clypeus bidentate ; a singular prominence 
below the scape of the antenne, which is black ; antennz fulvous 
beneath. Thorax finely punctured ; a white spot on the tegule; 
the base of the anterior and intermediate tibiz pale ; posterior 
tibiae annulated with pale yellow. Wings fuscous, paler at their 
tips. Abdomen very finely punctured. 
Length, 3 lines. 
The remarkable horns which arm the clypeus have doubtless 
their uses, and probably indicate some difference in the habit or 
economy of this species. 
This species is rare; I only know of one specimen in Mr. 
Kirby’s Collection in the Entomological Society's Cabinet, and 
one in my own, which was captured on Cove Common, Hants. 
Sp. 7. Hyleus plantaris, (New species.) 
Male.—Black face, with scattered hairs. Antennz much shorter 
and thicker than in the other males; entirely yellow, slightly stained 
with fulvous above ; scape considerably dilated, with a black streak 
above, fringed with long hairs, particularly on the approximating 
margins ; a smooth shining depression on the face, into which the 
scapule fall. Thorax with a yellow spot on each side of the collar ; 
a white spot on the tegulez ; base of the wings yellow, remainder 
fuscous; anterior tibiae with a yellow stain in front, the interme- 
diate yellow at their base, posterior annulated with yellow ; all 
the tarsi yellow; the intermediate planta dilated at the base in 
front. Abdomen elongate, with longish pale hairs at the extreme 
lateral margins of the segments, particularly the apical ones; on 
the underside a patch of fulvous hair, in the centre of the second 
segment. 
Length, 3 lin. 
Of this species I took two specimens on Cove Common, Hants. 
This I believe to be a new species, and in one respect a re- 
markable insect—viz. the dilatations of the plantz of the inter- 
mediate legs at their base ; the antennz are much shorter than in 
the other males of the genus, they are also proportionably thicker ; 
the scape is considerably dilated, and fringed with long stiffish 
hairs on the margins, which approximate ; there is also a differ- 
ence in the form of the joints of the tarsi; and on the underside 
of the abdomen, on the second segment, is an angular patch of 
short fulvous hairs, somewhat similar to the ¢ of Chelostoma ; 
