DIADITUS. 189 
Antenne shorter, with joint 1 shorter than the head, 2 about one-fourth longer 
than 1 and clothed with short projecting hairs (¢); frontal spines stout, 
blunt at the tip; eyes smaller; anterior tarsi with joints 2 and 3 almost 
fused intoone . 2. 1. 1 2 ee ew we ew we ew ww  ptctipes, 1. Sp. 
1. Diaditus hirticornis, n. sp. (Tab. XI. fig. 20, ¢ .) 
3. Elongate-obovate, greyish-ochreous, the head and antenne in great part fuscous; the pronotum with two 
lines along the middle, connected anteriorly, and the scutellum with a narrow stripe on each side, black ; 
the elytra with the inner margin opposite the apex of the scutellum, a large subtriangular patch on the 
discoidal area, a small oblong spot in the cell in front of it, an elongate patch, deeply excised in front, on 
the outer cell of the membrane, and a small spot at its hase, velvety brownish-black, the rest of the 
membrane slightly mottled with fuscous; the legs flavous, the tarsi and hind femora (the extreme base 
excepted) fuscous, the anterior and intermediate femora mottled with fuscows (except at the base), and 
the anterior and intermediate tibie with the base and apex and an annulus near the middle similarly 
coloured; the connexivum slightly mottled with fuscous; the body beneath ochraceous, the pleura in 
great part and a stripe down each side of the venter, as well as the rostrum, nigro-fuscous; the body 
sparsely clothed with very short scale-like hairs, the legs with bristly hairs; the antenne with joint 1 
finely pubescent, 2 with long bristly hairs all round, and 3 and 4 with much shorter and finer hairs, Head 
with large and prominent ocelli, which are placed on a transverse raised prominence; eyes coarsely 
faceted, very large, prominent, and rounded ; frontal spines (jugs) rather slender, divergent, and some- 
what pointed at the tip; antenne with joint 1 almost as long as the head, 2 comparatively stout, about 
one-half longer than 1, 3 and 4 very slender, 4 a little longer than 3. Pronotum rapidly narrowing from 
the base forwards, as long as broad, with two posteriorly diverging carinz on the disc, the hind angles 
obtuse and slightly raised, the anterior angles produced into a short tooth. Elytra nearly reaching the 
apex of the abdomen. Abdomen gradually narrowing from about the middle, rounded at the sides ; 
the sixth segment at the apex somewhat obliquely truncated on each side and feebly emarginate in the 
centre. Prosternal spines short. Anterior tarsi distinctly 3-jointed. 
Length 9, breadth 23 millim. 
Hab. Panama, Bugaba (Champion). 
One specimen. Smaller than D. semicolon, Stal, with longer and more slender juge, 
less prominent eyes, less acute anterior angles to the pronotum, &c. 
9. Diaditus pictipes, n. sp. (Tab. XI. fig. 21, ¢.) 
Very like D. hirticornis and similarly coloured, but sometimes with the head and the basal joint of the antenns 
paler; the pronotum with the median space between the two carine usually infnscate ; the femora and 
tarsi more or less fuscous; the tibice flavous, each with the base and apex fuscous or blackish, the anterior 
and intermediate pairs with a fuscous ring about the middle, that on the intermediate pair sometimes 
obsolete ; the antenne with joints 2-4 clothed with short fine projecting hairs. Head with the ocelli in 
the male moderately large and placed on a slightly raised prominence, smaller in the female; eyes 
moderately large in the male, smaller in the female, transverse if viewed laterally; frontal spines stout, 
approximate, blunt at the tip; antennz with joint 1 considerably shorter than the head, 2 rather slender, 
about one-fourth longer than 1, 3 and 4 very slender, 4 slightly longer than 3. Pronotum as in 
D. hirticornis. Abdomen with the sixth dorsal segment slightly emarginate in the centre at the apex 
in the male and rounded in the female; the female with two genital segments visible from above—the 
first broad, declivous, and trapezoidal in shape, the second short and strongly transverse. Prosternal 
spines short, Anterior tarsi with the second and third joints almost fused into one. 
Length 8-83, breadth 23-2, millim. (d 2.) 
Hab. Mexico, Teapa in Tabasco (H. H. Smith: ¢ 2); Guatemana, Duefias 
(Champion: ¢ ). 
