79 
presence of a velvety pilosity, is observable in the centre of each ely- 
tron; every part of the body is more or less thickly beset with a grey 
 pilosity. 
Y PF headde Abeta exactly resembling the male, but the prothoracic 
disk is not darker than the elytra, and there is no silvery mark in 
their centre. 
In both sexes the carination of the elytra follows that of D. ma- 
culicollis, but is less pronounced. 
Compared with D. maculicollis both sexes of this species are of 
smaller size, and the discrepancy in breadth is rather more obvious 
than in length; the antennz of the males are very similar, but the 
apical joint is more clavate in per ; their colour is decidedly different, 
in maculicollis being black, in par testaceous, with the apices of the 
ramuli slightly darker ; the prothorax is more rounded at the sides in 
per than in the older species ; but the plaimness and purity of colour 
in par are sufficient at once to distinguish it. 
Male and female in the cabinet of Mr. Scott, to whom I am in- 
debted for the opportunity of describing it. 
3. Disticuocera Kireyt. 
Mas. Caput nigrum, longitudinaliter sulcatum, antenne dimidio 
corporis longiores, 11-articulate, articulis 3-10 biramosis, 11o 
sesquialtero: prothorax niger vittis 2 latis fulvis, dorso inequa- 
lis lateribus medio \-dentatus : scutellum nigrum : elytra fulva, 
5-earinata, apice dehiscentia, singulo truncato, truncaturd bi- 
sinuatd : pedes nigri. 
Corp. long. 1°15 unc.; elytrorum lat. max. *3 unc. 
Fem. Caput nigrum, longitudinaliter suleatum, antenne dimidio 
corporis viz longiores, 11-articulate articulis 4-8 apice emar- 
ginatis: prothorax niger vittis 2 latis fulvis, lateribus medio 
1-dentatus: scutellum nigrum lateribus fulvum : elytra fulva 
5-carinata apice dehiscentia, singulo truncato, truncaturd bi- 
sinuatd, pedes nigri. 
Corp. long. 1°25 unc.; elytrorum lat. max. °375 unc. 
Male.—Head black, with the exception of a scarcely perceptible 
fulvescent tinge on the short velvety down of the epicranium ; a deep 
epicranial longitudinal sulcus extends forwards between the antenne : 
eyes arcuate, reniform, pitchy black, large, approaching on the epi- 
cranium, dilated and gibbose on the cheeks: antenne more than 
half the length of the body, 11-jointed ; the first joint rather short, 
stout, somewhat in the common shape of a reversed cone; the second 
joint very short ; the following, to the tenth inclusive, short, some- 
what cup-shaped towards the base, and emitting at the apex two long 
branches, which are slightly incrassated externally ; the eleventh 
joint is much longer than either, slender towards the base, somewhat 
club-shaped and very decidedly sesquialterous: prothorax uneven on 
the back, somewhat restricted just behind the anterior margin ; lateral 
margins produced in the middle into a decided strong but obtuse tooth ; 
the posterior half of each lateral margin concave, yet the anterior and 
posterior margins are straight and nearly equal in breadth ; the colour 
