258 
HYLESINUS (?) SP. 
THE BLACK HYLESINUS. 
Plate XVI, fig. 3 a, b. 
Reference :—Provisionally named as Hylesinus (7) sp. 
Classification :—Order, COLEOPTERA. Family, Scolytide. 
Sub-Family, Hylesini. 
Tree attacked :—Prnus excelsa (Blue Pine). 
Description. 
Beetle.—Cylindrical, black, shining, with head ,and thorax 
pitted and elytra striated and pitted. Head short, vertical, with 
a very short rostrum as wide as head, Antenne brown, scape 
thickens anteriorly into a knob; funiculus of 7 joints, r and 2 
long, the first longest and thickest, 3 to 7 short and increasing 
in width upwards: club nearly as long as funiculus, articulated, 
oblong, and yellow at upper end. Prothorax slightly convex, 
narrower in front than behind, thickly pitted, the pits being 
close together and smaller in front. Elytra longish, cylindrical, 
rounded at their posterior declivity, not, or only a very little, 
wider than the prothorax and truncate at their base. Legs 
fairly stout, with largish tibie, curved, and toothed on their 
exterior edges. Tarsus yellowish-brown, with the first joint a 
little longer than the second, third a little larger, and bilobed- 
The second abdominal segment nearly as long as the third and 
fourth united. Length 4th inch, Pl. XVI, fig. 3, a, shows a 
dorsal and side view of this insect. 
Life Fitstory. 
This beetle was discovered in the blue pine. It bores into 
the bole of largé trees, coming in much later than the Blue Pine 
Tomicus. The beetles were found boring egg-galleries (?) 
in the bark in the third week of June when the adults of the 
first generation of the Blue Pine Tomicus, which were plentiful 
in the tree, were nearly mature, some having already left the 
bark. It is thus evident that it requires less fresh bark than 
its companion, but I have no evidence that it will breed in 
dead bark, In thus attacking the main trunk it differs from 

