239 
POLYGRAPHUS MINOR, MS, 
Plate XIII, figs. 1, d,3. Plate XV, figs. 2, 3, 4. 
Reference :—This beetle is new to the British Museum collection. I call it 
provisionally Polygraphus minor, MS. 
Classification: Order, COLEOPTERA. Family, Scolytide. Sub- 
Family, Hylesini. 
Trees attacked :—Prnus excelsa (Blue pine) ; Picea Morinda 
(Spruce). 
Description. 
The /arva is similar to that of the above-described Poly- 
graphus (P. major, MS.) but smaller. — 
The dcetle also resembles the latter in shape but is smaller. 
It is oblong, pubescent, with thorax broader behind than in 
front and head exposed, the latter when seen from above being 
striated. Head and thorax black, the latter punctured and 
covered with scattered short hairs. The division between 
thorax and elytra is well marked. Elytra black with rows of 
grey-brown hairs running down them. Antenne as already 
described for the other Polygraphus and yellowin colour. Tarsal 
joints 4 in number and yellow. Ventral surface shining, 
sparsely covered with yellow hairs, 5 abdominal segments 
being visible. Length 2'5 to 2°75 millim. 
Pl. XIII, fig. 3, shows a dorsal and side view of this insect. 
Life History. 
This beetle was first discovered at the beginning of May 
boring into blue pine in company with the Tomicus sp. It ap- 
peared to be in a younger stage of development than the larger 
beetle, and it is possible that it seeks out trees already attacked 
by it. The insect remains in the trees longer than the Tomicus 
and will attack trees whose bark has lost the freshness the latter 
requires. The beetles infest the bole of the tree and are only 
rarely found in the tops and branches in company with the 
Polygraphus major. 
