184 
"The beetles of the genus Trypodendron, Stephens, belong to the family 
- the Scolytide, or bark beetles, and to the sub-family Tomicida, : 
which the head is concealed ioc a convex thorax, ata is almos 
invisible when 108 at from above. 
"They are cylindrical in form, and of small size (1 £o 1j lines in 
length). 
The head bears a pair of antennz consisting of a long basal joint 
nearly equal in length to the five remaining joints, which are inserted 
atright angles to it; of these five joints the first four are very short, 
the terminal joint is large, flattened, and oval or triangular (Fig. 1). 
Fig.1. Antenna of Trypodendron showing characteristic terminal joint. 
The eyes are each completely divided into two parts m a horizontal 
septum, at the anterior end of whieh the antenna is inserted. 
‘The thorax is very convex and hemispherical, covered all over 
dt itio pun M ion. 
surface of a convex to b a4 with forward strokes of a small 
ded or gouge, so as to cover it di a number of small backwardly- 
! AN lytra are cylindrical, covered with rows of punetures ; they have 
no striate impression close suture, and no ex xeavations nor teeth 
at their apex, features occurring in most of the Tomicide. 
‘The legs are short, strong, and fla 
eee the tibi 
— and X tare ore 8 bir simple j jor Dood Catia ius Go 
— the family, and the division of the e eyes and absenee of any 
ral stria or apical excavation of the gie the genus. 
c the species are found in situ, thei 
lleries, with the series of 
nat larval chambers above abd below (Fig. 2. will at once indicate the 
