Feb., '09] ENTOMOLOGICAL NEWS. 6l 



cept on last segment where the heavily chitinized, dark brown anal 

 plate is widely bordered with numerous dark hairs arising from small 

 tubercles. This plate (fig. ) which occupies obliquely half the seg- 

 ment contains a raised disc somewhat below its middle, bearing a pair 

 of slightly upcurved chitinized processes. On this plate between and 

 below the prongs are rough granulations. Feet dull white, with pale 

 brown blotches; prolegs dull white, crochets semicircular. Length of 

 mature larva 16 mm., width (at seg. 6) 2.75 mm. 



Described from fresh specimens, measurements from alco- 

 ,holic material. 



Pupa. Slender, cylindrical, slightly narrowest above middle, color 

 pale yellowish brown, darker at base of abdominal segments, and very 

 dark brown at the obliquely truncate cephalic end, which is heavily 

 armed with numerous little spines. Of these, there is a strong ridge 

 of large ones at the base of each antenna above, and a smaller group 

 on each shoulder. Brown hairs especially along dorsal edge of this 

 area and on thorax and abdomen. On lower dorsal border of seg- 

 ments 4, 5 and 6 of abdomen is a row of spines pointing obliquely 

 cephalad, and on the remaining segments is a row pointing obliquely 

 caudad. Somewhat below the lateral line of each of the spiny segments 

 are other spines arranged in a row, on segments 4, 5, and 6 few, on the 

 remaining segments becoming more numerous. Fused leg and wing 

 tips free from body. Length 15-18 mm., width at thorax 2.80 mm. 



Described from alcoholic specimens. 



The larva bores a smooth cylindrical passage in the stem of 

 Paccharis pilularis, and the oblique opening can be readily de- 

 tected by the quantity of pale-colored frass on the ground be- 

 low. The galleries may be in the smaller sterns or in the main 

 trunk and at least partly above ground. On tall shrubs the 

 caterpillar may be found working high up in the stems. Sev- 

 eral parallel passages often occur in one stem, and are usually 

 quite straight and almost invariably open on the under side of 

 the branch. 



The pupa, which is very active, lies some distance from the 

 bottom of the gallery, but may move considerably therein. 

 The pupal chamber is not silk-lined. A short search in winter 

 revealed no pupa; of this insect, but half-grown and nearly 

 mature larvns were plentiful. The larval period, while not de- 

 termined, must be of at least a year's duration. Adults were 



