(J34 FIFTH KEPORT OF THE ENTOMOLOGICAL COMMISSION. 
tubercles on the end of the body, and two paler less prominent ones 011 the segments 
in front. Body dull dark olive-green, with a blackish broad lateral stripe. Length, 
gnat 
Fig. 210.— Alder leaves skeletonized by saw-fly.— Bridgham. del. 
Fig. 211.— Larva of alder saw-fly. 
24. Xematus sp. 
A second, little larger, larva also occurred with the preceding species 
in September. 
Larva. — Like the preceding, but larger, without the tubercles; color olive-brown 
above, paler on the sides. Head brown, with a large vertical black patch and a 
smaller oval lateral black one. Length, 13" ,m . 
