230 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
The beetle.— The form is elongate, like an Elaterid of the genu.s Melanotic, coars.lv 
ponotared and pabesoeot; kbe h<-a<l is prominent and horizontal; the maxillary 
palpi are moderate in length and hut slightly dilated ; the antenna- are long, slender, 
and feebly serrate, and the third joint is not longer than the fourth; the anterior 
ooxte are oval and separated by the presternum, which is also slightly prolonged ; 
the middle ooxa are equally separated ; the hind coxae are less distant ; the tarsi are 
filiform and the claws simple; the tibial spurs are long. (Leconte.) It is brown, and 
five tenths of an inch in length. 
12. THK T1JKK-CK1CKKI. 
(Eeanlkm niveau Serville. 
Order ORTHOPTBBA ; family Gryllid.i . 
Boring into the corky bark of the elm in the Southern States, inserting it- 
irregularly, not in regular series as when it oviposits in the stems of the blackberry, 
raspberry, grape, etc. ; a slender pale-grei n cricket, with white wings and a large 
ovipositor; the males shrilling loudly. 
The eggs of the tree-cricket begin to develop as soon as they are laid 
in the early autumn, and the embryo partially (level <>]>s. go that the 
rudimentary limbs may 
be seen, as well as the 
mouthparts; the insect 
completes its develop 
meut in the early part of 
the following summer, appearin 
Fig. 76. Female tree-cricket* natural 
size. — After Hart is. 
early in August. 
Fig. 75. Male t r e e - 
cricket.- Afternoo- 
ns. 
AFFECTING THE LEAVES. 
13. The spring canker worm. 
Paleacrita vernata (Peck). 
Order Lepidoptera; family Phajuenid^e. 
Very injurious to the elm in the Eastern States, stripping the trees ; a dark-striped 
measuring worm varying in color to pale green, transformiug from the middle to the 
last of June in the earth to a pupa, some appearing in the autumn, hut most abun- 
dantly in March; the female grub-like, the male winged. 
Originally confined, as an injurious insect, to Xew England, it is now 
destructive in the Western States (Illinois and Missouri) and must 
originally have occurred all over the United States east of the Missis- 
sippi, as I have received it from Texas. 
* Am 
Fig. 77. Spring Canker worm; b, Fie. 7& a. female Spring canker-worm moth; b. 
eggs; e, aide; d, back of a aeg- male; e, antenna) joints of female ;dr one of female 
merit. — After Riley. abdominal segments; e, ovipositor.— After Riley. 
About the 1st of May, at the time when the leaves of the apple are 
unfolding, the young canker worms break through the eggs, which have 
