Packard.] J-^-* [Feb. », 



are large and unusually thick and stout, and are only slightly enlarged 

 at the base ; on one side of each seta at tlie middle is a short, obtuse turn, 

 just beyond which it contracts, and the blunt end is forked ; the forks, 

 however, not spreading wide apart. They are all (those of both rows) 

 alike in shape and size and length from the second thoracic to, and includ- 

 ing, the ninth abdominal segment, and are about one-third as long as the 

 body is thick. 



Tiie segments are distinct, and low down is a lateral series of minute 

 papilliform tubercles, one to each segment, and bearing a single minute 

 short hair. 



This larva is very different from tliose of Empretia and Adoneta, and 

 probably is a fair type of the young or freshly hatched larvae of Limacodes 

 and Heterogenea. 



The young larva was found feeding on the under side of a leaf of the 

 red maple at Brunswick, Me., August 12 ; it also occurred on the under 

 side of the leaf of the wild cherry in September, at Providence, and I have 

 received it from Miss Caroline G. Soule, of Jamaica Plain, Mass., where 

 it was found September 4, feeding on Gary a tomentosa. 



Stage III C!). — Length, 5.5 mm. Tlie shape of the body is like an inverted 

 skiff, the fiat dorsal keel being about half as broad as the whole body, 

 which is oval in outline, the body ending behind in a dull point, which 

 bears two bristles. The larva is pea-green, much darker than tlie under 

 side of the red maple leaf, and a little lighter than the upper side. The 

 head is pale green, the jaws dull amber. The crenulated ridge along the 

 back is pale straw-yellow. There is a dorsal row of about eight roundish, 

 pale straw-yellow spots. All the tubercles, which are concolorous with the 

 body, bear short, stifi', dark bristles. There is a row of from six to eigiit 

 faint greenish-yellow rounded spots along the slope of the back, outside 

 of the crenulated yellowish line. 



Stage /F(?). — Length, 7 mm. Body oval, flattened, in general rounded ; 

 the surface elevated into a dorsal region bounded by two keel like ridges, 

 the edge of each being serrated, each tooth bearing two obliquely situated 

 short spines which are green tipped with brown, the keel itself being 

 yellowish. Along the middle of the dorsal ridge is a row often whitish 

 spots with a greenish centre. Each spot is accompanied in front by two 

 lateral white dots. Outside and below each dorsal ridge is a row of 

 ten large white roundish spots, with dark centres ; below this row is a 

 series of white dots, and near the edge of the upper side is a row of 

 obscure white dots. The edge of the body seen from above is scalloped, 

 and on each scallop is a row of laterally projecting minute green spines, 

 the largest one of which is brownish. The body in general is pale green ; 

 the head paler, dark on the mouth parts, and the eyes are dark. The 

 surface of the body above is roughly granulated. 



Several larvte living on the under side of the leaf of the wild cherry and 

 chestnut occurred at Providence during the middle and last of September. 



Last Stage. — Length, 12 mm. ; width, 6-7 mm. The body is regularly 



