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stripe (corresponding to the longer lateral yellow one of anguina), in which 

 are the spiracles; below this, upon under side, a row of irregular black spots. 

 Head and eleventh segments light red. No black ocellus on the top of the 

 latter, but a hump. 



This is doubtless the larva of the albifrons of Smith- Abbot. The trans- 

 verse reddish hump on the eleventh segment suffices to distinguish this from 

 the larva of anguina. 



Notodonta? sp. [PI. i, fig. 6.] 



On a fence under sugar maple tree, Sept. 7, 1841. The figure is of the 

 natural size, but not quite so much shortened as is the insect when at rest. 

 Seventeen twentieths of an inch in length. 



Legs sixteen. Body naked, very soft (like Hypcena), cylindrical, with a 

 short, blunt tubercle directed forwards, and of a yellow color edged with red 

 on the middle of the second ring. Color above and beneath pea green; 

 head and feet bluish green. Head large, hemispherical, eyes black, very 

 small; first ring wide before; last ring wide, hardly tapering, and with the 

 feet distant, the latter being edged behind with yellow and red. Fourth 

 and eighth and eleventh each with a semicircular, slightly elevated, crescent 

 shaped ridge, slightly convex backwards, of a light yellow color, bounded 

 before by a slender purple line, which is interrupted in the middle. There 

 are about seventeen yellow warts in two transverse rows (eight and nine) 

 on each of the rings, except the fourth, eighth and eleventh, on which the 

 hinder row is replaced by the transverse, elevated, semicircular yellow line; 

 these warts are not setiferous. 



This caterpillar does not raise either end of its body when at rest, in 

 which it differs from the Nolodontiadce generally. Possibly it belongs to 

 some other group, perhaps to the Herminiadce. 



Heterocampa ? sp. 



Found Sept. 25, 1848. Green, minutely punctured with brown, and with 

 numerous fine, longitudinal, wrinkled, whitish lines. A cream colored dorsal 

 line on the first and second segments, dividing in two on the third segment, 

 thus enclosing a lozenge shaped space on back of the fourth to seventh seg- 

 ments; on the eighth the white lines meet, and on the ninth they separate 

 again, and run thence to each anal proleg, widening on the intermediate 

 segments so as to form another elongated, diamond shaped spot. On the fifth 

 and sixth segments the white lines are dilated on each side into a white 

 blotch; and on the seventh segment, before they meet they enclose another 

 white triangular blotch. The dorsal line is dilated on the first segment, 

 and there tinged with red. The dilated spots on the fifth and sixth seg- 



OCCAS. PAPERS B. 8. N. H. I. 20 



