resting, and eight when in motion. It is cylindrical, in form, with 

 the head dark brown and of medium size. The body is dark yellowish 

 brown, and the head, thoracic and anal shields very dark, polished 

 brown. There are ten ligliter brown protuberances on each segment, 

 from each of which arises one pale hair. On the upper surface of 

 the ninth segment is seen the double undeveloped reproductive organ 

 of a light brown color. The legs are dark brown and the prolegs 

 yellowish brown. About the first of June the larva is from ten to 

 twelve millimeters in length, and the body has changed to a cinnamon 

 rufous color. From the middle to the last of June it curls or draws 

 together several leaves which it lines with silk, and in which it trans- 

 forms to a pupa. 



The pupa is seven millimeters long, brownish yellow, tapering from 

 the head to the posterior end, with the wing cases dark brown. 

 There are two rows of dark brown spines pointing backwards, across 

 each abdominal segment. The spiracles and anal segment are dark 

 brown. It remains in the pupa stage about two weeks and then the 

 moth emerges. 



Some years ago I found a most curious parasite attacking the larva 

 of this species. It was a Hymenopterous insect of a pea green color, 

 and was attached to the top and across the second segment of the 

 larva, on the outside and entirely out of the way of harm, and there 

 it grew fat at the expense of its host which died a lingering death. 

 The parasite was determined for me by Mr. E. T. Cresson as PTiyto- 

 dictxis vulgaris Cr. 



The following food plants are reported for this country : apple, 

 pear, plum, cherry, laurel-oak, and Prof. Harvey informs me that 

 he has bred it from black-berry. 



The food plants given in Europe are apple, pear, quince, Carpinus, 

 Crataegus, Sorbus and Quercus. 



SPITTLE INSECTS. 



The frothy spittle-like masses — called frog-spittle, toad-spittle, 

 snake-spittle, etc. — are formed by small insects belonging to the 

 family Hemiptera or true bugs, and are seen adhering to the twigs 

 and branches of shrubs and trees, and also to the stems of grasses 

 and otlier plants. 



During the early stages of its life, by means of special glands, this 

 insect secretes an albuminous liquid and discharges it from the pos- 

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