HEMLOCK CATERPILLARS. 873 



by this beetle, which has been obligingly identified by Dr. G. H. Horn, 

 of Philadelphia. Not only the bark of dead trees, but that of healthy 

 large trees had harbored great numbers of these beetles. They, how- 

 ever, had disappeared from the holes at the date (July 22) 1 was at the 

 White Mountains, and but a single dead specimen was found. Similar 

 mines were found in a hemlock at Brunswick, Me. 



8. The brown prionus beetle. 



Orthosoma hrunneum (Forster). 



Order Coleoptera ; family Cerambycid^ 



Mr. F. G. Schaupp writes me as follows concerning this beetle, which 

 is not harmful to the tree, attacking it usually when in the last stages 

 of decay : 



In a hemlock tree I found, July 20, in New York, hundreds of the larvae of all 

 sizes from S-SO""™ in length, the wood being exceedingly hard and tough, but although 

 the new developed imagines (soft) were very abundant, and although I found some 

 moldy dead pupae, I could not find a live pupa. 



AFFECTING THE LEAVES. 



9. Tolypelaricis. (Fitch). 



Aug. 30, I beat a freshly evolved specimen of this moth from a hem- 

 lock tree at Brunswick, Me., so that I have no doubt it lives on this tree 

 as well as the larch and white pine. 



10. Tetrads lorata Grote. 

 Order Lepidoptera ; family Phal^enid^. 



The moth was bred from a large twig-like caterpillar found on the 

 hemlock at Brunswick, Maine, August 25. The moth appeared in the 

 breeding-box April 25^ Tetrads crocallata feeds on the sumac, accord- 

 ing to Mr. Saunders. 



Larva. — Head flattened, square in front but not notched, slightly full on each side 

 of a slight median impressed line. Pale gray, with a diffuse straight vertical band 

 on each side, the middle being clear whitish gray. These dark latero-frontal bands 

 and the pale gray median band are continued on to the prothoracic segment. The 

 median whitish band is continued on to the meso-thoracic segment, but forms there 

 two linear parallel white thread-like lines inclosing a linear brown median line; on 

 each side of this ring, directly behind the prothoracic spiracle, is a large rough 

 tubercle ; the granulations coarse and prominent ; white on the sides, above tawny- 

 brown. On the first and second abdominal segments is a pair of swollen iufra-spirac- 

 ular rounded tubercles, concolorous with the body. The body is dull reddish brown. 

 The two piliferous warts are connected and converted into a transverse tubercle, 

 becoming larger towards the fifth abdominal segment; the tubercles behind rather 

 large but not connected. From the fifth abdominal segment to the end of the supra- 

 anal plate extends a black median line. Along the sides of the abdomen, on seg- 

 ments 2-5, is a lateral raised short brown line edged below with pale gray; these are 

 situated in front of the spiracles. Below are three large tuljercles on each segment, 



