890 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
abundance along the Cherry .Mountain road from Fabyau's to Jefferson, 
X. II.. a few miles north of the White Mountain house. The larehes 
had been ravaged rather severely and many of the worms were still 
lingering on the branches, feeding upon the leaves; while many young 
trees had been stripped, wholly or in part, of their leaves. Some dead 
larches were also to be seen. 
In this year (1885), Mr. John G. Jack reports that the larches at and 
around Chateauguay, Quebec, were k> all attacked/' and were more 
abundant than in former years. Mr. Jack further remarks : 
My father has told me that about thirty years ago the tamarack woods wore en- 
tirely defoliated, and looked as though scorched by tire, and he thinks that the saw- 
ily larvae Wen probably the cause. It was more noticeable at that time, as there 
were large tracts of land covered with tamarack forest that have now entirely dis- 
appeared. (Rep. Ent. Soc. Ontario, 1887, p. 17.) 
Its devastations in Canada. — Mr. Fletcher remarks in the Canadian 
Entomologist, November, 1884, that during the summer of 1884 he had 
observed enormous damage done by the larch saw-fly ; " he had first 
noticed it near Quebec, and had traced it all down the Intercolonial 
Railway, wherever any larch trees occurred, as far as Dalhousie, where 
he found it abundant." He found a small bug (Podisus modestus) de- 
stroying the larvae at Brome, P. Q. 
Rev. T. W. Fyles in the same journal stated that this saw-fly had ex- 
tended its ravages along the Beauce Valley to the neighborhood of 
Quebec, where it had stripped the larches bare. A second growth of 
leaves had appeared and this probably would save the trees. 
2. Sphinx caterpillar. 
This fine caterpillar, which I have as yet been unable to identify, was 
found by Mr. 0. G. Atkins at Hinckley, Washington County, Me., 
August 22, 1882. The following description was drawn up from a 
freshly preserved alcoholic specimen, with the colors still fresh. 
Larva. — Head elevated a little towards the vertex, which, however, is not conical, 
the sides of the head slightly square, with a dark purple line bordered in front with 
white; head flat in front, greenish yellow; hody greeu, sprinkled with minute dark 
rings with a clear center ; seven lateral, oblique, dark purple bauds becoming paler 
behind, and then white ; the seventh connects above with the black purple conspic- 
uous band on each side of the long slender horn. Supra-anal plate edged with white ; 
thoracic feet reddish, abdominal feet concolorous with the body. Length, 37 mm . 
3. I'latysamia Columbia Smith. 
This fine moth in its early state feeds upon the larch, where it has 
been found by the late Mr. Anson Allen as well as Mr. Charles Fish, 
of Orono, Me. The species was described by Prof. S. I. Smith, who 
found the cocoons alone " mostly attached to Nemopanthes canadensis and 
Rhodora canadensis; a few were found upon Kalmia angustifolia and 
maple, and one upon the larch." The following descriptions of the early 
