No. 104.] 103 



front ono is the broadest : on segments 2 to 7 apparently (the pos- 

 terior ones not being separable) are six pairs of tubercle-like feet, 

 which, when protruded, show each a short black spine. The head 

 bears anteriorly two brown, slender, blunt projections, so short as to 

 be barely visible without a magnifier. The first two joints of the 

 dark brown tail are corrugated, and measure seven-tenths of an 

 inch in length, with the terminal black-tipped extensile joint pro- 

 jecting from them one-fourth of an inch. 



Other larvps were transferred for pupation July 16th, 18th, and 

 the last on the 25th. 



On the 18th the first imago appeared, determining the species as 

 Helophilus swvilis of Macquart — a species not at all uncommon in 

 the State of New York, and having an extended distribution from 

 Canada to Georgia, and in the Western States. It is readily recog- 

 nizable from the four large yellow spots on its abdomen, and the 

 three broad black stripes upon its pale yellow thorax. I have taken 

 the fly early in August upon the flowers of tansy and elsewhere. 



On the 25th of Jul}", a second example emerged from the pupa, 

 and two others later — date not noted. The pupal stage is probably 

 of about ten daj^s continuance. 



In the American Entomologist, ii, 1870, ]>. 142, an allied species, 

 Helophilus latifrons Loew, bearing five stripes on its thorax, is fig- 

 ured. From the te.xt accompanying the figure, it appears that the 

 fly was bred by Mrs. Mary Treat from a larva, which she had taken 

 with several others that were feeding upon plant-lice infesting some 

 chrysanthemums. This must be an error, for its larva cannot be 

 otherwise than aquatic, and entirely unfitted for .feeding upon plant- 

 lice. 



The Cabbage-fly — Anthomyia brassio^ BoiicM. 



A severe attack of this insect upon young cauliflower plants was 

 reported by Mr. D. W. Seeley, of Albany, and examples of the plants 

 badly eaten and having the larvie within and upon their roots, were 

 brought to me on June 8th. Mr. Seeley had made several applica- 

 tions of popular remedies for the arrest of the attack, without avail, 

 and had nearly determined upon taking up the entire crop and destroy- 

 ing it, although it would be at a loss of about a thousand dollars — esti- 

 mated value of the matured crop. The application of bisulphide of 

 carbon was recommended to him before an abandonment of the crop. 



Some ot'the abovelarva^, apparently full-grown, were placed in a box 

 with ground when received. Sixteen days thereafter, June 24th, they 

 gave forth the perfect fly. 



The Hessian-fly — Cecidomyia destructor Say. 



Wheat infested between the first and second joints with the Hes- 

 sian-fly, was sent tor examination, June 12th, by Mr. A. F. Dowd, 

 of North Huron, Wayne Co., N. Y. On stripping the sheaths from 



