500 FOBTY-EIQHTH REPORT ON THE STATE MU81UM 



The Cottonwood Beetle. (Syracuse Union, for May 9, 1894, p. 

 2, c. 1 — 44 cm.) 



A beetle sent for determination, etc., as destroying acre after acre of 

 basket-willows in the vicinity of Syracuse, is identified as Lina scripta 

 (Fabr.). Has been destructive to cotton-woods in Western States, but not in 

 the State of New York. Observed in Keene Valley feeding on willows. 

 Description of the larva and beetle given. Nature of its injuries. May be 

 controlled by spraying with Paris green. Force pumps that may be used. 



[Extended in Ms. of Report (xi).] 



The Insect that Kills the Pine-Tree Borers. (Gardening, for 

 May 15, 1894, ii, p. 292, c. 2 — 8 cm.) 



Clerus formicarius was brought over from Germany, by A. D. Hopkins, 

 Entomologist of West Virginia Agricultural Experiment Station, at Morgan- 

 town, W. Va., and introduced into the pine forests of that State, to prey 

 upon Dendroctonus frontalis and other Scolytid bark-borers that were 

 rapidly destroying the pines and rendering them unfit for timber. 



Probably White Grubs. (Country Gentleman, for May 17, 1894, 

 lix, p. 386, c. 2 — 22 cm.) 



" White worms about as large as a man's little finger," reported as destroy- 

 ing a lawn, from Oceanic, N. Y. , are in all probability white grubs of the May 

 beetle. It is difficut to stop their ravages in lawns and grass lands. The 

 best method known to us is a liberal application of kerosene emulsion, to be 

 followed by heavy waterings to carry the kerosene into the ground to reach 

 and kill the grubs. 



Grubs of the size above stated should mature and stop their injuries aboiit 

 the middle of the following month, preparatory to their pupation and 

 change to beetles during the summer. — Benefit may be derived by placing 

 lanterns over tubs of water and kerosene on the lawn, to attract and drown 

 the beetles. 



The Periodical Cicada, or the Seventeen-year Locust. Issued as 

 a Circular of 4 pages, Albany, June 19, 1894. 



Remarks on the interest attaching to this insect; the two races of C. sep- 

 tendecim and C. tredecim; the six broods in the State of New York, and par- 

 ticularly the Hudson river valley brood; transformations of the insect; re- 

 markable above-ground chambers built by the pupse in a locality at New 

 Baltimore, N. Y., for purposes unknown. Figures of the chambers, and of 

 the transformations and egg-laying referred to, given. Request made for 

 replies to twenty questions proposed, relating to the present occurrence 

 of the Cicada. 



[See pages 420-425 of this Report (x).] 



