THE AMERICAN ENTOMOLOGIST. 



237 



and converted into fire-wood. Finding 

 them both in trunk and twig much perfor- 

 ated by the burrows of insects, he kindly 

 sent me some small bundles of twigs and 

 branches of f inch diameter and less, which 

 I placed in boxes, and occasionally moist- 

 ened. 



Most of the Coleoptera mentioned in the 

 subjoined list .were hatched from these 

 twigs, but I have added to those developed 

 in my library the names of some others 

 previously known to me as infesting the 

 same tree ; these are marked with an as- 

 terisk. 



The size of this list, numbering 24 

 species, several of which are rarely found 

 by collectors, and two of which are still 

 undescribed, indicates the large addition 

 to our knowledge of forest pests which 

 may be made by very simple means. 



My object in publishing it is to excite 

 some interest among students to pursue this 

 easy method of adding to their collections, 

 and, at the same time, of furnishing inform- 

 ation which will soon be of use. I am also 

 not without hope that the Commission em- 

 ployed by the Government to devise means 

 for protecting the forestry of the country 

 may be induced to furnish to scientific 

 men not thus employed, specimens which 

 may lead to the identification of the tree 

 parasites. Such identification of species 

 is, of course, a pre-requisite for the devis- 

 ing of rational means for repressing the 

 injuries done by these insects. 



I addressed the Club briefly on this sub- 

 ject last year, and I am glad that what I 

 then said has been supplemented by some 

 practical instructions from Mr. C. G. 

 Siewers,* Newport, Ky., indicating con- 

 venient methods of making these observa- 

 tions. 



Though I have not yet received any lists 

 of species thus obtained from our forest 

 trees, and but few specimens for determina- 

 tion, I cannot believe that in a country so 

 eminently given to 'practical' pursuits, the 

 importance of this subject will continue to 

 remain unrecognized. I hope that by the 

 time the Commission on Forestry, ap- 



* Canadian Entomologist, 1880, 138. 



pended to the Department of Agriculture, 

 is ready to make a final report, some com- 

 petent person, albeit not receiving gov- 

 ernment recognition in an official capacity, 

 may be prepared voluntarily to furnish a 

 list of forest insect-pests. 



Without such an appendix, any report 

 made by that Commission will be conspi- 

 cuously imperfect; the list should contain 

 the names of at least the most easily col- 

 lected and most destructive parasites of 

 each one of our valuable forest trees, with 

 the time of appearance, and the length of 

 period of evolution. 



List of Species. 



Lyctus striatus.* 



Anthaxia viridifrons, April loth. 



Agrilus egenus, April 21st. 



, probably n. sp., April 8th, 



Phyllobsenus dislocatus. 



Chariessa pilosa, April i6tli. 



Sinoxylon basillare. 



Heterachthes quadrimaculatus. 



Phyton pallidum, May 20th. 



Molorchus bimaculatus. 



Cyllene picta.* 



Neoclytus erythrocephalus. 



Tillomorpha geniinata. 



Acanthoderes quadrigibbus. 



Liopus cinereus, April 24th. 



Ecyrus dasycerus, April 21st. 



Saperda discoidea. 



Oncideres cingulatus. 



Dysphaga tenuipes* (fide Haldcnian). 



Tribolium, n. sp., March. 



Lsemosaccus plagiatus, April and August. 



Xyleborus celsus. 



Thysanoes fimbricornis, April and May. 



Chramesus hicorise, April and May. 



FOOD HABITS OP THE LONGICORN BEETLES 

 OR WOOD BORERS. 



BY THE EDITOR. 



Among the vast number of insects 

 injurious to our forests, shade and fruit 

 trees, none hold a more prominent posi- 

 tion than the Longhorns or Longicorns 

 {(JerambycidcE). The larvae or grubs of 

 these beetles bore into the wood of various 

 trees, shrubs and ligneous plants, some 

 species confining themselves to one species 

 of tree, while others take a wider range and 

 attack several, or work indiscriminately 

 in all the species of a genus. 



