ASH-TREE BORERS. 543 



the moth on account of parasites. Miss Murtfeldt has observed the 

 same caterpillar in the twigs of the maple {Acer dasycarpum). It seems 

 to bore indititereutly into any plant with a soft stem or twig. (Can. 

 Ent., XV, p. 174.) 



6. The ash tree clytus. 



Neochjtus capra;a Say. 



Order Coleoptera ; family Cerambycid^. 



Under the name of ash-tree borer Mr. G. Thomas, besides stating 

 that the larva of this species bores in the ash, adds that it is " quite 

 common in southern Illinois." 



Mr. Shelby Eeed, of Scottsville, N. Y., in 1880, refers briefly, in the 

 American Entomologist, to " the wide-spread destruction of the black 

 ash forests" in his vicinity, and speaks of the web-worm {Hyphantria 

 cunea) and a root-borer as affecting them. Professor Riley, the editor 

 of the journal, in commenting on his letter suggests that the injury 

 was due rather to the root-borer (probably Neoclytus caprcva Say) than 

 to the web- worm. 



Beetle. — Dark brownish-purple head ; and thorax darkest ; eyes nearly circular, 

 behind them a narrow yellow border; thorax barrel-shaped, deep purple, surrounded 

 by three very narrow yellow lines, one at each end and one in the middle ; scutel 

 yellow ; wing-cases crossed by three yellow bands ; tirst, a semi-circular band from the 

 scutel running backwards and round up to each shoulder; then another of similar 

 shape about the middle, with the circle reversed ; then a straight band, and a strong 

 spine at the tip of each ; length, half an inch ; width one-seventh of an inch. 



7. Tylonotus bimaciilatus (Hald.). 

 Order Coleoptera; family Cerambycid^. 



This beetle was by its original describer, Haldemann, said to in- 

 habit the ash, and Mr. A. S. Fuller, according to Riley, also reports it 

 as living in the black ash. Mr. Bland (Proc. Ent. Soc. Phil., i, p. 59) 

 records it as " found under the bark of the tulip-poplar." 



Beetle.— The genus Tylonotus is allied to Elaphidion, but differs according to Le 

 Conte in the femora being strongly club-shaped, and the antennae bisulcate. 



8. The ash timber-be e.tle. 



Hylesinus aculeatua Say. 



Order Coleoptera ; family Scolytid^. 



Ash posts in Kansas have been found by Mr. W. Knaus to be ten- 

 anted by this borer, though no growing trees were found which had 

 been attacked, those only having been selected which were already in 

 a decaying condition. 



"The burrows of this insect were almost facsimiles in every particu- 

 lar, consisting of a large central channel from 25 to 100™™ in length and 

 imm jjj width, made by the female, the young larva eating its way out- 



