ELM-BOREKS. 229 



8. Neoclytus caprcece Say. 



This insect was found in all stages in the fall of 1875 in felled 

 trunks of elm and hickory by George Waite, of Emporia, Kans. (Riley's 

 MS. notes.) 



9. Magdalis armicollis Say. 

 Order Coleoptera ; family Curculionid^. 



According to LeBaron (Fourth Eep. Ins. Illinois, 139) this weevil, 

 which is allied to the Magdalinus of the oak (Fig. 29), inhabits the elm, 

 living under the bark. Mr. H. G. Hubbard has also found it boring in 

 the elm, and has bred from the larvie four species of parasites. (Psyche 

 ii, 40.) 



The burrows were about an inch and a half long, running generally 

 with the grain, and in the cambium layer throughout their entire 

 length. From the cell at the end an exit pierced the bark as far as the 

 thin outer layer. The beetles usually attacked the upper branches, but 

 several small elms were found with the bark of the trunk undermined 

 nearly to the ground. Occasional specimens were found associated 

 with Saperda tridentata and Synchroa punctata in the thick bark of full- 

 grown trunks. Of the three parasites the more common one was a 

 Chalcid, probably belonging to the genus Storthygacerus of Ratzburg, 

 which preys upon the larvoe of Magdalinus, completing its transforma- 

 tions in advance of the beetle. 



The beetle. — Body reddish, punctured; head punctured, an obsolete impression be- 

 tween the eyes ; a dilated, impressed, abbreviated line over the insertion of the 

 antennae, sometimes obsolete or wanting ; thorax with much dilated coniluent 

 punctures; a polished longitudinal line near the middle; anterior angles with small, 

 erect spines, of which the anterior one is largest ; posterior angles slightly excurved, 

 anterior and lateral margins dull rufous ; elytra light rufous, profoundly striated ; 

 Btrise with approximate punctures ; thighs, with a robust spine beneath, near the 

 tips. Length from the eyes to tip of the wing-covers one-fifth of an inch. Var. 

 a. Thorax and beneath, excepting the feet, black. (Say.) 



10. Buprestis (Anthaxia) vU-idicornis Say. 



Order Coleoptera; family Buprestid>e. 



This buprestid is reported by Mr. H. G. Hub 

 bard as infesting the elm. {Psyche, ii, 40.) 



The beetle. — Head and thorax coppery red ; antennas 

 green; eyes rather large; thorax transversely indented _ 

 each side behind the middle ; reddish coppery, surface I 

 reticulated ; posterior edge rectilinear ; scutel triangu- 

 lar; wing-covers obscure or slightly brassy, slightly ru- 

 gose, destitute of striai, rounded at tip, entire or obso- 

 letely serrated ; beneath dark, brassy, brilliant ; tail 

 rounded, entire. Length rather more than one-fifth of FiG.7i.— Anthaxia virklicomis 

 an inch. (Say.) Smith and Marx del. 



11. Synchroa putictataNev! man. 



Order Coleoptera; family Melandryid^. 

 This insect has been found "" exceedingly abundant " by Mr. H. G. 

 Hubbard in the bark of the elm. {Psyche, ii, 40.) 



