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Listronotus. During the past year Mr. C. M. Weed has pub- 

 lished an account of the life-history of Z. latiuscuhis Boh., which he 

 found in all stages of growth in the stalks and seed-heads of Sagit- 

 taria variabilis. Some six years ago, while sweeping a small patch 

 of aquatic plants composed almost entirely of this species and a few 

 specimens of a species of Carex, I took. tuberos2is Lee. (July and 

 August), caiidatus Say (July), and appendicuJatiis one pair in copula 

 (June, July and August). The last named species I have recently 

 observed on the flower-heads of Sagittaria. The habits of all these 

 species are doubtless very similar. Mr. William Juelich has found 

 appendicidahis breeding in the lower parts of the stems of some 

 species of reed. 



Eiidociimis viannerheiviii Boh., a rare species, has not been 

 taken in this vicinity to my knowledge for many years. It once 

 occurred, so Mr. Juelich tells me, rather abundantly in the neigh- 

 borhood of Hoboken, N. J., under the bark of the swamp cedars. 



Lixiis concaims Say, I have usually taken on a common broad 

 lea\'ed variety of dock {Rumex), and less often on rhubarb. As 

 others have made the same observations, I think it more than likely 

 that the species breeds in the stems, of both as well as in Helianthus 

 and Chenopodium as stated elsewhere (F. M. Webster, Ext. Am. 

 vol. V, p. 11). The rosin-weed {Silphiitm) is also mentioned as a 

 possible food-plant. 



Barytyclmis discoidetis Lee. Several specimens taken years ago 

 on a small, low and rather common weed, species not determined. 

 May 28th to July nth. 



Otidoccphahis chevrolatii Horn. A single specimen was found 

 in a jar in which had been placed a piece of basswood that had been 

 attacked by some species of borers. It is a matter of doubt whether 

 the insect actually bred from the wood or had simply crawled into 

 some hole or crevice to hibernate. I have taken the adult insects 

 while beating hickories and chestnuts during the past July. An 

 allied species, O. Icevicollis Horn, has been hatched by Dr. C. \'. 

 Riley from the galls of a Cynipid on o;ik. 



Magdalis olyra Hbst. breeds often in abundance under the bark of 

 hickory trees, the larvcne subsisting on the inner bark. I have seen 

 a branch about four inches in diameter infested in fully eight feet of 

 its length by this species. Some four feet or more of the bark had 

 been loosened, exposing the wood. There was scarcely a space 

 larger than the tip of one's finger on this branch that was not com- 

 pletely riddled with the little round holes bored by the weevils in 

 their eq-ress through the bark, and I counted in one case a dozen 



