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seed-pods of Asclcpias hiberosa and incarnata. I have twice had 

 occasion to observe the adult insect with rostrum deeply imbedded 

 in the stalk of the milkweed, and have kept specimens in confine- 

 ment feeding- upon the juice of the same. May, June and July. 



CryptorhyncJiHS bisigiiatiis Say. Several specimens taken in 

 the latter part of May at Clifton, N. J., on a chestnut log infested 

 with Lcptostylus macula, and during the last part of June fifteen or 

 sixteen examples were found on another log of chestnut, some of 

 them copulating; also taken on the trunk of a living beech tree in- 

 fested with Scolytids. It is probable that this species has similar 

 habits to C. paroc/ms, living under the bark of chestnut and possibly 

 beech. 



C. parocJms Hbst. is known to breed under butternut bark, 

 which appears to be its favorite food tree. Though I have taken 

 this insect often during several years it was always on butternut. 

 April and May. 



Acoptus suturalis Lee. lives in the dead wood of beech trees. 

 I have found the imagines in the wood March 27th to April 20th in 

 company with larvce apparently of the same species. One of these 

 larvae taken May 26th appeared about to pupate. The beetles were 

 crawling on the trunk of the tree early in July. 



Mononychiis vulpecuhis Germ, breeds in the seed-pods of the 

 blue flag (/rz> versicolor), the beetle issuing in the fall. The pertect 

 insect occurs in the flowers of the blue flag and the common crane's 

 bill {Geraniian maculaticm) in May and June. It has been stated 

 (v. Say, LeConte, ed. p. 286) to occur on the flowers of Cemiothus 

 americamis and Verbascum thapsus. 



Cceliodes flavicaudis Boh. occurs in, the greatest abundance on 

 the common nettle ( Urtica dioica) in May, June and July. 



C. accphahis Say is also abundant along the coast of New Jersey 

 on the evening primrose ( Oenothera biennis). June, July and August. 



Ceutorhynchiis septentripnalis (iyll. is another common species 

 sometimes found in swarms on the wild mustard (ySisynibrium offici- 

 nale). 



RhinoncHS pyrrhopus Lee. A pair of these little beetles were 

 taken in coitu on a common species of dock {Runiex), and being 

 confined in a small vial with a part of a dock leaf consumed it almost 

 entirely within a week. The species has also been observed by Mr. 

 M. L. Linell on a species of Riimex. June. 



Ccntrinus lineicollis Lee. A number of specimens were taken 

 at one time on the New Jersey tea plant- {Ceanoihus ainericanns) 

 July 9th. 



