seed-pods ol Asclcpias iuberosa and incaniata. 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. 



Crypto rhynchus bisignatiis Say. Several specimens taken in 

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

 with Leptostyhis 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. parochiis, living under the bark of chestnut and possibly 

 beech. 



C. parochus 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 sutiiralis 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 larvae 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. 



Mononychus vulpecidus Germ, breeds in the seed-pods of the 

 blue flag (/m versicolor), the beetle issuing in the fall. The perfect 

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

 bill ( Geraniiau macidahim) in May and June. It has been stated 

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

 americanus and Verbascuni thapsiis. 



Cceliodes flavicaiidis Boh. occurs in the greatest abundance on 

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



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

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



Ceuforhyachus septentrionalis Gyll. is another common species 

 sometimes found in swarms on the wild mustard {Sisyinbriuni offici- 

 nale). 



Rhinoncus pyrrlwpus Lee. A pair of these little beetles were 

 taken i)i 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 Rmnex. June. 



Centrinus lineicollis Lee. A number ot specimens were taken 

 at one time on the New Jersey tea plant (^Ceanothus aniericamis) 

 July 9th. 



