— lyo — 



such holes to a square inch of surface. The larval mines, as obser- 

 vable on the inner side of the bark, are longitudinal, sinuous and 

 only moderately irregular. In specimens that have been preserved 

 there were so many larvae at work that their timnels sometimes 

 crossed and recrossed, and were at times interrupted by burrows 

 made by Chrysobothris feinorata, so-that individual mines could with 

 extreme difficulty be traced throughout their entire length. The bark 

 was almost entirely free from the wood, a layer of sawdust-like cast- 

 ings, nearly as hard as chalk, and an eighth of an inch thick, 

 intervening. 



There was evidence that a large proportion of the lar\a' had 

 been destroyed by a Hymenopterous parasite, and that many had 

 fallen prey to woodpeckers. The beetles occurred last year at Staten 

 Island, on hickories, in Mav. 



Magdalis hispoides Lee. Bred from larvae found February 22d, 

 in a twig of pitch pine {^PiJiiis rigida), under the bark. They so 

 closely resemble the larvae of Magdalis armicollis, figured in Le 

 Baron's Fourth Ills. Rep't. , that I had no difficulty in identifying 

 them as of this genus. The pupa was first observed March 7th. On 

 the 28th the pupa was found with the mandibles and eyes black, 

 rostrum reddish and caudal half of elytra dark. April ist it had 

 transformed. The head, eyes and dorsal surface were red, elytra 

 uncolored and ventral surface pale. On the following day the 

 imago appeared perfectly colored. My observations indicate the 

 duration of the pupal stage as about four weeks. The perfect 

 insect occurs on the branches or foliage of pines in June and July, 

 one specimen being taken as early as the 21st of May. 



Orchestcs pallicornis Say and O. niger Horn were taken to- 

 gether in July on the leaves of low willows. 



Gymnetronteter Fab., the common mullein wee\'il, I have taken 

 from the seeds in which it breeds in September; sometimes nearly 

 every seed conceals its little occupant. The beetle occurs on the 

 plant in June and July. 



Conotrachehis jiiglandis Lee. breeds in the green fruit of the 

 butternut, in the same way that its congener, C. nenuphar breeds 

 in plums and cherries. It is said to occur also on the walnut. 

 May to October.^ Other species of the genus are known to live at 

 the expense of deciduous trees. C. scnicuhis Lee, cicgans Say and 

 posticatus Boh., I have beaten from forest trees, but as I have taken 

 none of them in abundance my notes are not of a character to war- 

 rant any conjectures regarding their food-habits. 



Rlivssematus lineaticoUis Say is on record as breeding in the 



