180 BIOLOGICAL SI'UVKV OF 



Desmocerus Serville 



D. pallia! ts (Forst.) (14574). Elder-borer. The larvae 

 live in the stems of elder (Sambucus canadensis), and the 

 adults occur on the flowers and foliage from June 15- 

 July 25. Common. 



Molorchus Fabrieius 



M. bimaculatus Say (14584). Breeds in maple and ash. 

 Bar Harbor and on wild cherry Great Heath, June 6 (Br.). 

 Rare. 



Ropalopus Mulsant 



R. sanguinicollis (Horn) (14612). Taken at S. W. Harbor, 

 July 10, 1910 (Fernald). Penikese beating wild cherry, 

 June 20, '37. Rare. 



Anacomis Casey 



A. lignea (Fab.) (14614). Bar Harbor, May 18 (Br.). 



Callidium Fabrieius 



C. violaceum (Linn.) (14622). Breeds in pine and the 

 adults can usually be found where boards with some bark 

 left on them are used in sheds and barns. Finely powdered 

 wood shows where the larvae are working 1 . The adults ap- 

 pear in June. 



Phymatodes Mulsant 



P. testaceus var. variabilis (Linn.) (14634a). Lab., June 



8. Larvae are said to be in oak. Scarce. 

 P. dimidiatus (Kby.) (14640). Larva breeds in oak, larch, 



hemlock and spruce. On damp logs, July 1 (Br.) ; Echo 



Lake, July 17. 



Cyllene Newman 



C. robiniab (Forst) (14671). Reared from locust, Aug. 20. 



