254 



SUP.FAMILr X. CURCULIONINJE. 



strong!}' clawed at tip; tarsi spongy beneath, the third joint 

 broader, bilobed ; claws variable. One genus represents the tribe 

 in the United States. The principal papers treating of its mem- 

 bers are by 



Horn, G. H. "Magdalis" in Proc. Amer. Phil. Soc.. XITI, 

 1873, 452. 



Fall, H. C. "A Brief Review of Our Species of Magdalis with 

 Notes and Descriptions of other N. Am. Rhynchophora," 

 in Trans. Amer. Ent. Soc., XXXIX, 1913, 2372. 



I. MAGDALIS Germ., 1817. (A proper name.) 



To this genus, as above characterized, belong about 22 species 

 and four varieties from the United States, of which 12 species and 

 one variety occur in our territory. The males have the dorsum 



Fig. 71. Mayda/is (ciicscens Lee. a. Adult; b, larva: 

 c, pupa, all X <J. (After Chittenden.) 



of the abdomen with eight segments while the females have but 

 seven, and therefore a much longer pygidium than the male, in 

 which sex it is twice as broad as long. All are more or less pub- 

 escent when fresh, but the pubescence is easily removed and 

 usually lacking in cabinet specimens. All are bark borers, pupat- 

 ing in the wood of partly dead or dying trees. For convenience 

 they are separated into two groups. 



KEYS TO GROUPS OF EASTERN MAGDALIS. 



a. Claws simple; thorax not serrate on the sides except in barbicornis. 



GROUP I. 



oo. Claws toothed at base; thorax serrulate or dentate on the sides near 

 the front. (Fig. 71.) GROUP II. 



GROUP I. 



To Ihis group, which has been especially treated by Fall, be- 

 long six species and one variety from our territory. He separates 

 them as follows : 



