44 WOODPECKERS IN RELATION TO TREES. 



THE SENNA FAMILY (CiESALPINACE^). 



Two of the 12 native species of trees of this family are attacked by 

 sapsuckers, and one of them at least is much disfigured. One West 

 Indian species also is punctured by the sapsucker. 



LIST OF C^SALPINACE^E ATTACKED. 



Water locust (Gleditsia aquatica). — This tree is very commonly 

 attacked by sapsuckers near Longbridge, La., and swollen girdles are 

 produced similar to those figured for the honey locust. 



Honey locust (Gleditsia triacanthos) . — Near Longbridge, La., 

 nearly every tree is attacked by sapsuckers and protruding girdles are 

 usually formed. One tree (fig. 5 and PI. IV, fig. 3) was remarkably 

 deformed, having shelflike girdles, some of which extend halfway 

 around the tree and project 4 inches. 



Logwood {Ilxmatoxylon campechianum) . — Bahama Islands, Moore. 



the pea family (fabace^:). 



Ten arborescent species of this family occur in the United States, 

 of which two are known to be attacked by sapsuckers. 



LIST OF FABACE.E ATTACKED. 



Locust (Robinia pseudacacia) . — Randolph County, W. Va. (F. 

 73108). 



Sonora iron wood (Olneya tesota). — Arizona (A. M. 1.54). 



THE RUE FAMILY (RUTACEiE).- 



Only one of the nine native arborescent species is known to be 

 molested by the yellow-bellied sapsucker. 



Satinwood (Xanihoxylumflavum). — Southern Florida (A. M. 150). 



THE MAHOGANY FAMILY (MELIACE^e). 



The single native tree of this family, the valuable mahogany, is 

 attacked by sapsuckers. 



Mahogany (Swietenia mahogani). — Dr. Hopkins obtained speci- 

 mens of veneer made of Cuban mahogany at Indianapolis, Ind., 

 which prove that the sapsucker attacks this tree. A trunk collected 

 on one of the Florida Keys has numerous pecks in the bark (A. M. 141). 



the spurge family (euphorbiace^:). 



One of the four native arborescent species is attacked by sap- 

 suckers. 



Large Guiana plum (Drypetes diversifolia) . — Florida Keys (A. A. 

 140). 



