306 Verrill — Hercules Beetles from Dominica Island. 



The species formerly described by me* as Dynastes tricornis 

 (fig. 1) should be referred to the allied genus Strategics, of 

 which it is probably the largest known species. Its habits are 

 similar to those of Dynastes. 



Fig. 1. Sfrategus tricornis, about nafc. size. Phot. A. H. Ver. 



Note on the habits and larva? of the common Hercides beetle 

 [Dynastes Hercides), and other beetles. 



The Hercules beetle is common in the forests of inland 

 mountains, where it is found in bunches of a dozen or more, 

 clinging to the branches and trunks of the "LaGlui" tree, 

 on the sap or gum of which it feeds. As they usually 

 congregate on the branches at a considerable elevation, they 

 are seldom seen by the casual observers. In order to secure 

 specimens it is usually necessary to shoot them, thus spoiling 

 a large proportion for scientific purposes. Occasionally it is 

 possible to secure a regular supply of beetles by cutting down 

 a tree and scoring the trunks so that the sap runs freely. If 

 any beetles are in the vicinity they are soon attracted to the 

 felled tree and can be picked off by hand. Lights seem to 

 have no attraction for the Hercules beetles of Dominica. The 

 larva (fig. 2) is a huge grub, in general appearance resembling 



* This Journal, vol. xxi, p. 317, 1906. 



