225 



the leaf-miners in sweet potatoes and all other Ipomoea vines 

 here are the same species, whatever it may be, whether it is the 

 minor or somnulentella that occurs in America, or something 

 else. Dr. Perkins thinks there must have been an error in the 

 determination of the specimens of Bedellia that Lord Walsing- 

 ham had from him, for Walsingham has identified as somnu- 

 lentella specimens which came from an elevation of 4000 feet, 

 whereas Dr. Perkins says that there are no Ipomoea vines grow- 

 ing at that elevation. Some of the specimens that he determined 

 as minor, came from an elevation of 4000 also, while others of 

 them Dr. Perkins had bred from Ipomoea at lower elevations. 

 More recently, Mr. Busck has determined specimens reared from 

 sweet potato as orchillella Walsm. 



The species of Bedellia are so similar and so difficult to 

 separate, especially if not in a perfect condition, that I now 

 think that the specimens from 4000 feet elevation determined by 

 Walsingham as minor and somnulentella belong to my species 

 oplismeniella. 



Bedellia oplismeniella Sw. — This species is very abundant, 

 mining the leaves of Opllsmenus compositus, a native grass in 

 the mountain forests. It is difficult to distinguish the adult 

 moths from those reared from Ipomoea leaves, but there are lar- 

 val and pupal differences. (See Proc. Haw. Ent. Soc, 11. Xo. 

 4, p. 184, 1912.) In species of Bedellia, the larvae emerge and 

 form pupae unprotected by cocoons. The pupae are suspended 

 amongst a few fibers of silk, there being hooked bristles on the 

 dorsal side which are fastened into the web of fibers. They may 

 be on the surface of a leaf, or in some other protected place. I 

 have sometimes found them 10-15 feet away from the plant that 

 the larvae fed on. The pupae of oplismeniella are usually 

 placed on the lower surface of the leaf near the base. 



Bedellia hoelimeriella Sw. — The larA^ae of this species mine 

 the leaves of Boehmeria stipularis, a native shrub of the nettle 

 familv. I have found them on Mts. Olympus and Konahuanui, 

 Oahu'. 



Bedellia struthionella Walsm, — This must be a miner in 

 some native tree, but I have not yet discovered its food-plant. 



DIPTERA. 



FAMILY LlilXOBIIDAE. 



Dicranomyia n. sp. — I have found the elongate larvae 

 abundantly mining the leaves of a certain species of Cyrtnndra, 



