io4 Indian Museum Notes. [ Vol. V. 



of Boswellia serrata, Roxb,, vernacular name (t Salai ", growing in 

 the North-Western Provinces. On 7th March, 1893, the moth was 

 sent to Lord Walsingham for identification, and he stated that he 

 considered it to be congeneric with Hapsifera rugosella, n. sp. 

 On 25th March, 1901, Mr, John Hartley Durrant returned the moth 

 to the Indian Museum, noting that it is Dasyses rugosellus, Stn., $ 

 and that he has received specimens of it bred from Cycas circinalis, 

 Linn., Natural Order Cycadacece, in Ceylon.. Mr. Durrant's original 

 description of the genus Dasyses, and the synonymy of the two 

 species he places in it is given on page 92 ante. Mr. E. E. Green 

 notes that his " acquaintance with the insect is due to its destruction 

 of a museum [in Ceylon] specimen of the trunk of Cycas circinalis, 

 Linnaeus. The larvae drove their galleries into the soft core of the 

 stem. They were in thousands, and eventually reduced the stem to a 

 mass of decayed fibre. They had no particular season, but worked on 

 until they had consumed the entire trunk." A process-block of the 

 moth is given on p. 47 1. c, but as it is not very clear it has been re- 

 produced on plate XV, fig. 3, and shows a female twice enlarged. 



. On Cedrela Toona, Roxb. Natural Order Meliacece. The 



Toon tree. 



1. Hypsipyla robusta, Moore. Family Pyratidse. Sub-order 

 Phalsense. Order Lepidoptera. 



In June, 1901, Mr. A. W. Fremantle, Manager, Patahi Indigo 

 Concern, Chakia, Champaran, Bengal, forwarded some larvae which 

 he reported to be doing great damage to an avenue of young toon trees 

 he had planted in his garden. On rearing them they proved to be 

 Hypsipyla robusta, Moore, which is recorded by Sir George Hamp- 

 son to be found at Dharmsala and Simla in the Western and in 

 Sikkim in the Eastern Himalayas, in Dehra Dun, Roorkee, the 

 Western Duars, Madras, and in Ceylon. 



In August, 1901, I visited Patahi, and found this insect in large 

 numbers, both larvae and pupae, in Mr. Fremantle's young toon trees, 

 which are from 8 to 15 feet high. The larva is a borer, and is found 

 in the young shoots and petioles of the leaves. The young larva 

 starts from near the top of a shoot and burrows a tunnel downwards 

 towards the trunk of the tree, leaving only the bark. The shoot dies 

 off almost at once, becoming rotten at the top and breaking off. At 

 intervals the larva bores a hole through the shoot to the outside ; 

 through this hole the frass is ejected and accumulates in a large lump 

 on the outside, held together by the transparent gelatinous white 

 iuice of the tree, these lumps of coagulated sap being found also in 

 the bores made by the caterpillar. Below the point of injury to the 



