18 Indian Museum Botes. [ Vol. Ill* 



to 22nd of July, when a large number of flies emerged. These flies proved 

 to be identical with a specimen in the Museum collection previously 

 identified by Mons. J. M. F. Bigot as closely allied to the species Bacus 

 J'srrugiueus Fabr., they were therefore provisionally named Dacus ferru- 

 g'mens var. mangiferce. They have since been compared by Mr. O. E. 

 Janson with specimens in the British Museum and identified as belong- 

 ing to the species Uncus ferrugineus Fabr. The insect is no doubt the 

 one reported on pasre 38 of Volume II of these notes as destructive to 

 mangoes in Mozafferpore. According, however, to the observations 

 of Messrs. Simmons and Blechvnden in Calcutta, the insect generally 

 confines itself to over-ripe, injured, and decaying fruit; and it has been 

 suggested that its excessive multiplication in the present case may have 

 been due to previous injury to the mangoes by hail. 



The figure shows the imago and pupa, the natural size is indicated by 

 hah* lines. 



In August 1891 a block of Mahai wood [Shorea assamica) was 



received through the Dehra Dun Forest 



Shorea assamica borers. o i- i r .li t\ a. r* «. £ 



bchool, from the Deputy Conservator or 



Forests, Lakhimpur Division, Assam. It was found to be tunnelled in 

 all directions by Cerainbycidse larvae. A full grown beetle emerged short- 

 ly after the block was received and proved to be closely allied to a speci- 

 men in the Museum collection determined by Dr. Lameere as JVeocer- 

 ambi/x holosericeus [=zjEolesihes holoxericeus Gahan) % It differs, however, 

 from this species in possessing a series of spines on the antennae. A 

 specimen of the Cucujid Hectarthmn* brevifoasnm Newm. also emerged in 

 the rearing cage from the same block, and may perhaps prove to be 

 parasitic on the Cerambycid. 



With reference to the Baluchistan Poplar iEgeriid [Sphecia ommatia- 



_ , „ , formis Moore), Mr. J. dearborn writes in 



Poplar iEgeriid. J '* ° , _ 1 



April 1891, that he is now only able to find 



half-grown caterpillars, and that these are situated between the bark 



and the wood. This tends to confirm the supposition that the insect's 



life cycle is an annual one, and that the egjrs are laid in the autumn in 



the bark; the caterpillars would thus have time to get through the bark 



before the sap mounts in the spring, when they commence tunnelling 



into the heart of the wood. The percentage of attacked trees was found 



to be very much smaller in 1891 than in 1890,— a feature which Mr. 



Cleghorn attributes to the hardness of the winter of 1890-91. 



In May 1891 the Conservator of the Forest School Circle forwarded, 



from his camp near Chakrata in the Norfch- 

 Pinus excelrtri ScoHtid. *,- tt i i n r>* i 



* West Himalayas, a log or ruiua ejtcelsa 



