'di< Indion J\liiseu:u Notes, [ Vol- IIL 



The following- notes show how the question now stands — 

 On dissecting a specimen of tiie locus-t Acridhm. peregrinum Oliv, taken 

 by Dr. L. A. Waddell in the Eed Sea on 29lli Auj^ust 1^90, g-ruhs of a 

 Tachinid parasite were found embedded in the tissues of tlie thorax. 



One of the specimens of Acridiiim peregnniim taken from a fli^'ht 

 which appeared on 27th May 1S91 in Gohilwad Prant, Kathiawar (for- 

 warded by the Assistant Political Ao;ent, Gohilv/ad Prant), was found to 

 have two similar grubs embedded in its thorax. 



On the 26th June 1891 the Deputy Commissioner of the Upper 

 Sind Frontier District noticed that the locusts were dying- in Un-f^e num- 

 bers from the effect of a g-rub. Numerous specimens of Acrid'ium pere- 

 grimim were forwarded in alcohol, and from these two similar Tachinid 

 ji-rubs were obtained. One of these grubs was found loose in tlie aleoliol 

 in which the locusts were pre-ierved, and the second was dissected out of 

 the thoracic cavity of one of the locusts, where it was found attached to 

 the muscles. Careful dissection of all the other specimens that were 

 forwarded failed to reveal any more grubs. 



On 27th August 1891 Mr. C. F. Elliot of tlie Forest Department 

 in Baluchistan forwarded specimens of Acridiam peregrinum. infested by 

 similar grubs which he noticetl were, very prevalent amongst the locusts 

 then to be found in his neighbourhood. 



On 29th August IS',)! Major H. P. Leigh, Dejmty Commissioner 

 of Koliat, forwarded numerous specimens of Acridiiini. peregrimim said 

 to be infested by the parasite. From these a single specimen of the 

 Hy was obtained, but so much damaged as to be unsuited for precise 

 determination. 



On 7 th October 1891 further specimens of the same locust, said 

 to be attacked by the ])arasite, were forwarded by C. E. S. Steel, Esq., 

 Deputy Commissioner, Upper Sind Frontier, Sind, but specimens of the 

 mature insect were not obtained. 



In the early part of April 1891 a vast number of small Dipterous 



, ^ . insects, much like diminutive house flies, were 



Locust G^^ parasite. i • i • • 



reared in the Museum from a set of Acndium 



peregrinum Oliv. eggs received from Peshawar. The flies emerged in 

 great number from the ^^"^ masses, and as each fly was probably re- 

 sponsible for the destruction of at least one locust &^):!:., the effect of the 

 parasite in reducing the numbers of the locusts must be very appreciable. 

 Specimens of the fly were sent to Mons. J. M. F. Bigot, who identified 

 them as belonging to a new species of Anthoviyia, which he proposes to 

 name Anthomyia pesJiaware7isis. It may be noticed that an allied species 

 {Anthomyia angustifronis) has been found to attack the eggs of the Rocky 

 mountain locust {Caloptenus spretuii) in America; Dr. Riley, the United 

 States Entomologist, indeed estimates that as much as 10 per cent, 

 of the eggs laid bv the Uockv mountain loaist are destroyed by it. 



