26 MADRAS FISHERIES BULLETIN VOL. XII, 



with young Etroplus from these ponds. A number of thick shelled 

 river-mussels of a large species from Dacca ( Lamellidens daccaensis), 

 obtained through the courtesy of Dr. B. Prasad, Acting Director of 

 Fisheries, Bengal, have been stocked on one of the ponds, with a 

 view to introduce them into this Presidency, where no species 

 exists having a shell thick enough for button-making. 



48. Anti-malarial Operations. — These form a considerable and 

 valuable part of our work and consist of three separate phases, 

 viz. : — 



(a) The breeding and distribution of mosquito larvicidal fishes 

 to municipalities and other public bodies. 



(&) The periodical stocking of pools in specially malarious 

 localities with such larvicides. 



(c) The conversion of mosquito-infested sheets of water into 

 fish-breeding ponds which also serve the purpose of fish-distribu- 

 tion centres for the stocking of irrigation tanks with young fish. 



49. Regarding the first of these, I regret to record that in spite of 

 the earnest recommendation of Government, municipalities and other 

 local authorities do not as yet avail themselves at all adequately 

 of the facilities for obtaining a good strain of larvicides from 

 this department. They appear either careless in the matter or 

 depend upon local supplies of what too often are species of very 

 inferior larvicidal quality. Only some 30,000 of these fishes were 

 in consequence distributed, a number totally disproportionate to 

 the needs of the province in this respect. The Sanitary Inspector of 

 the Madura Municipality was given a course of training in these 

 operations and advice and instructions were given in numerous 

 other cases, both to local officers and to private individuals. 



50. In the second category are the Cuddapah and Nallamalai 

 schemes. With regard to the former, operations have not yet been 

 possible as the jungle road from Pallamadugu to Paddagadi is still 

 under construction. As to the Nallamalai work, the bungalow 

 sanctioned in G.O. No. 391, Revenue, dated the 10th February 1917' 

 has at last been completed. The Collector's advice and approval 

 have been obtained regarding the construction of additional 

 ponds near Mahanandi for which proposals will be submitted to 

 Government shortly. 



51. Chingleput and Vellore Moat Schemes. — The schemes in this 

 category comprise at present proposals for the conversion of the 

 moats around the Chingleput and Vellore forts into fish farms to 



