140 THE CAISAIJIAN ENTOMOLOGIST. 



rows." The insects which have proved injurious to the following fruits, 

 vegetables, trees, etc., during the past year, together with the best 

 methods of preventing their ravages, are also treated of in the following 

 order : Apple, beans, cabbage, carrots, corn and grass, gooseberry, hop, 

 mangold, oak, onions, parsley, pine, potatoes, raspberry, turnip and 

 willow. The report also contains chapters on marsh snails and the ox 

 bot-fly. Miss Ormerod has succeeded in awakening much interest in 

 England on the subject of injurious insects, and by her careful observa- 

 tions and experiments has conferred lasting benefits on the agricultural 

 community. 



CORRESPONDENCE. 



Dear Sir: On page 113 of the present volume I stated erroneously 

 that in neither of Mr. Scudder's lists of food-plants was willow attributed 

 to F. Ttirnus. In " Butterflies," p. 309, willow is given. It is however 

 an exceptional food-plant. W. H. Edwards. 



COELOPA FRIGIDA, FALLEN. 



Dear Sir : The occurrence of this fly (which is common along the 

 shores of northern Europe) in N. America, was known long ago. It is 

 always found where Fiicus vesicidosus abounds. Nevertheless its previous 

 stages seem to be still unknown, and it is the intention of this note to 

 draw attention to this fact and to invite readers to fill this gap. Mr. J. H. 

 Sears, of Salem, Mass., collected the flies in tide pools at Marblehead, 

 Mass., Nov. 30, 1884. Ill 1877 I received a large number raised in the 

 cellar of the chemical laboratory of Harvard College, Nov. 6. There 

 had been stored a large quantity of fresh sea weeds for chemical examin- 

 ation. I think it is to be supposed that the larva lives not only in the dry 

 dead sea-weed, but probably also in the living. The species would then 

 be an addition to our known marine insects. After Zetterstedt, this 

 species is identical with Doumerc's Psallidomyia fucicola, but I cannot 

 consult this paper. Schiner, vol. ii., p. 319, says, Metamorphosis ignota. 

 I would be glad to be informed about the previous stages of this species, 

 or — if they are published to know the author. What is known about 

 the previous stages of the Diptera has not yet been collected, and is so 

 scattered in different papers that it is very difticult to find if the metamor- 

 phosis of a given species is known and published. 



H. A. Hagen, Cambridge, Mass. 



