CCXXl 



there are such as are yet unknown in the United States, the case is very 

 different, and the greatest precaution should be taken by the Centennial 

 authorities to prevent their spread, by condemning and burning the speci- 

 mens in which they occur, or by submitting! them to some process of scald- 

 ing or heating that will utterly destroy all insect life. It is therefore very 

 important to have the species determined. During my recent stay in Phi- 

 ladelphia I took pains to look into this matter, with the following result: 



1. Bruchus granartus L.., in the Brazilian exhibit. An European spe- 

 cies, imported into New York a few yea is ago, but not yet widely spread. 



2. Bruchus fabcB RWey, in Jamaica beans. A species that has of late 

 years been quite injurious to our own beans. It is treated of in my Third 

 Report, supposed to be indigenous, and referred by our best authority. Dr. 

 Geo. H. Horn,^to obsoleius Say. 



3. Calatidra oryzce (Linn.) An elongate, reddish-brown snout-beetle, 

 about ^5 inch long. Abundant in Brazilian grains and in the exhibit of 

 our own Department of Agriculture. A cosmopolitan species, supposed 

 to differ from C. granaria in lacking wings and in other minor particulars. 



4. Silvanus surinamensis (Linn.) A brown elongate beetle, about -^^ 

 inch long, with three narrow ridges on top, and six teeth each side of the 

 thorax. In foreign and native grains of different kinds. Cosmopolitan. 



5. Butalis cerealella (Oliv.) A small yellowish, Tineid moth, with 

 long fringes to the wings. In different collections, both native and for- 

 eign, and particularly in the Egyptian exhibit. Preys on all kinds of 

 grains. Introduced many years ago into the Southern States, and now all 

 over the country. Cosmopolitan. 



6. Ephestia zece (Fitch). A somewhat larger, reddish-brown moth, of 

 the same family, with the basal third of front wings pale yellow. Very 

 common throughout the country in various kinds of grain and dried plants. 

 Described by Fitch as North American, but found also in the Egyptian 

 exhibit. 



All these species do their injury in the lar\'a state, and they are all I 

 was able to obtain. There is not one of them that does not occur in the 

 country, so that no alarm need be felt at their presence. In the case of 

 No. I, only, it behooves the authorities to make some endeavor to prevent 

 its being scattered over the country, as it is at present confined to the 

 vicinity of New York city. 



Mr. B. Pickman Mann, of Cambridge, has sent me a moth, new to my 

 collection, and belonging apparently to the Crambt'dcB, which he obtained 

 from the Egyptian exhibit, and I was unable to obtain or determine a small 

 Tineid from a case containing fine Italian straw goods in the main build- 

 ing. There may also be other specimens not noticed by me, and, in order 

 to prevent as far as possible the great benefits of the Exposition from being 

 marred by subsequent evil, it would be wise in the authorities, and they 

 owe it to the country, to cause one of the many competent Philadelphia 

 entomologists to make a thorough examination, and report with sugges- 

 tions before the Exhibition comes to an end. 



