43 



woro madf in tlio laboralory in cai^cs coiisl iiictccl for ihr purpose, but 

 no laNorahlc results were secure*!. 



Willie real i/.inu- llial an experinienler should uol have eonviet ions 

 before lie lias poi'fornied his exiierinients, Ihe wi'iler must eonl'essthat, 

 vei-y little was exi)ected fi-oni the use of the fun^Mis. The test was 

 undortaken since it offered the only liopo of relief, for we felt that, 

 since we liave authentic statements to tlie effect that a jj^reater oi- less 

 measure of siu'cess has been secured in othei- parts of tlie woi'ld, we 

 can be successful in the Tnited States if we can secure the same 

 organism and duplicate the conditions that obtained in those suc- 

 cessful tests. 



Remarks concerninu' the damaii'e caused by grasshoppei-s were made 

 by Mr. Fleteh r and Mr. (4illette. .^Ir. Cooley stated th t the area 

 devastated in Montana was so large that the pr()l)leni of control would 

 appi-oach that of covering- an acreage eciual to the entire State of 

 ^Massachusetts. The fungus disease received from South Africa had 

 I)i-oved of little alue, and Mr. Gillette stated that liis experience with 

 it had Ix'cn the same in Colorado. 



MORNING SESSION, WEDNESDAY. DECEMBER 30, 1U03—0 A. M. 



'I'Ik' meeting was called to order b}- Doctor Fletcher, and the follow- 

 ing i)aper was presented: 



OBSERVATIONS ON THE LIFE HISTORY OF LIBURNIA CAMPES- 

 TRIS. WITH NOTES ON A HYMENOPTEROUS PARASITE INFEST- 

 ING IT. 



By Otto H. Swkzkv, < 'ohinihns. OJn'o. 



In the lamilx I-'ulgoriil;e there are \ery few species whose life his- 

 tory has been completely worked out. For the most of the siiecies 

 very little is known of their egg-laying and the younger stages. Dui-- 

 ing the past season I have been abh' to make .some interesting obser- 

 vations, including a fairly ciunplete tracing of the life histoi-y of a 

 few species. 



Lilntrnid rampesfris is oui- most c(»muion sj>(;cies in grass lands 

 througliout th<' eastern and central i)art of the I'nited States. It is 

 one of the species showing <limorphism, some individuals having 

 elytra somewhat shorter than the abdomen (brachyi)terous), while 

 others have the (dytra extending for about one-t hii-d of their length 

 beyoiid the abdomen (maci-opterous). 



In the autumn of I'.tn-J, ;it Columbus, Ohio, nymphs of smne species 

 wei-e taken in ([uite large numbers, who.se identity at the time was 

 impossible to determine furt her t han t hat t hey bel(»nge<l to 1 he sub- 

 tani'ly I >elpliacin;e, as e\ idencnl by the ui<i\al»le spur at the ,ipe\ of 



