February, '21] parker and seamons: grasshopper bait 141 



be noted here that AlorrilP and Ricker- have shown that molasses is not 

 necessary against cutwonns and several species of grasshoppers. 



5. It was found that lemons, which have been widely recommended 

 as the attractive element in grasshopper baits, were the least attractive 

 of all the materials tried with the exception of lemon extract. Oranges 

 gave better results than lemons, ranking fifth, while lemons ranked tenth. 



6. It should be borne in mind that the tests were concerned with adults 

 of only one species of grasshoppers, Camnula peUiicida Scudd., which 

 had gathered in great numbers for breeding and egg laying. The writers 

 wish it distinctly understood that they consider the experiments too 

 limited and the conditions too abnormal for the drawing of definite 

 conclusions or to warrant the radical changing of methods in preparing 

 grasshopper baits. The results of the tests are given merely to suggest 

 materials that may in the future prove more effective and cheaper than 

 those now in use. 



Scientific Notes 



Imported Pine Sawfly. Larvae oiDiprion simile were collectedat Harrisburg, Pa., 

 on September 13, 1920, by F. M. Trimble and T. L. Guyton, Assistant Entomologists 

 with this Bureau. Adults were reared and identification verified by Mr. S. A. 

 Rohwer. This, I believe, is a western record for Pennsylvania. 



J. G. Sandeks 



Salt Marsh Mosquitoes Far Inland. In the course of the mosquito survey of 

 southern Illinois conducted by the Illinois Natural History Survey, two salt marsh 

 species have been discovered. Anopheles crucians Wied. was reared from a pond at 

 Herrin in September 1920, and Aedes sollicitans (Walker) D & K was taken once at 

 Carbondale in March 1918, and several times in considerable numbers in May 1920 

 at Herrin. Identifications of these species were kindly confirmed by Dr. Dyar. 



Although apparently far from their natural habitat, it is possible that they are 

 living under conditions approximating the sea coast, since this section is underlaid 

 with salt, as witnessed by the occasional salt springs and salt outcroppings. 



S. C. Chandler 

 Field Entomologist for Southern Illinois 



The Thuberia or Wild Cotton Boll Weevil. (Anthonomus grandis var. thurberiae 

 Pierce) has made its ajjpearance in cotton fields near Tucson, Arizona. In 1914, this 

 insect was found by Mr. B. R. Coad of the U. S. Bureau of Entomology, infesting 

 experimental plots of cultivated cotton in the foothills in a location recognized as 

 especially favorable for such infestation to occur but the insect has not previous to 

 1920 been found attacking commercial plantings. Although not unexpected to those 

 acquainted with the wild cotton situation in Arizona, and the abnormal conditions 

 which have existed during the past season, the actual discovery of the weevil in 

 Arizona cotton fields marks a notable event in the history of cotton culture in the 

 arid Southwest. A. W. Morrill 



iJouR. EcoN. Ent., Vol. 12, Xo. 4, p. 337. 

 -JoiR. Econ. Ent., Vol. 12, No. 2, p. 194. 



