ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XVIII. DECEMBER, 1907. No. 10. 



CONTENTS: 



Jones Pitcher-Plant Insects 413 



Lyman Thecla calanus and Thecla 420 



edwardsii 420 



Kellogg Insect Bionomics 426 



Brues On the Phorid genera Plasto- 



phora and Pseudacteon 430 



Bragg An undescribed dimorph of the 

 Box Elder Aphid Chaitophorus ne- 



gundinis 431 



de la Torre Bueno and Brimley On 

 some Heteropterous Hemiptera 

 from North Carolina 433 



Bock An absolutely sure method of 

 preservation of natural scientific 

 collections against insect enemies 443 

 Rehn A new species of Ceuthophilus 



(Orthoptera) from Kansas 445 



Wellman On the distribution and 

 habits of some West African Bees 447 



Editorial 449 



Entomological Literature 450 



Notes and News 450 



Doings of Societies 454 



Pitcher-Plant Insects II. 



BY FRANK MORTON JONES, Wilmington, Delaware. 



(Plate XV, XVI.) 



Exyra ridingsii Riley. 



In ENTOMOLOGICAL XEWS for January, 1904, a paper with 

 the above title gave the results of a few hours spent among the 

 pitcher-plants of Richmond County, North Carolina, in August 

 of the preceding year. In the territory then examined, Sar- 

 raccnia flai'a "trumpets'' and Sarracenia purpurca, our more 

 familiar northern species, were almost equally abundant; Ex- 

 yra ridingsii Riley and E. rolandiana Grt. were also present 

 in numbers, and the larva of the former species was illustrated 

 as found feeding in ftava. Opportunity for a more extended 

 stay among these most interesting plants came again this 

 year ; this time at Summerville, South Carolina, where Sar- 

 racenia ihrra is especially abundant, but where Sarracenia 

 pnrpiirea practically does not occur. Here ridiit(/sii was found 

 in numbers, but no rolandiana, which suggests that this latter 

 species prefers perhaps confines itself to [>nrpnrca, its 

 known food plant in the north. At Summerville another Sar- 

 racenia, minor Walt, (rariolaris Michx.), replaces pnrpnrca. 



