ENTOMOLOGICAL NEWS 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



Vol. XVI. 



NOVEMBER, 1905. 



No. 9. 



CONTENTS 



Herrick — Xotes on some Mississippi 



Mosquitoes 281 



Williams — Notes on the Life Histor>-of 



Hepialus Sequoiolus 283 



Girault — Descriptions of two new Hy- 



menopterous Egg-parasites 287 



Skinner — Descriptions of New Coleop- 



tera from Arizona 289 



Nason — Parasitic Hymenoptera of Al- 

 gonquin, Illinois — II 293 



Williamson— Itinerarj- of a Collecting 

 Trip, made especially in search of 



Dragonflies in Central America 299 



Smith— Letter to Editors 306 



Editorial 309 



Notes and News 310 



Doings of Societies 311 



Notes on Some Mississippi Mosquitoes* 

 By Glenn W. Herrick, Agricultural College, Mississippi. 



In our campaign against Stegomyia, Anopheles , and other 

 species of mosquitoes here at the college during the present 

 season, we have taken several interesting adults, some of which 

 are worthy of note. 



Megarhhucs portoricensis . — In the cup-like bottom of a mass- 

 ive iron post supporting one corner of a large water tank, 

 where the former rested on the masonry, were found the 

 larvae of the foregoing species. The receptacle in the post 

 was about twelve inches deep and half full of rain water. 

 Here we found five large dark brown, very spinj' larvae and 

 also remnants of cast pupal skins, conspicuous for their long 

 spines made especially prominent bj' the colonies of Vorticellae 

 clinging to them. Other larvae, C. pipiens, were present in 

 the water. 



The lar^'a of Megarhinus reminds one strongly, at first glance, 

 of that of Psorophora, except that it is much darker in color 

 and noticeably thicker and heavier. It is remarkable for the 



281 



