ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XII. JANUARY, 1901. No. i. 



CONTENTS: 



Williamson. On the Manner of Ovi- 

 position and on the Nymph of 



Rehn. A New Genus of Deticinse. . . . 16 

 Coquillett. New Species of Diptera.. 16 



Tachopteryx Thoreyi i Brnce. New Variety of Lepisesia. . . . 19 



Lovell. Bees of Maine and Indiana . 4 



Slosson. - On a Florida Beach 10 



Rowley. Notes on Missouri Springs. 12 



Coquillett. A New Genus of Ortalidse 15 



Editorial 20 



Entomological Literature 21 



Notes and News 25 



Doings of Societies 27 



On the Manner of Oviposition and on the Nymph 

 of Tachopteryx Thoreyi. 



(ORDER ODONATA.) 



Plate I. 

 By E. B. WILLIAMSON, Vanderbilt University, Nashville, Tenn. 



Tachoptcrv.\ Tliorcvi Hagen is the only representative in 

 eastern North America of the legion Petalura (Selys ) of the 

 subfamily Gomphinae. This legion has been regarded by late 

 writers as the most primitive of all the Odonata Anisoptera. 

 No nymphs of this legion have hitherto been described, so it 

 is believed that the following description will be particularly 

 welcome. 



The nymph in question was collected by Mr. D. A. Atkinson, 

 near Pittsburg, Pennsylvania, on June 4, 1900. Mr. Atkinson 

 was collecting salamanders in a boggy spot along Squaw Run, 

 a tributary of the Allegheny River in Alleghany County, when 

 he saw the nymph clinging to the trunk of a tree, about t\v<> 

 feet above the mud from which it had recently crawled, as the 

 mud which covered it was not yet dry. This was about 10 A. M . 

 Placed in a box the nymph climbed up one side to a height of 



