Vol. XXvi] ENTOMOLOGICAL NEWS. 133 



Polygnotus Not an Egg-parasite of Cecidomyia (Hym.). 



In Entomological News, XIX, p. 352, Russell and Hooker record 

 a proctotrypoid as parasitic upon the eggs of their Cecidomyia foliora. 

 Mr. H. L. Viereck identified the parasites as Polygnotus and later sent 

 them to me. From their size it would seem a physical impossibility for 

 them to be true egg-parasites of the Cecidomyia. 



A Note on Limenitus Ursula (Lep.). 



Several larvae obtained from wild plum (Annapolis, Maryland) on 

 May 7, 1901, pupated on May 12, the butterflies emerging after ten and 

 a half to eleven days. 



A Few Notes on Lixus concavus Say (Col.). 



At Annapolis, Maryland, the eggs of this species were very common 

 in the stems of dock (Rumc.v), the third week in May, 1901. After 

 some watching, the following observation was made on the manner of 

 oviposition.* "When first seen, the female was excavating a cavity 

 into the plant with her jaws, her head toward the ground. After 

 about forty minutes she turned hastily about, fitted the tip of the 

 abdomen into the cavity and apparently without any exertion the egg 

 was laid, occupying about five seconds ; the cavity was then closed, but 

 in what manner was not noted. The male was close by the whole 

 time, usually upon the female's back, but not participating in the work. 

 Some of the dock plants bore as many as four eggs. On January 7 

 a full-grown larva was encountered two and a half inches below the 

 egg-scar ; eggs were then still abundant. On June 26, at Blacksburg, 

 Virginia, the adults were observed on cultivated rhubarb and later 

 many egg-scars were found along the stems containing eggs ; but in 

 none of these infested plants could larvae ever be found. A gummy 

 substance exuded by the rhubarb plant was often found over the 

 egg-scar. On January 25 adults were observed mating. 



Identification of Specimens. 



The following desire to be added to the list of those willing to de- 

 termine material from North America in their respective groups. (See 

 this volume of the NEWS, pages 33, 35 and 85 for further information 

 and for directions for sending specimens). 

 HEMIPTERA. I'cnlttti>nii<ln<' : I'ayton Stoner, Iowa City, fnwa; ('<>n'.ri- 



dac : J. F. Abbott, Washington University, St. Louis, Missouri. 

 HYMENOPTERA. Poinpilidac and 1'hilanthidac : Nathan Hanks, Ea>t 



Falls Church, Virginia. 

 NEUROPTEROID INSECTS (except Odonata). Nathan Banks, East Falls 



Church, Virginia. 



[*St-t- Ent. News XXI 11, pp. 401 and 474- Ei>.] 



