160 Kansas Academy of Science. 



certain, according to Mr. F. H. Chittenden, in his account of 

 the insect published in Circular No. 32, Division of Entomol- 

 ogy, United States Department of Agriculture. My records 

 can now establish this fact concerning elm as food-plant be- 

 yond doubt. 



Tremex columba Linne. (The pigeon Tremex.) One fe- 

 male found dead with ovipositor stuck fast in bark, September 

 26, 1904. 



ATTACKING THE BRANCHES PREFERABLY, OCCASIONALLY THE 



TRUNK. 



Magdalis armicollis Say. Numerous larvse taken from their 

 channels under bark, September 26, 1904; adults emerged 

 April 5 to May 29, 1905, from sections of branches and trunk 

 kept in breeding-cage. The tree from which the sections were 

 cut for breeding purposes was so badly attacked by the grubs 

 of this species that they had become established some distance 

 down on the trunk below the branches, where they encroached 

 on the regions tunneled by Saperda tridentata. 



PARASITES. 



Melanohracon ulmicola Viereck. Males and females flying 

 about and alighting on bark of infested portions of tree later 

 cut into sections for breeding purposes, September 26, 1904, 

 the females probing with the ovipositor into cracks of the 

 bark and holes of Magdalis armicollis, whose larvse abounded 

 beneath the bark; other specimens emerged during the fol- 

 lowing May from sections of the tree kept in breeding-cage. 

 Regarding the naming of these parasites, Mr. H. L. Viereck, 

 to whom a pair of specimens was submitted for study, wrote 

 as follows: 'This appears to be a new species and one that 

 has been confused with simplex. I propose to call it ulmicola." 



Brachistes rotundiceps Cresson. In company with Melano- 

 hracon tdmicola, September 26. Other specimens emerged 

 during the following spring from April 13 to May 24, from 

 sections of tree kept in breeding-cage. 



Spathius simillimus Ashmead. Specimens emerged April 

 8 to May 29, 1905, from sections of tree kept in breeding- 

 cage. Doctor Ashmead, who determined the species, added 

 the following remark: "All Spathius are parasitic on Cole- 

 optera." 



Haltichella ovatus Walker. Specimen emerged in May, 

 1905, from section of tree kept in breeding-cage. The speci- 



