Biological Papers. 161 



men was identified by Doctor Ashmead, who referred to it 

 as follows: "The legs are missing from your specimen, but 

 the thorax, etc., resemble the Hockeria ovatus Walker in my 

 collection obtained many years ago in Florida." 



PREDACEOUS ENEMY. 



Chariessa pilosa Forster. (The hairy Clerid.) One adult 

 emerged May 9, 1905, from section of tree kept in breeding- 

 cage. 



TAKEN FROM DEAD STANDING TRUNK. 



The danger of leaving any dead or dying elm standing, as 

 well as any portion lying on the ground, from one season to 

 another, was forcibly exemplified by the riddled condition of 

 an old standing trunk of a large elm tree. This trunk stood 

 about fifteen feet high, the upper part of the original tree 

 having been cut off and destroyed several years previously. 

 As a support for climbing plants, the owner of the property 

 had utilized the trunk for ornamental eflfect, but had over- 

 looked the fact that it offered a harbor for borers and other 

 insects of a more or less objectionable nature. In spots where 

 the bark had fallen off or was stripped off from this trunk, 

 the characteristic openings to the tunnels bored by larvae of 

 Saperda tridentata appeared in great number, thus giving 

 evidence that the trunk had been a dangerous center for 

 prolific breeding of the enemy. Although no borers nor fresh 

 signs of their work were detected, the wood evidently being 

 too far advanced in age to induce further attacks of borers, 

 other species of insects, as indicated by the following names, 

 were found under the loose bark or in crevices of decaying 

 wood. 



Cremastog aster lineola Say, subspecies Iseviuscula Mayr. 

 Numbers of females and workers of this kind of ant, October 

 6, 1904. 



Ischnoptera pennsylvanica De Geer. One immature female 

 of this kind of roach, October 6. 



Scarites subterraneus Fabricius, variety substriatus Halde- 

 man. Adult, October 6. 



Brontes clubius Fabricius. Numerous adults, October 6. 



Tenebrioides sinuata LeConte. Adults, October 6. 



Tenebii^oides castanea Melsheimer, variety nignta Horn. 

 Two adults, October 6. 



Elater manipularis Candeze. One adult, October 6; de- 

 —11 



