62 ENTOMOLOGICAL SOCIETY 



partment of Agriculture while in Australia in quest of preda- 

 ceous enemies of scale insects, stated that there the c?c? of Le- 

 canium hesperidum were as abundant as the $ 9 , but he appar 

 ently failed to send in any specimens. 



Dr. Ash mead exhibited specimens of a peculiar leaf- sew 

 ing ant (CEcophylla smaragdina Fabricius) from the Philip 

 pines, together with examples of its work. The method by which 

 the leaves are sewed together is most remarkable. The worker 

 ants hold their own larvae in their jaws while these spin a fine 

 thread that holds the edges of the leaves together. Dr. Ash- 

 mead commented on the structural peculiarities of the species. 



Dr. Dyar presented for publication the following papers : 



ADDITIONS TO THE LIST OF NORTH AMERICAN LEPI- 

 DOPTERA, NO. i. 



BY HARRISON G. DYAR. 



The following are a few new species that have come to notice 

 together with some species here first recorded as belonging to 

 our region. 



Family NOCTUID.E. 

 Tornacontia mediatrix, n. sp. 



Head dark brown, thorax white, a broad tip to the collar and a pair of 

 dots on posterior disk brown-black. Fore wings white, basal space shaded 

 with pale leaden gray to beyond t.-a. line, which is white and twice angled 

 in one specimen, lost in the other and represented only by the gray shade 

 beyond it. A quadrate purplish black patch on the center of inner margin 

 reaching to median vein, narrowly separated by awhile line from a broad, 

 leaden gray band which runs to costa before apex. Two gray spots on 

 costa at points of inception of the obsolete median and t.-p. lines. Orbic 

 ular a black dot; reniform a broken black ringlet; a small gray patch at 

 apex; a terminal row of black dashes; fringe gray at anal angle and above 

 middle of outer margin. Hind wings white, brownish outwardly. Ex 

 panse 24 to 25 mm. 



Eight specimens, cf and 9,Huachuca Mts., Arizona (Oslar), 

 Las Vegas Hot Springs, New Mexico (Schwarz and Barber). 



Type. No. 7686, U. S. National Museum. 



The species of Tornacontia, at present described, may be 

 separated as follows : 



