OF WASHINGTON. 161 



by Dr. H. G. Dyar to belong to two species hitherto unde- 

 scribed. Doctor Dyar has kindly allowed me the privilege of 

 describing and naming them. 



v Acrobasis sylviella, n. sp. 



Head and thorax ash-gray; abdomen gray, the segments ringed with 

 yellow-gray. Fore wings ash-gray, with smoky shadings ; the scale 

 ridge very dark, broad and short ; outer line dark, very distinct, accent- 

 uated by an outer pale-gray shade; beyond this a dark band followed 

 by a lighter shade; a marginal row of dark dots; fringes pale; discal 

 dots separate in two specimens, joined in one specimen. In the male 

 there is, on the under side, a very short, black costal streak near the 

 base of the fore wings and a notch on the costal margin near the base. 

 Hind wings yellow-gray, with smoky tinge, dark near margin. 



Expanse 19 to 20.5 mm. 



Two males and one female, East River, Conn., July 19 and 

 22, 1908 (Chas. R. Ely). 



Type. No. 12115, U. S. National Museum. 



S Acrobasis irrubriella, n. sp. 



This species is quite close to Acrobasis latifasciella Dyar, a from which 

 it may be distinguished by the following points of difference : Head 

 and thorax not so reddish ; band beyond the scale ridge narrower, only 

 slightly marked with orange-red ; outer line only slightly mesially ex- 

 serted, not so distinctly denticulate, not followed by an orange-red shade. 



Expanse 18.5-19.5 mm. 



Two males and one female, East River, Conn., July 8, 20, 

 and 24, 1908 (Chas. R. Ely). 



Type. No. 12116, U. S. National Museum. 



-Doctor Howard exhibited drawings of the antennae of 

 Tyndarichus and Schediiis, new genera of the family En- 

 cyrtinse, and stated that these insects are egg parasites of the 

 gipsy moth in Japan and apparently very important. He said 

 that it is rather remarkable that two such closely related 

 species should be parasitic on the same host in the same 

 locality. 



Doctor Howard also exhibited a drawing of Atoposomoi- 

 dea, a new genus of Elachertinae, and stated that while from 



a Notes on the species of Acrobasis, with descriptions of new ones, 

 by Harrison G. Dyar, Proc. Ent. Soc. Wash., x, p. 45, 1908. 



