214 ENTOMOLOGICAL SOCIETY 



Polycentropus vestitus Hagen. 



Common in June and July. 

 Polycentropus lucidus Hagen. 



Along the Potomac river, from June to September. 

 Hydropsyche scalaris Hagen. 



Several from Washington, D. C., Falls Church, Va., and 

 Plummer's Island, Md., all taken during July. 

 Hydropsyche alternans Walker. 



Very abundant from July to September. 

 Hydropsyche speciosa, n. sp. 



Head brown; antennae pale yellow; thorax almost black; abdomen 

 dark yellow-brown ; legs pale yellowish. Wings dark brown, with several 

 large white patches as follows: One at base not reaching costal margin, 

 a nearly complete oblique band befoi'e middle, two triangular spots be 

 yond middle, one on front, the other on hind margin, their apices nearly 

 touching, a spot on costa beyond the pterostigma, and a few small spots 

 along apical margin; hind wings blackish. Length 5 mm. 



Many specimens from Plummer's Island, Md., 28th August. 

 Hydropsyche phalerata Hagen. 



Quite common from June to September. 

 Hydropsyche sordida Hagen. 



Several from Falls Church, Va., July. 

 Hydropsyche analis Banks. 



From Falls Church, Va., and Plummer's Island, Md., July 

 and August. 

 Philopotamus sp. 



One female from Glencarlyn, Va., I2th August. It has very 

 short wings, and appears to be new. 



Cyrnus pallidus, n. sp. 



Pale yellowish throughout; wings sparsely clothed with yellow and 

 gray hair, fringe gray; antennae paler than body, plainly crenate within 

 for entire length; vertex swollen ; mesothorax with a central depression 

 containing two approximate tubercles. Wings of usual shape and vena 

 tion (one specimen lacks a fork to upper branch of thyridium [fork 3]); 

 the forks 3 and 4 are shorter than in C. flavidus, and the wing a little 

 more slender; this, membrane shows only one pale spot, that on the fork 

 of thyridium, near middle of wing. Legs slender, spurs 3-4-4- Length 

 5 mm. 



Specimens from Washington, D. C., and High Island, Md., 

 iyth June; also Plummer's Island, Md., i9th August (Barber). 

 This is the first record of this genus in our country. 



