OF WASHINGTON. 123 



the region near Washington, July 20 to 28. Others have been 

 captured near Chicago and in other parts of northern Illinois. 



NOTE ON CYLAPUS TENUICORNIS SAY. 



The recent discovery of Cylapus tenuicornis Say, by Mr. 

 Otto Heidemann, in the neighborhood of Washington, recovers 

 for entomological science one of the long-lost genera and 

 species of Say's work upon the Hemiptera. This form is of 

 peculiar interest at the present time, since it forms the only 

 member of this division which has thus far been found in the 

 United States. Upon close comparison with Stal's description 

 of his Valdasus famularis and with the figure of the same 

 given by Mr. Distant in the Biologia Centrali- Americana, 

 plate 24, figure 7, we perceive that they refer to this insect, 

 and consequently that the later names, both generic and 

 specific, employed by these authors must give way to those of 

 Mr. Say. The species is now seen to have a wide range of 

 distribution. Dr. Stal's specimens were captured in Mexico ; 

 Mr. Say's types were found near New Harmony, Ind. ; and, 

 latest of all, Mr. Heidemann discovered numerous individuals at 

 Bladensburg, in August and September, upon fungi attached 

 to dried bark of trees. This species proves to be very varia 

 ble, both in color and structure. The males, as usual, have 

 the eyes more prominent than the females, although one speci 

 men of the female has those organs more widely separated 

 from the pronotum than in any male yet examined. In no 

 specimen yet studied is there a contact of the eyes with the 

 pronotum. 



Mr. Howard read the following : 



THE PARASITES OF THE HEMEROBIIN^E. 



BY L. O. HOWARD. 



The insects of this group are singularly well protected 

 against the attacks of natural enemies, the adults by their 

 offensive odor, the pupae by their strong cocoon, the larvae of 

 some by their coating of aphidid skins and of others by their 

 own strength, ferocity and agility, while the eggs are safely 

 mounted at the tip of long foot-stalks. They do not, however, 

 lack their characteristic hymenopterous parasites. In Europe 

 four primary parasites are known, viz : Microg aster ater, He- 



