IMarch, i9i8.] HuNGERFORIK OviPOSITION OF HeMIPTERA. 13 



Lii connection with his work in the limnological lal)oratory at 

 Cornell University it was the waiter's good fortune to observe the 

 oviposition of several of the aquatic and. semi-aquatic bugs. It is con- 

 cerning the latter that he wishes to report herewith. 



To one accustomed to collecting in the sluggish streams and arti- 

 fical ponds in Kansas the environs of Ithaca, N. Y., afforded a rare 

 opportunity. Here within easy reach of Cornell University are to be 

 found all gradations from sparkling brooks, broken by waterfalls 

 and rapids, to dark-colored sluggish streams of the upland bogs, from 

 spring-fed pool to lake conditions. 



It was on the border of a spring-fed pool in an upland meadow 

 near Ringwood Hollow that Hebrids and two species of Saldids w^re 

 found in numbers. The Hebrids were numerous in the moss and dead 

 grass by the water's edge while the Saldids were about the grass and 

 sedge clumps and upon the moist earth of the exposed areas. 



HEBRUS. 



On June 4 Mr. C. H. Kennedy brought to the writer an adult 

 Hebrus from Ringwood Hollow. Subsequently they were found about 

 several water bodies in the neighborhood of Ithaca. By June 22 at 

 Ringwood these little bugs were mating in numbers and many were 

 brought into the laboratory. 



On June 28 the pool was visited again and a goodly number taken 

 on the moist earth at the water's edge. By disturbing the moss it 

 was found that they would take to the open areas, even venturing 

 upon the water for a short run. They are not as safe upon such foot- 

 ing as are the little Microvelia which they superficially resemble, al- 

 though when one became submerged accidentally it walked upside 

 down under the surface film as upon a ceiling, stopping now and then 

 to clean the antenn?e and limbs as it frequently does when in its nor- 

 mal environment. The body was surrounded by a layer of air which 

 held it up to the surface film. It finally came upon a bit of moss 

 projecting from the water and escaped. 



The live bugs taken June 22 and June 28 were jilaccd in large 

 petries prepared for them l)y placing some moist sand in the bottom 

 and adding a few bits of moss. 



On June 26 the moss in the petric containing those captured June 

 22 was examined superficially under the binocular and no eggs dis- 



