208 The Ohio Journal of Science [Vol. XX, No. 6, 



abdominal segments a narrow median line and a spot on each side of the 

 first two segments, more or less grayish. The color markings are some- 

 what variable in different specimens. Length, 1.4 mm.; width, about 

 ..51 mm. The male is slightly smaller than the female. 



The species is named in honor of Prof. J. S. Hine. Type, 

 winged male from Mirror Lake, Columbus, in my collection. 

 Morphotypes, apterous male and female, from a small pond 

 in the old canal near Ira, Ohio. Numerous specimens, from 

 Ira (Summit Co.), Buckeye Lake, Hebron, Delaware, Columbus 

 (Mirror Lake and several small ponds near the University 

 campus), Prentiss and Rockbridge, during the summer of 1916. 

 The specimens from Ira w^ere collected by Prof. Hine and the 

 writer on a small pond in the old canal. The species was taken 

 in company wdth M. borealis Bueno, M. americmta Uhler, 

 Merragata foveata Drake, and M. brunnea Drake. It lives and 

 breeds near the shore of stagnant ponds and small lakes. Para- 

 types in the collections of Ohio State University, New York 

 State College of Forestry and the waiter. 



Merragata brunnea Drake. 



The types of this species and M. f areata are from Ohio. 

 The species ranges from Nebraska east to New York City and 

 south to Florida. The writer collected immense numbers of 

 nymphs and adults at Gainesville, Florida, during the summer 

 of 1918. All records indicate that the insect lives and breeds 

 in ponds, swamps and near the shore of small lakes. Both 

 brachypterous and macropterous forms are quite common. 



Merragata foveata Drake. 



This insect ranges from Colorado to Illinois and Ohio, and 

 east to New York and south to Florida. The writer took an 

 alate example in an old sw^amp near Gainesville, Florida. 



Gerris argenticoUis Parshley. 



Two males were collected at Sandusky by the writer. I 

 have another example from Mississippi. It w^as described from 

 the -New England States. 



New York State College of Forestry, Syracuse, New York. 



