March, 1905.] BUENO: HEMIPTERA FOUND NEAR NEW YORK. 41 



G. (Limnotrechus) canaliculatus Say. 



Central Park, N. Y. City, March 22; Palisades, X. J., April 19; Putnam Co., 

 N. Y., September 5 ; Staten Id., N. Y., May 7 ; Van Cortlandt Pk., N. Y. City, 

 March 28, April 25 and October I ; Westfield, N. J., June 20, August 13, Septem- 

 ber 9 ; Rahway R., Cranford, N. J., August 6 and 20. 



This differs from the preceding in its greater slenderness and longer and more 

 slender antenna: and legs. It is quite rare and is found in the three forms. How- 

 ever, at Echo Lake I took quite a number in a little dark cove full of drift and twigs, 

 among which they were hiding. The two last-named species are additional to the 

 N. J. List. 

 G. (Limnoporus Stal.) rufoscutellatus Latreille. 



Ft. Lee Dist, N. Y., April 19, May 9, July 18, August 9, September 7, Oc- 

 tober 10 ; Putnam Co., N. Y., September 5 ; Van Cortlandt Pk., N. Y. City, June 6 ; 

 Westfield, N. J., July 4- 



This abounds on the surface of the rock pools in the Palisades, where I have 

 found it only in the macropterous form. 



Genus TREPOBATES Uhler ( = Stephania B. White). 

 T. pictus Herrich-Schaeffer. 



Lakehurst, N. J., October 18 (Davis) ; Lake Mahopac, N. Y., September 5 ; 

 Echo Lake, Westfield, N. J., September 2. 



The specimen from Lake Mahopac was taken among a great number of Metro- 

 bates hesperhn Uhl. At Echo Lake, however, it occurred in swarms, in several stages, 

 near the water's edge, in company with Rheumatobates rileyi. Not heretofore 

 recorded from New Jersey. 



Genus RHEUMATOBATES Bergroth. 



This odd and interesting genus, in which the males are distinguished by their 

 peculiarly formed prehensile antenna, was discovered a number of years ago by Dr. 

 J. L. Zabriskie, in Long Island. It has not since, I believe, been recorded from 

 this vicinity. 



R. rileyi Bergroth. 



Echo Lake, Westfield, N. J., September 2; Rahway R., Cranford, N. J., 

 August 6, 20 and 27. 



This little bug is extraordinarily abundant in both localities, more especially on 

 the still waters of Echo Lake. On the river, it hugs the shores, and seeks the quiet 

 waters of little coves. It was taken in several stages at both localities. Only one 

 winged specimen was found, a male in cop., out of hundreds taken. 



Genus METROBATES Uhler. 

 M. hesperius Uhler. 



Lake Mahopac, N. Y., September 5. 



This insect is exceedingly abundant on the lake, where myriads congregate, 

 forming large black patches on the water near the shores. 



