GLIMMER-CHAFER. 
GENERIC CHARACTER. 
Antennae club-chaped, stiff, and shorter than the head. 
Eyes four, two on the upper, and two on the under side 
of the head. 
SPECIFIC CHARACTER. 
Gyrinus Natator. G. substriatus. Linn. Syst. Nat. Gmel. 1. 
p. 1611. 
Substriated. 
Dytiscus ovatus glaber, antennis capite bre- 
vioribus obtusis. Scop. Ent. Carn. 2 99. 
Scarabaeus aquae subrotundus e cceruleo vi- 
ridi splendente undique tinctus. Raj. 
Ins. p. 89. no. 9. 
Glimmer-chafer. . Geoff. Ins. 1 . pi. 3. f. 3. Roes. Ins. pi. 31. 
Schaff. Elem. t. 67. Shaw Gen. 
Zool. 6 . p. 39. pi. 11. 
This common inhabitant of our brooks and rivers 
is seen sporting near the surface in the summer 
season, and shining like a piece of looking-glass. 
They are so quick in their motions, and dive with 
such velocity that they are not easily caught, al- 
though the water sometimes literally swarms with 
them. The glimmer- chafer is a small insect, sel- 
