222 Journal New York. Entomological Society. [Voi. vii. 



Chsetona spinosa, sp. nov. 



Male. Differs from the above description of nit ens a.s follows : Sides of second 

 segment of abdomen, hind corners of the first and front corners of the third segment, 

 yellow. Front one-fifth as wide as either eye, frontal bristles descending to insert on 

 of antennae, no orbital bristles, antennae reaching three-fourths of distance to oral mar- 

 gin, the third joint short pubescent, two and one-half times as long as the second, 

 cheeks one-seventh as broad as the eye-height. Thorax white pruinose along the 

 suture and with two subdorsal vitta: in front of it. Abdomen white pruinose at bases 

 of the second and third segments, the last three segments bearing discal macrochaeta?. 

 Length, 5-5 nim. 



Pennsylvania. A single specimen. Type No. 4123, U. S. Nat. 

 Museum. 



Chaetona grisea, sp nov. 



INIale. Differs from niteiis as follows : Base of antennae and the palpi yellow. 

 Front less than twice as wide as the lowest ocellus, frontal bristles descending to in- 

 sertion of antennae, no orbital bristles, antennae reaching three-fifths of distance to the 

 oral margin, the third joint bare, nearly twice as long as the second, longest hairs of 

 arista three times as long as its greatest diameter, sides of face bearing a few bristly 

 hairs on the upper half, facial ridges rather strongly arcuate. Thorax, scutellum and 

 abdomen subopaque, gray pruinose. Length, 6 mm. 



Georgia. A single specimen. Type No. 4124, U. S. Nat. Mu- 

 seum. 



WHIRLIGIG-BEETLES TAKING A SUN-BATH. 



By William T. Davis. 



Walking along the banks of the Pequanock River in Passaic 

 County, New Jersey, on the 30th day of May, the writer noticed one 

 of the very common assemblages of whirligig-beetles swimming about 

 among the twigs of a tree branch that lay in the water. Upon draw- 

 ing nearer it was discovered that three of the beetles had climbed up 

 the branch several inches above the water, and were evidently enjoy- 

 ing a sun-bath, in the same manner that turtles do under similar cir- 

 cumstances. Like turtles, also, they slipped off of the branch into the 

 water, but they allowed one to approach quite close before taking 

 alarm. Several specimens from the assemblage were captured, all of 

 them proving to be Dinciites discolor. Entertaining accounts are given 

 of the habits of whirligig-beetles in various entomological text-books, 

 but the sun bath custom does not appear to be mentioned. 



