INSECT NOTES FOR 1912. 459 



been described by Mr. H. L. Viereck in the Proceedings of 

 the U. S. National Museum, Vol. 42, p. 622, 1912. 



ANT SWARMS. 



Some male and female winged ants were received from 

 Squirrel. Island Aug. 28 with the following account by the col- 

 lector. Mr. Alex Doyle. 



"They invaded this island last Sunday. They seemed to 

 come in numerous different swarms from over the water, 

 from the east or northeast. Each swarm was so dense as to 

 present the appearance at a distance of 1-2 to 3-4 mile of small 

 clouds floating across a clear sky. They drifted by my house so 

 floating across a clear sky. They drifted by my house so 

 thickly that by reaching out the hand or a cap from the piazza 

 they could be captured, yet not one entered the piazza." 



COLEOPTERA. 



BEETLES. 



Haltica bimarginata. 



ALDER FLEA-BEETLE. 



Say. Journal Phil. Ac. Nat. Sci., IV, 1824. 



"Larva. Body somewhat flattened; head scarcely two-thirds as wide 

 as the body in the middle; black, becoming brown in front near the 

 laws. Body livid brown above; the tubercles black; paler beneath; with 

 three pairs of black jointed thoracic legs; no abdominal legs; but an 

 anal prop-leg. The abdominal segments each with a transverse, oval- 

 rounded, ventral, rough space forming a series of creeping tubercles, 

 and in front on each segment is a transverse, oval, crescentic chitinous 

 area bearing two piliferous tubercles; the back of each segment divided 

 into two ridges, each bearing a row of six sharp tubercles, bearing 

 short hairs; a single ventral row on each side of the ventral plate. 

 Length 7 to 10 mm. 



"Pupa. Body rather thick, white. Antennae passing around the bent 

 knees (femero-tibial joints) of the first and second pair of legs, the end 

 scarcely going beyond the middle of the body. Elytra with five or six 

 rather deep longitudinal creases. The salient points of the body armed 

 with piliferous warts. Abdominal tip square at the end, 'with a stout 

 black spine projecting from each side. Length, 6 mm." (Packard's 

 Forest Insects p. 631). 



"Adult. Oblong, subparallel. Above dark blue, moderately shining; 

 under surface and legs blue-black, antennae piceous. Thorax wider 

 than long, margins very narrow, the ante-basal depression deep, reach- 



