March, I9I3.] DaVIS : DrAGONFLIES OF NeW YorK CiTY. 11 fliers and often range very widely from their breeding places. Es-pecially is this true of the females, which may often be found far away coursing through the woods, along the roads, or over fields in search of food. The male will often patrol a selected reach of stream or area of a pond, viciously attacking any other male of his own or another species which happens to wander into his chosen territory. Lihellula pulchella and Platheniys trimacvilata are much given to perching on sticks, cat-tails and in other exposed situations in the bright sunlight. Gomphines are most frequently seen when at rest, perched upon stones or upon the dry banks of streams or ponds. Some strong flying species, such as Anax Junius and the ^shnas are seldom seen at rest in the daytime, and often continue their search for prey during the twilight hour, though a crepuscular habit is not common to the group. Boyeria vinosa is usually found in shaded situations along streams, and the Somatochloras frequently wander far into the forests. The small Libellulines, Perithemis domitia and Nannothemis bclla seldom are found very far from the lily-pads and the open water at the edge of pools and lakes. On the other hand the species of Sytnpctriim, a related genus, range far afield. The small, thin-bodied demoiselles usually do not wander far and generally fly low among the grasses and weeds, or hover close over or rest upon the lily-pads and floating vegetation of the marshes. The species of Agrion (Caloptcryx) are fond of shady places along the creeks and springs. Notes on the habits and occurrence of our local species are given by Mr. Wm. T. Davis in the paper which follows this. DRAGONFLIES OF THE VICINITY OF NEW YORK CITY WITH A DESCRIPTION OF A NEW SPECIES. By Wm. T. Davis, New Brighton, Staten Island. In this Journal for March, 1895, Dr. Philip P. Calvert published a list of " The Odonata of New York State," and in the June, 1897, number, appeared his " Additions to the Odonata of New York State."