One of these traps is illustrated in figures 1 and 2. In constructing the trap two of the hoops are bent in a circle (18 inches in diameter on the inside), and nailed together, the ends being trimmed to give a close fit. These form the bottom of the frame (_A_), and the other two, prepared in a similar way, the top (_B_). The top (_C_) of the trap is made of an ordinary barrel head with the bevel edge sawed off sufficiently to cause the head to fit closely in the hoops and allow secure nailing. A square, 10 inches on the side, is cut out of the center of the top to form a door. The portions of the top (barrel head) are held together by inch strips (_D_) placed around the opening one-half inch from the edge to form a jamb for the door. The door consists of a narrow frame (_E_) covered with screen (_F_) well fitted to the trap and held in place (not hinged) by buttons (_G_). The top is then nailed in the upper hoops and the sides (_H_) formed by closely tacking screen wire on the outside of the hoops. Four laths (_I_) (or light strips) are nailed to the hoops on the outside of the trap to act as supports between the hoops, and the ends are allowed to project 1 inch at the bottom to form legs (_J_). The cone (_K_) is cut from the screen and either sewed with fine wire or soldered where the edges meet at (_L_), or a narrow lath may be nailed along these edges. The apex of the cone is then cut off to give an aperture (_M_) 1 inch in diameter. It is then inserted in the trap and closely tacked to the hoop around the base. [Illustration: Fig. 2.--Conical hoop flytrap, top view. Letters designate parts as in figure 1.]