Fig. 5. Anderson River type. The specific marks are the extreme plainness of form, the lack of accommodations for the thumb and fingers, excepting the eccentric index-finger hole, the poor groove for the harpoon-shaft, and the absence of a hook or spur at the bottom of this groove. The accidental marks are cuts running diagonally across the back. In another specimen seen from the same locality the shaft groove is squared after the manner of the Cumberland Gulf type. Collected at the mouth of Anderson River, by R. Kennicott, in 1866. Museum number, 2267.

Fig. 6. Point Barrow type. The specific marks are the distinct handle without finger grooves, the very eccentric index-finger hole, the method of inserting the spur for the shaft, and the harpoon-shaft groove very shallow above and deep below. In the specimens shown by Mr. Murdoch there is great uniformity of shape. Collected at Point Barrow, by Lieut. P.H. Ray, in 1883. Museum number, 89902.

Fig. 7. Kotzebue Sound type. The specific marks are the twisted handle, the broad shallow shaft groove, and, notably, the pocket for the index-finger tip-visible on the lower side, but nearly absent from the upper side, and lying directly under the shaft groove. In the examples before noted all the holes for the index finger are to one side of this shaft groove. Collected in Kotzebue Sound, by E.P. Herendeen, in 1874. Museum number, 16235.

Fig. 8. The Rodgers type, so called because the locality is doubtful. In specific characters it resembles Fig. 7. The differences are the three cavities for finger tips in the handle, the shaft groove very shallow and running out before reaching the index-finger cavity, and the delicate hook for the spear shaft resembling those farther south. Since writing this paper two throwing-sticks from Sitka have been seen in many respects resembling this form, but covered all over their surfaces with characteristic Thlinkit mythological figures, and having iron hooks at the lower end of the shaft groove. Collected by Commodore John Rodgers, in 1867. Museum number, 2533.