If one compares the tarsal comb of a Psammochares with the front tarsus of a typical Anoplius he will see that in the Psammochares there is a spine from the middle of the second tarsal joint about as long as that from the tip of the first or tip of second joint, while in the typical Anoplius there are spines along the first joint and at the tip of the first and second joints that are fairly long; there is none from the middle of the second joint at all comparable to them.