SKELETOMUSCULATURE OF TRUNK SEGMENTS AND THEIR LIMBS IN SPELEONECTES TULUMENSIS (REMIPEDIA)

We describe the skeletomusculature of the trunk segments and their Lim bs, which power swimming (Kohlhage and Yager, 1994). Contrary to previ ous descriptions, the peduncle is composed of two podomeres, the coxa and basis. Except for the hinge lines adjacent to the coxa, all are al ong the anterior margin, making the muscles that pass across them flex ors; extension is either passive or a result of hydrostatic turgor. Re mipedian trunk musculature falls comfortably within the crustacean pat tern.