FIGURE 15. Philobrya quadrata. A, I in The Genus Philobrya J.G. Cooper, 1867 (Bivalvia: Philobryidae) In Patagonia And Adjacent Antarctic Waters

FIGURE 15. Philobrya quadrata. A, I: Philippiella quadrata original figures by Martens & Pfeffer (1886: figs. 6a, b), B, C, M: specimens from South Georgia (B, C: neotype, MACN-In 44471, M: MACN-In 44472), D‒H, K, L, N‒R: specimens from Burdwood Bank (D‒F, N: MACN-In 44474, G, H, K, L, O‒R: MACN-In 44475), J: Philippiella ungulata original figure by Martens & Pfeffer 1886: fig. 7). A, B, D‒G: outer views right valve (A, B: with periostracum, D‒G: without periostracum), C, H: outer views left valve (C: with periostracum, H: without periostracum), I‒K: inner views left valve, L: inner view right valve, M: brooded embryo removed from the demibranch of an adult specimen, N, Q, R: hinge plates left valve (N: specimen of 3.3 mm L, Q: specimen of 1.9 mm L, R: specimen of 3.0 mm L), O, P: hinge plates right valve (O: specimen of 1.9 mm L, P: specimen of 3.0 mm L). Scale bars A‒L: 1 mm; M: 100 µm; N‒R: 500 µm.