FIGURE 4. Philobrya atlantica. A in The Genus Philobrya J.G. Cooper, 1867 (Bivalvia: Philobryidae) In Patagonia And Adjacent Antarctic Waters

FIGURE 4. Philobrya atlantica. A: syntype (USNM 97057), B‒K: specimens from Santa Cruz Province (B‒F: MACN-In 44414, G‒K: MACN-In 44415). A‒E: outer views right valve (A‒D: with periostracum, E: without periostracum), F: outer view left valve (without periostracum), G: inner view left valve, H: inner view right valve, I: brooded embryo removed from the demibranch of an adult specimen, J, K: hinge plate of a 4.2 mm L specimen (J: left valve, K: right valve). Scale bars A‒H: 1 mm; I: 100 µm; J‒K: 500 µm.