FIGURE 1 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand

FIGURE 1. Isognomon spathulatus, lectotype (NHMUK 20130275/1; 39 mm). A—Original illustration by G.B. Sowerby II of a syntype here selected as lectotype (Reeve, 1858: pl. 6, fig. 28); B—H. Cuming's original label with the locality ("Isle of Negros") glued to the specimen box with markings by other scholars; C—Exterior of the right valve; D—Exterior of the left valve; E—Interior of the left valve; F—Interior of the right valve. Scale bar: 10 mm.