FIGURE 2. Test features of <i>Microcyphus ceylanicus</i> (WUSL/ER/87): A, aboral view; B, oral view; C, lateral view; D, ambital ambulacrum; E, ambital interambulacrum; F, oblique view through peristome showing an auricle D and E whitened with ammonium chloride.
Arachchige <i>et al.</i> 2019. An annotated species list of regular echinoids from Sri Lanka with notes on some rarely seen temnopleurids. <i>Zootaxa</i> 4571(1): 35–52.
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