Sentence:  The species "P. wellmanae" would here be synonymised with "P. duncani" if only the holotype test was known. The younger Te Piki test fragments are indistinguishable from "P. wellmanae" (and "P. duncani"), but the <WSD>radioles</WSD> differ from those of "P. duncani" (i.e., "P. wellmanae" is here being distinguished by features not seen in this holotype). Discovery of topotype <WSD>radioles</WSD> will be necessary to confirm the present interpretation and usage. 
Meaning of the word marked with <WSD> tags:  The spine of a sea urchin. (from late 19th c.)