There are 699 paralectotypes., including MCZ 76054 and USNM 420133.
The captioned illustration (Maynard 1920:pl. 25, fig. 5) was published prior to the text. The taxon thus dates from the publication of the name in the caption accompanying the illustrations, not from the subsequently published text (Article 12.2.7, ICZN, 1999:17). The date of publication is
Maynard (1921a: 127) reported that of 700 specimens examined, only 12 were living.