Page 235:
The form described in 1901 by Chevreux (Mém. Soc Zool. Fr. vol. 14, p. 397, figs. 13, 14) from Seychelles seems quite distinct
enough from Stebbing's form to merit a separate specific name. Chevreux himself was half inclined to this view. I propose the
name H. chevreuxi.