[MR] This book was published in several parts (Lieferungen=Fascicles) ... 1867: pp. 1-37, pls. 1-8 [Fascicle=Lieferung 1] ... 1867: pp. 37-70, pls. 9-15 [Fascicle=Lieferung 2] ... 1867/(1868): pp. 71-100, pls. 16-25 [Fascicle=Lieferung 3] ... 1868: pp. 101-176, pls. 26-38 [Fascicle=Lieferung 4] ... 1868: pp. 177-288, pls. 39-40 [Fascicle=Lieferung 5] [GP] "The exact dates of publication have been documented by Johnson (1969). All the species described in Semper’s book (1868) do not have the same date of issue. Pages 1-70 and plates 1-15 have been published in 1867 whereas pages 71-228 and plates 16-40 have been published in 1868. Moreover, 3 new holothuroid species i.e. Cucumaria glaberrima, C. crucifer and Thyone rosacea, mentioned in the part published in 1868 must be referred to Semper, 1869." Samyn et al MS