16 



IV. Holothurioidea. 



Labidopla.r digitata (Montagu) (Syn. Synapta digitata); pelagic larva identi- 

 fied by Baur, 1864; metamorphosis described from pelagic material, 

 Semon, 1888. 



Leptosynapta inhserens (O. Fr. Miiller) (Syn. Synapta inheerens); reared 

 through metamorphosis, Wyv. Thomson, 1862. (It remains uncert- 

 ain, whether it has a pelagic larva, the younger stages not having 

 been noticed in the aquarium, where the rearing took place). 



Holothuria lubulosa (Gmelin); reared to young Auricularia. Selenka, 

 1876. 



Holothuria niyra Peach; reared to young Auricularia, the present author, 

 1913. 



Holothuria floridana Pourtales; reared through metamorphosis, Kdwards, 

 1888 (1909). 



Psolm phantapus Strussenf. ; larva identified, Ihe present author, 1898; 

 reared through metamorphosis, Runnstrom (not yet published). 



"Psolinus brevis" Forbes, (undecided, which species is really meant, but 

 probably a Cucumaria); reared through metamorphosis, Kowalev- 

 sky, 1867. 



Cucumaria Planci v. Marenz. (Syn. Cue. doliolum); reared through meta- 

 morphosis, Selenka, 1876; Ludwig, 1891. 



Cucnmariu frondosa ((iunnerus); young stages reared (partly abnormal), 

 Des Arts, 1910; reared through metamorphosis, Runnstrom (not 

 yet published). 



Cncumaria cchinata \. Marenzeller; reared through metamorphosis, Oh- 

 shima, 1918. 



Cucumaria Normani Pace; reared through metamorphosis, H. G. Newth, 

 1916. 



Cucumaria saxicola Pace; reared through metamorphosis, Newlh, 1916. 



V. Crinoidea. 



Antedon bifida (Pennant); development described, Wyv. Thomson, 1863. 

 Antedon mediterranea (Lamk.); development described, Barrois, 1886, 



1888; Bury, 1888. 



Antedon adriatica A. H. Clark; development described, Seeliger, 1892. 

 Antedon petasus (Dub. & Koren); reared to beginning metamorphosis, 



W. Busch, 1851 1 ); the present author, 1920. 



M The Crinoid from which Busch, 1851, reared the larva to beginning metamor- 

 phosis was probably this species; the statement that the eggs were dropped "wie einen 

 Staubregen" by the ripe female decidedly points to this species, the other Antedo/i-species 

 keeping their eggs on the pinnules until the larva is ready to swim. 



