16 



IV. Holothurioidea. 

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

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



Semon, 1888. 



Leptosynapta inhserens (0. Fr. MiiUer) (Syn. Synapta inhxrens); 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 tubulosa (Gmelin); reared to young Auricularia. Selenka, 

 1876. 



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



1913. 

 Holothuria floridana Pourtales; reared through metamorphosis, Edwards, 



1888 (1909). 

 Psolus phantapus Strussenf.; larva identified, the 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. 

 Cucumaria frondosa (Gunnerus); young stages reared (partly abnormal), 



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



yet published). 

 Cucumaria echinata v. Marenzeller; reared through metamorphosis, Oh- 



shima, 1918. 

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



1916. 

 Cucumaria saxicola Pace; reared through metamorphosis, Newth, 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, 18511); the present author, 1920. 



1) 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 Aniedon-species 

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



