8 Eck. 
ECHINODERMATA. 
56. Schlumberger, — . Note sur les Holothurid6es da Calcaire grossier. 
Bull. Soc. G6ol. (3) xvi, 6, pp. 437-41-1, 14 woodcuts. 
Dosoriptiou of the plates of the following fossil forms : — Synapta 
eocctna , Sehl. (n. sp.); Ohirodota undulata , Schl. (n. sp.) ; Thyonidium , 
sp. ? ; Stueria , Schl. (n. g.), sole species, S. elegans , Sold. (n. sp.). 
57. Semon, R. Die Entwicklung der Synapta digitata und ihre Bedeut- 
ung fiir die Phylogenie der Echinodermen. Jen. Z. Nat. xxii, i, ii, 
pp. 175-309, pis. vi-xii. 
An adoral band of cilia is present. The extent of the adoral band 
differs in the various groups of Echinoderniatu , and the “Pluteus arms ” 
are not to be considered as homologous throughout. The origin of the 
nervous system is described, the account of the histology being at variance 
with that of Metschnikoff. The larval nervous system forms the nerve- 
ring of the adult. All Echinoderm nervous systems are probably derived 
by precocious segregation from the ciliated bands. A full account of the 
history of the ccelomic sacs and water-vascular system is given. The 
homologies of the tentacular vessels, radial water- vascular canals, and 
pieces of the calcareous ring require to be reconsidered. The coelom does 
not extend into the tentacles. The plijdogeny of the Holotkuria aud of 
the Echinodermata generally is discussed. The Echinodermata are to bo 
derived from an ancestral form, “ Pentactcea” resembling the Pentactula 
larva of Synapta. The Echinoderm classes may be groupod — (1) Angio- 
chirota (Holothuroids) ; (2) Achirota (Echinoids) ; (3) Ctelomachirota 
(Crinoids, Ophiurids, and Asteroids). 
58. Sluiter, 0. Ph. Die Evertebraten aus der Sammlung des Konig- 
lichen Naturwissenschaftlicher Vereins in Niederlaudisch Indicn in 
Batavia. Nat. Tijdschr. Nederl. Ind. xlvii, pp. 181-220, pis. i & ii. 
Echinoderms, pp. 184-220. 
List of species of district, with diagnoses of 12 new species. 
59. Storm, V. Solaster echinatus, n. sp., illigemed Oversigt over de i 
Throndhjemsf jorden fundne Asteroider. Nor. Selsk. Skr. 188G— 1887, 
pp. 58-64, 1 pi. 
List of Asterids found in Throndhjems fjord, and diagnosis of Solaster 
echinatus , u. sp. 
60. Toula, F. Ueber Aspidura raiblana , n. sp. SB. Ak. Wien, 96 Bd., 
1 Abth. pp. 361-369, 1 pi. 
Contains list of Triassic Ophiurids. 
61. Yojgt, Walter. Entocolax ludwigiie in neuer seltsamer Parasit aus 
einer Ifolothurie. Z. wiss. Zool. xlvii, 4, pp. 658-688, pis. xli-xliii. 
A Prosobranchiate Gastropod of the suborder Cocklosyringia , parasitic 
on a Holothurian. 
? 
62. Vuillemin, P. Cidaris grandumis , Goldf., dans lo Muscholkalk 
inferieur. Bull. Soc. Nancy (2) vi, 16, p. vi. 
The first Eohinoid reported from the Trias of France^ 
