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SPONGIIDA. 501
KENT, W. S. On a new anchoring Sponge, Dorvillia agariciformis.
M. Micr. J. 1870, pp. 293-295.
LEIDY, J. Remarks on some curious Sponges (Hyalonema,
Euplectella, Pheronema). Am. Nat. iv. p. 17 et seq.
MIKLUCHO-MACLAY, N. Ueber einige Schwamme des nordlichen
stillen Oceans und des Eismeeres. Ein Beitrag zur Morphologic
und Verbreitung der Spongien. Mem. Peters. 1870.
Contains descriptions of several new forms, with remarks also on the morphology
of sponges in general.
. Bemerkungen zur Schwammfauna des weissen Meeres
und des arktischen Oceans. Bull. Petersb. June 1870,
pp. 203-205.
SCHMIDT, O. Grundziige einer Spongienfauna des atlantischen
Gebietes. Mit sechs Tafeln. Fol. Leipzig : 1870.
This important work, extensive as it is, does not profess to be an exhaustive
monograph of the subject. It deals almost exclusively with the
siliceous sponges, Hackel being, as is well known, at present occupied with
a special monograph of the calcareous forms. It comprises:—I. Considerations
relative to classification, viz.:—a, typical forms and variability of the
spicules ; b, the fibrous networks and arrangement of the hard parts; c, analogical
and homological structures. II Special description of the sponges
occurring in the region of observation, many of which are only noticed
generically. To this part is appended a table of comparison between Bowerbank's
British species (siliceous and horny) and those of the author. III.
Results relative to geographical distribution and to classification. A table
of geographical distribution is given, as likewise an embodiment of the
author's ideas as to the natural classification of sponges, in the form of a
genealogical tree of the various families.
. Das natiirliche System der Spongien. Mitth. Ver.
Steierm. ii. 1870, pp. 261-269.
The substance of this paper is included in the preceding larger work.
STEWART, C. On a new Sponge, Tethyopsis columnifer. Q. J.
Micr. Sc. 1870, pp. 281, 282.
VAILLANT, L. Note sur la disposition des pores ou orifices afferents
dans la Cliona celata. C. R. lxx. 1870, pp. 41-43.
Translated Ann. N. H. (4) v. pp. 146-148.
WRIGHT, E. PERCEVAL. Notes on sponges.—1. On Hyalonema
mirabilis, Gray. 2. On Aphrocallistes bocagei, sp. nov.
3. On a new genus and species of Deep-sea Sponge. Q.
J. Micr. Sc. 1870, pp. 1-9.
Geographical Distribution.
The following species are given by O. Schmidt (op. cit.) as occurring on
both sides of the Atlantic :—
Aphrocallistes bocagei, Corallistes polydiscus, ChondrUla nucula, Aplysina
avophoba, Siphonochalina densa, Papillina suberia, Desmacella johnsoni, Des-