1 Spong, 
SPONGIIDA. 
BY 
Stuart 0. Ridley, M.A., F.L.S., F.R.M.S. 
Chief Works on Recent Sponges. 
1. Carter, H. J. Ueport on Specimens dredged up from the Gulf of 
Manaar, and presented to the Liverpool Free Museum by Capt. W. 
H. Cawne Warren. Spongiida. Ann. N. H. (o) vi. p. 35, pis. iv.-^vi. 
Abbreviated Report in P. Liverp. Soc. xxxiv. p. 273. 
The references given below are to the main Report. 
2. CzERNiAVSKY, V. Littoral Sponges of the Black and Caspian Seas. 
Bull. Mosc. liv. pt. ii. pp. 88 & 228. 
In Russian, with Latin diagnoses. Completes the short account given 
in the paper No. 5 of Zool. Rec. xv., adding the systematic descriptions 
of the genera and species there mentioned, and those of some now genera 
as well {vide infra). To the names of some of the now varieties are 
appended the words “fere bona species.” References will be given 
below to those species which are not mentioned in the former paper. A 
bibliography is added by the author to the descriptive portion, together 
with a chapter on the distribution, mutnal relations, and spicules of the 
genera noticed. 
3. Duncan, P. M. On a Parasitic Sponge of the Order Calcarea. J. R. 
Micr, Soc. iii. p. 377, pi. x. 
4. Dybowsky, W. Studien iiber die Spongion des Russischon Reiches, 
mit besonderer Beriichsichtigung der Spongien-fauna des Baikal- 
Sees. Mem. Petersb. xxvii. No. 6, 4 pis. 
5. Keller, C. Neue Coelenteraten aus dem Golf von Neapel. Arch. 
mikr. Anat. xviii. p. 271, pis. xiii. & xiv. 
b. Kent, W. S. Manual of the Infusoria : including a description of 
all known Flagellate, Ciliate, and Tentaculiferous Protozoa, British 
and Foreign, and an account of the organization of the Sponges. 
London : 1880, 4to, parts 1-3, pis, (not yet completed). 
Pp. 143-194, pis. vii.-x., are devoted 'specially to the Sponges, which 
