NOTES AND MEMORANDA. 
Haeckelina, a new gigantic Moneron— The arenaceous 
Foraminifer described under the name of ‘ Haeckelina’ in 
the last number of the ‘ Jenaische Zeitsherift,’ by Dr. Emil 
Bessels, is, we understand from Dr. Carpenter, identical 
with his form of the Astrorrhiza of Sandahl noticed by him 
in the ‘ Proceedings of the Royal Society,’ June 17th, 1869. 
The Tabulata not Hydroids.—A memoir may be shortly ex- 
pected from Mr. Moseley, of the Challenger expedition, on 
the structure of Heliopora and other Tabulata, the result 
of his studies of these organisms in the living and fresh 
state. The result of these investigations is to show that 
the Tabulata are peculiarly modified (degenerate) Alcyon- 
arlans, with a compact stony (instead of a_ spiculate) 
skeleton. 
Moller’s Diatom Slides.—Herr Moller, of Wedel, the well- 
known preparer of diatoms, proposes to publish by sub- 
scription his methods of preparation. His Typen-platte and 
Proben-platte are remarkable specimens of ingenuity. 
Proceedings of Societies—Owing to the pressure of important 
memoirs, we are compelled to defer till our next number a 
large accumulation of Reports of Societies, including the 
Dublin Microscopical Club, Medical Microscopical Society, 
Liverpool Medical Institution, &c. 
