ANATOMY, CLASSIFICATION. 
Bry. 3 
Bryozoites, never exhibiting the structure of a nephridium, but having 
the same position as the orifice of the metanephridium in Phylactolaunata , 
and serving, secondarily, for the evacuation of the debris of the degene- 
rated polypides. The development of the ovum is described by the 
author, who considers that all Ectoproctous Brynzoa with a free develop- 
ment, have a larva of the Gyphonautes type. In Bryozoa the ectoderm 
retains the power of formiug a fresh endoderm, or intestinal epithelium* 
Ectoprocta and Entoprocta should be kept in one class. The degenera- 
tion of the Polypidemay be related to the absence of an excretory system. 
The loss of the calyx in Entoprocta is not analogous to the formation of 
“brown bodies” in Ectoprocta. Eulers (5) reviews the above-named 
investigations of Prouho, discussing in particular the openings to the 
exterior ; he briefly indicates how his conclusions bear upon the relation- 
ships of the different types. 
Anatomy and reproduction of TJrnatclla gracilis ; Davenport (3). — 
Nepbridia of Cristatella ; Com (2). — Terminology for the apertures and 
pores in the Cheilo stomata, revised and amended ; Gregory (7). 
Gregory (7) classifies the Cheilostomata as follows : — 
I. Subord. Stolon ata. 
Fam. 1. Aeteklce. 
Fam. 2. Eucratiidce. 
Fam. 3. Ghlidoniidce. 
II. Subord. Cellularina. 
Fam. 4. Cellular iidai. 
Fam. 5. Bicellariidce. 
Fam. 6. Epistomiidce. 
Fam. 7. Catenicellidce. 
Fam. 8. Bifaxariidce. 
III. Subord. Atiiyriata (nov.). 
Fam. 9. Farciminariidce. 
Fam. 10. Flustrida ?. 
Fam. 11. Menibraniporidce. 
Subfam. 1. Membraniporince. 
Subfam. 2. Electrinince. 
Subfam. 3. Lunulitince. 
Fam. 12. Gribrilimdce. 
Subfam. 1. Cribrilinince. 
Subfam. 2. Hiantoporince. 
Subfam. 3. Steginoporince. 
Fam. 13. Microporidce. 
Subfam. 1. Microporince. 
Subfam. 2. Selenarince. 
Fam. 14. Steganoporellidce. 
Fam. 15. Cellaritdai. 
