EDITOBIAL NOTES. 



Tins volume contains Parts XXIII., XXIV., and XXV. of the Zoological 

 Series of Reports on the Scientific Results of the Expedition. 



Part XXIII. — The Report on the Copepoda is the Second Report on the 

 Extomostraca collected during the Expedition, from the pen of Dr. George 

 Stewardson Brady, F.R.S. It will be remembered that his Report on the 

 Ostracoda was published in 1880, and forms Part III. of the Zoological Series. 



Part XXIV. — The Report on the Calcarea is by Dr. N. Polejaeff, of the 

 University of Odessa, and a distinguished pupil of Professor Franz Eilhard 

 Schulze. Dr. Polejaeff has also undertaken the Report on the Ceraospoxgi^e, 

 and it is expected that this Second Memoir will be ready for publication in a 

 few months, as the investigation is already in a forward state. 



The other gentlemen engaged in the preparation of Reports on the 

 Porifera are Professor F. E. Schulze — the Hexactinellida ; Professor TV. J. 

 Sollas — the Tetractixellida ; and Mr. S, O. Ridley — the Moxactixellida. 



Part XXV. forms the first instalment of Dr. P. P. C. Hoek's Report on 

 the Cirripedia collected during the Expedition. A Supplementary Memoir, 

 dealing with the Anatomy of the Group, will be published in the course of a 

 few months. 



Part XXII. — The Report on the Foramixifeka, by H. B. Brady. Esq., 

 F.R.S. — is now nearly printed off, and will be issued shortly as Volume IX. 



Zoology. 



John Murray. 



CHALLENGER OFFICE, 32 QUEEN .STREET, 



Edinburgh, 28th December 1883. 



