10 THE VOYAGE OF H.M.S. CHALLENGER. 



1887. Chabry, L., Embryologie normal et teratologique des Ascidies, Journ. de I'anat. et clc la physwl., 



torn, xxiii. pp. 167-319. 

 1887. Davidoff, M. von, Ueber die ersten Entwicklungsvorgange bei Distaplia magnilarva, &c. Ami. 



Anz., Jahrg. ii., pp. 575-579. 

 1887. DOLLEY, Ch. S., On the Histology of Salpa, Pwc. Acad. Nat. Sci. PhilmL, pp. 298-308. 

 1887. Nansen, Fr., The structure and combinations of the histological elements of the central nervous 



system. Bergen's Museums Aarsheretning for 1886, pp. 96-97, 119-120, 141-144, &e. 

 1887. TRAU.STEDT, M. P. A., Dijraphna-Togtets zoologisk-botaniske Udbytte — Kara-Havets Sijipunge 



(Ascidia; Simplices), pp. 419-437, Tab. xxxvi.-xxxix. Kjfbenharn. 



ANATOMY. 



As the three groups of pehigic Tunicata treated in this part of the Report differ 

 from one another considerably in structure, and as, moreover, the section Anatomy in 

 the introduction to Part I. gave a general account of the anatomy of all the Tunicata, 

 it will be better to consider the further structural details under the head of each group 

 separately, than to attempt any general description common to all. Reference may be 

 made for the anatomy of the Pyrosomatidfe to pp. \7 et seq., for the Doliolidse to p. 41, 

 for the Salpidse to p. 55, and for the Appendiculariidse to p. 100. 



