592 TUNICATA I APPENDICULAR1A. 



further observations are much needed, and any Microscopist, who 

 may meet with Appendicularia furnished with its ' house,' should 

 do all he can to determine its structure and its relations to the 

 body of the animal. * 



* For details in respect to the structure of Appendicularia, see Huxley 

 in " Philos. Transact." for 1851, and in " Quart. Journ. of Microsc. 

 Science," Vol. iv. (1856), p. 181 ; also Allman in the same journal, Vol. vii. 

 (1859), p. 86 ; Gegenbaur in Siebold and Kolliker's " Zeitschrift," Bd. vi. 

 (1S55), p. 406; and Leuckart's "Zoologische Untersuchungen," Heft ii., 

 1854. — For the Tunicata generally, see Prof. T. Rupert Jones in Vol. iv. 

 of the " Cyclop, of Anatomy and Physiology;" Mr. Alder's ' Observations 

 on the British Tunicata ' in " Ann. of Nat. Hist.," Ser. 4, Vol. xi. (I860), 

 p. 153 ; and Mr. Hancock's Memoir ' On the Anatomy and Physiology of 

 the Tunicata' in the "Journal of the Linntean Society," Vol. ix., p. 30U. 



