476 ZOOPHYTES. 



often forced through the wall of the stomach into its cavity, and 

 may be seen hanging out of the mouth. The largest of these 

 capsules, in their unprotected state, are about l-300th of an inch 

 in length ; and the thread or dart, in Corynactis Allmanni, when 

 fully extended, is not less than l-8th of an inch, or thirty-seven 

 times the length of the capsule. 1 



1 For the fullest description of these curious bodies, as well as for much other valuable 

 information upon Zoophytes, see Mr. Gosse's " Naturalist's Rambles on the Devonshire 

 Coast." Those who may desire to acquire a more systematic and detailed acquaintance 

 with this group, may be especially referred to the following Treatises and Memoirs: 

 Dr. Johnston's "History of British Zoophytes,'' Prof. Owen's" Lectures on the Compara- 

 tive Anatomy and Physiology of the Invertebrate Animals," Prof. Rymer Jones's 

 'General Outline of the Organization of the Animal Kingdom," Prof. Milne Edwards's 

 "Recherches sur les Polypes," Prof. Van Beneden " Sur les Tubulaires,'' and "Sur les 

 Campanulaires," in "Mem. de 1'Acad. Roy. de Bruxelles," torn. xvii. Sir J. G. Dalyell's 

 u Rare and Remarkable Animals of Scotland," vol. i. Trembley's " Mem. pour servir 

 1'histoire d'un genre de Polype d'Eau douce," M. Hollard's "Monographic du Genre 

 JLc.tinia." in " Ann. des Sci. Nat." Se"r. 3, torn, xv, Mr. Mummery, " On the development 

 of Tubularia indivisa" in " Transact, of Microsc. Soc." 2d Ser. vol. i, p. 28, and Prof. 

 Max. Schultze, "On the Male Reproductive Organs of C amp anul aria geniculata" in 

 ' Quart. Journ. of Microsc. Sci." vol. iii, p 59. 



