LITERATURE OF ACTINOZOA. 



343 



cancellated structure. Both these genera are confined to the Car- 

 boniferous period. 



The true relationships of the Auloporidce are uncertain. A close 

 resemblance exists between the adult colonies of Aulopo?-a and the 

 young stages of both Syringopora and Halysites, but it is questionable 



Fig. 223. — a, Portion of Aulop07-a tubteformis, of the natural size; and b, Portion of the same, 

 enlarged (after Goldfuss). Devonian, c and d, Cladochonus {Pyrgia) Michelini, of the natural 

 size, and enlarged (after Milne-Edwards and Haime). Carboniferous. 



if this likeness bespeaks any real affinity to either of these genera. 

 In the stolonal method of gemmation characteristic of the Aulopo- 

 roids we have a marked Alcyonarian feature, and the group may 

 therefore be provisionally placed in the division of the Alcyonaria. 



LITERATURE OF ACTINOZOA. 



" Manuel dActinologie et de Zoophytologie." De Blainville. 1834-37. 



" Histoire des Animaux sans Vertebres," vol. ii. Lamarck. (Ed. 2, 

 1836.) 



" Histoire Naturelle des Coralliaires ou Polypes proprement dits." 

 Milne-Edwards and Haime. 1855-60. 



" Recherches sur les Polypiers." ' Ann. des Sciences Nat.' Milne- 

 Edwards and Haime. 1848-52. 



" Iconographie Zoophytologique." Michelin. 1840-47. 



" Beitrage zur physiologischen Kenntniss der Korallenthiere im All- 

 gemeinen und besonders des rothen Meeres." ' Abhandl. d. Berl. 

 Akad.' Ehrenberg. 1832. 



" Zoophytes." ' Report of the Exploring Expedition under Captain 

 Wilkes.' Dana. 1848. 



" Die Korallthiere des rothen Meeres." Klunzinger. 1877-79. 



