INVERTEBRATE FAUNA OF SOUTH CAROLINA. 309 



ORDER ACTINARIA. SEA ANEMONES &c. 



Sagartia leucolena Verrill (N. C.) 

 Paractis rapiformis M. Edw. (N. C.) 

 Halocampa producta (Stm.) Verrill (X. C.) 

 Calliactis sol Verrill (N. C.) 

 Aulactinia capitata Verrill (N. C.) 

 Cladactis cavernata Verrill (N. C. ) 

 Cerianthus americamis Verrill (N. C.) 

 Ilyanthus chloropsis (Ag.) Verrill (N. C.) 

 Paranthea pallida Verrill (N. C.) 



ORDER MADREPORARIA. 



[The polypes of this order have tentacles, mostly six or some multiple of six in 

 number. Most corals are formed by animals of this group. They abound in tropical 

 waters ] 



Astrangia danse Ag. (Star coral.) 



Oculina arbuscula Verrill (N. C.) Oculina implicata Verrill (N. C.) 



PROTOZOA. 



[Animals generally of minute size, composed of a nearly structureless, jelly-like 

 substance, having no definite body cavity, presenting no trace of a nervous system, 

 and whose alimentary apparatus, if at all differentiated, is very rudimentary. 



SPONGIDA. SPONGES. 



Microciona prolifera Verrill (N. C.) 



Chalina arbuscula Verrill (N. C.) 



Cliona sulphurea Verrill (N. C.) 



Hircina campana Nardo (N. C) 



Spongia vermiculata var. Hyatt (N. C.) 



Spongelia spinosa Hyatt (N. C.) Spongelia dubia var. foraminosa Hyatt (X.C.) 



Dysidea fragilis Johnston ? (N. C.) 



Doubtless, if the fresh water ponds are examined, other sponges will 

 be found growing in quiet spots on submerged branches, stones, &c. 

 The student is referred to an article by H. J. Carter, in the Ann. and 



