N'aviciddcea.] infusorial animalcules. 313 



AcTiNocTCLUs MercuHm. — Large ; no septa ; twenty-six rays. 

 Diameter l-432nd. Island Tjorn. 



A. Pallas, with twenty-seven rays. Diameter 1 -288th. Bermuda. 



A. /S'«^«;vms, with twenty-eight rays. No septa. Diameter 1 -432nd. 

 Cuxhavcn. 



A. Terra, with twenty- nine rays. Mouth of the Scheldt. 



A. Venus, with thirty rays. Diameter l-216th. Bermuda. 



A. Vesta, with thirty-one rays. Diameter 1 -336th. Bermuda. 



A. Uranus. — No septa; thirty- two rays. Diameter 1 -360th. 

 North Sea. 



A. Achar-nahr, mth thirty-three rays, alive. Hamburg. 



A. Aldeharan, with thirty-four rays, alive. Hamburg. 



A. Antares. — No septa; thirty-five rays. (l-288th.) North Sea. 



A. Aquila. — No septa; thirty-six, rays. Alive at Cuxhaven. 

 1 -360th. 



A. Arcturus, with thirty-seven rays. Alive at Hamburg. 



A. Betegose, with thirty-eight rays; no septa. (l-360th.) 

 Cuxhaven. 



A. Canopus, thirty-nine rays. (l-264th.) Bermuda. 



A. Capella, iovij vajs ; no septa. (1-2 88th.) Cuxhaven. 



A. Fomel-hot, forty-one rays. Alive at Hamburg. 



A. Lyra, forty-two rays. Alive at Hamburg. 



A. Regains, forty-four rays. Same locality. 



A. dives. — No (?) septa; rays fifty-two. (l-360th.) Fossil 

 Greek marl. 



A. Opulentm. — Rays fifty-five. Found at Antwerp, &c. 



A. Crcesus. — Rays fifty-five. Alive at Hamburg. 



A. PanheJios. — Large ; no septa ; hundred-and-twenty very fine 

 rays. (1-1 80th. ) Mouth Elbe. 



A. velatus. — Septa and rays six ; disc loosely cellular ; surface as 

 if overspread by a delicate and finely dotted membrane ; resembles 

 A. hiternarius. (l-372nd.) Virginia. 



Genus Actinogontum, (Elu-.) — -Prismatic, not in chains ; tcstules 

 sub-orbicular, with seven, or many (?) angles. 



A. septenariiim. — With seven angles. Found fossil in earth from 

 Barbadoes, along with numerous Polycystinea). 



Y 



