96 Cinciuiiati Society of Natural History. 



The first species lias been found at Connersville, Indiana, 

 by Mr. A. C. Benedict, and the second at Richmond, Indiana, 

 by Dr. C. E. Beecher, of Yale College Museum. The latter 

 gentleman has furnished the following statement as to the 

 size of the specimen, which is in two pieces, and evidently 

 does not represent the full length. One piece is 13 inches 

 long, 25 8 inches in diameter at the larger, and 1^8 inches at 

 the smaller end. The other is \'-,)'{ inches long, xY^ inches in 

 diameter at the larger end, tapering to a flattened extremity 

 }i ^y H inches. Its total length must have been over 32 

 inches. 



Class. — AcTiNozoA. 



A division of the CcELKNTKRata, comprising the sea 

 anemones, corals and allied forms, in which the mouth opens 

 into an oesophageal tube, which, in turn, opens into the gen- 

 eral body cavity ; the oesophagus separated from the body 

 wall by an intervening space, which is divided into a series of 

 compartments by radiating vertical partitions, to the faces of 

 which the reproductive organs are attached. (Nicholson, 

 Man. of Paleont., vol. i, 1889, p. 240.) 



The forms may be simple, like a sea-anemone, or composite 

 like a coral. They may increase in size in various ways : ist, 

 by lateral gemmation or budding; 2d, by calicular gemma- 

 tion ; 3d, by internuiral gemmation; 4th, by basal gemmation, 

 and 5th, by fission or division. The classification of the 

 group is tentative. The members have been arranged under 

 four sub-clas.ses, but Nicholson (Ibid., p. 256,) arranges them 

 under three, viz: Zoanthakia, Alcyonaria and Ctkno- 

 PHORA. The first two of these are represented in the Cincin- 

 nati Group. To the.se .should probably be added Monticu- 

 ijPORoiDiCA, which is here regarded as Calenteratal. This 

 group is now entirely extinct. Lack of knowledge of the soft 

 parts of the animal renders it impossible to place it with cer- 

 tainty. It has by some authors been transferred bodily to 

 the Polyzoa; and by one it has been split up in such a way as 

 to be part Coelenteratal, part Polyzoal. In the latter case, 

 unfortunately, many genera, seemingly closely allied, have 

 been widely separated. 



