considered as a tubipore. The other references, in illustration of this 

 species, by Gmelin, appear to be incorrect. 



Fascicular tubipore (tubipora fascicularis, Linn.,) described by Fa- 

 bricius as being formed of fasciculated filiform tubes, anastomosing 

 in places, at their sides*: and found in a mineral state on the shores 

 of Gothland, and in the lime-stone mountains, of the size of a sparrow's 

 quill, has not, I conjecture, been yet figured. Nor have I to my 

 knowledge yet seen this fossil. 



Tubipora ramosa, T. pinnata, T. pennicillata, and T, flabellaris, 

 have not yet been seen in a fossil state. Indeed, that minuteness of 

 the parts of which they are composed, their structure, and various 

 other circumstances, demonstrate the little probability there is of 

 these substances being detected, after they have become a stony 

 mass. 



Stellated tubipore, (tubipora stellata, Linn.) is described by Adrian 

 Modeer-f- as a fossil found in the Swedish Island, Gothland. It is formed 

 by distinct tubes, combined in ranges, by many remote platforms ; 

 formed of horizontally disposed plates, with radiating striae on their 

 surfaces, and pierced for the passage of the tubes. This fossil, from 

 the description, and from the plate which is given of it by Modeer, 

 appears to be fully deserving to be considered as a distinct species. 

 That curious species of communication between the several parts of 

 the animal, which has been already noticed in the organ-pipe coral, 

 as being kept up by radiating tubuli, passing through the substance 

 of the horizontally disposed plates, appearing in this species to be 

 carried on by similar pipes passing either through divided plates, or 

 on the surface of the plates, forming on them the radiated strire just 

 described. 



* O. Fabr. Fn. Groenl. 429. f Act. Stockholm, 1788. 4. No. 1. 



