. III. DIST. CHAR. Prototype. 



92. Seminal ( seminale) having the form of a 

 seed or 



Ringent (ringentes) with an oblong, or gaping aperture; the 



upper margin rounded or arched. Flustra. 

 c.)Equal (tequales) Unequal (in&qiiales Conform (conformes) 

 Difform (difformesy &c. &c. &c. 

 The WALLS or PARTITIONS of the Cells (Parietes) 

 c.)Distinct or separate (sejuncti) divided from each other; not ad- 

 hering to, or touching one another. Tubipora musica, T. 27. 

 Madrepora angulosa, T. 34. Ellis. 



United (conjunct i) cohering, but still separable from one ano- 

 ther. Erism. Madr.floriformes, T. 44. f. 5. Derby. Petrif. 

 &.)Common (communes} When the cells are separated from each 

 other merely by a simple partition, continued through the 

 whole mass. Madrtpora retepvra, T. 54. f. 3. Ellis. 

 Proper (propria) When each cell is inclosed by its particular 

 wall, distinct or separable from the other parts of the stirp. 

 Madrepora Car duns, T. 35.fascicularis, T. 30. f. 1. 2. 

 Ellis. 

 &c. &c. 



The Axis of the Cell (Axis) 



a.) Simple (simplex) when it takes no other form but that which 

 arises from the concentration of the lamellae. Madrepvra 

 stellulata, T. 53. f. 3. 4. Ellis. 



Tubular(f M&tt/fff s)when the lamella are united before they reach 

 the centre, which hence takes the form of a cylindric cavity 

 We are not acquainted with any recent Madrepvrte to refer 

 to, as an example of this structure; but we have met with it 

 more than once in fossil species. 

 Cavernous (cavernosus) full of small holes or cells. Madrepora 



favosa, T. 50. f. 1. Ellis. 



Void (inanis) When the lamellae neither unite with one ano- 

 ther, so as to form a tube, nor reach the centre, which hence 



R 



