f 



PLATE 40. 



Fig. 1. 534. 1. C.VLLOl'ORA KI.F.GANTULA. ( Pag. 144.) 



1 a. Thj base of a specimen, showing numerous divrigiiig stems wliicli are inegulaiiy branclieil. 



1 6. A coiitiMuaiion of some of Ihe luanelie.s of tlie last specimen, sliowing an iuilividual of Cladoiioia mul- 

 lipora, altaclicd and growing from the stems of this coral. 



1 c. A fragment showijig Ihe eirenlar openings uneiimilly liistriluited over the surface. 



1 rf. A smaller liifurcating hraneh, liaving tlie cells more evenly distributed. 



1 c. A fragment showing the hollow ti'rminations of the branches. 



1 /. A fragment enlarged where there are no circular ajiertures on one .side, a striated or minutely cellular 

 surface alone existing. The lransvcr.se section of the stem in the aimexe<l tignre \f\ shows that tile 

 increase of growtli was made mostly on one side, and this side is the one on which the tubular cells 

 exist, while that side represented in 1 / has increased very little. 



\ g. A fiagment having a tortuous or irregular form, caused by contraction from the obliteration (>r cica- 

 trizing of the Ci'U apertures, and consri|uent cessation of growtli at these points. 



1 g t. Magnilied porliims from the surface of 1 g. 



1 A. An enlargement at one of those ]ioints where the growth has ceased, .ind the intercellular space appears 

 to be solid or simply striated njion the surface. 



1 t. An enlargement of 1 c, showing the irregular distribution of the apertures of the cells. 



1 k. A similar enlargement where the cells are in contact. 



1 /. An eijlargcmeiit showing the stellate apertures, with another figure \ I \ somewhat more highly mag- 

 nilied than the preei'diug. 



1 m. An oblique section of a stem enlarged. 



1 n. An enlarged porliou of the section of another .stem, showing the transverse septa crossing the intercel- 



lular spaces, with a single tubular cill crossed by several septa. 



Fig. 2- 535. 2. Callopora Florida. (Pag. 146.) 



2 a. An enveloiiing mass, consisting of .several distinct layers, wliich, at the commencement of growth, at- 



tached itself to a branch of C. eleguiilula. 

 2 (i. A portion of the surface enlarged, sin wing the form of the apertures and of the intercellular spaces. 

 2 c. A i)ortion of a more perfect specimen, showing the elevated points at the angles of the cells. 

 2 d. A section enlarged, showing the tubular structure, its connexion with C. elcganlula, and the surface of 



C aspera in its connexion with the other two, 

 2 e. A fragment giving some aii|icaranee of branching in a palmate form. 



2 /. A section showing the septate character of the intercellular spaces. 



Fig. 3. 533. 3. Callopora laminata. (Pag. 146.) 



3 a. The surface showing the openings of the natural size. 



3 6. A section showing its mode of growth in concentric lamina'. 



3 c. The lower surface, slnn\iiig thi' eoiu'entric striated membranous covering. 



3 d. A portion of the surfa(M> enlarged, showing Ihe form of Ihe mouths of tiie cells. 



3 e. A section enlarged, .showing the vertical tubular cells and transverse septa. 



Fig. 4. 537. 4. Callopora aspera. (Pag. 147.) 



4 u. A fragment of this species, enclosing in its lower part a crinoidal column, and in the upper being liollow 



and expanding laterally. 



ih, c. Sections of till' two extremities. id, c. The upper extremities of two stems of this coral. 



4 f. A lateral view of the termination of a stem wdiich is a])parently .solid throughout, but consisting of en- 

 veloiiing laminie which ceased to extend in some parts while they were added to parts of the stem 

 adjoining. 



4 g. An enlarged ])ortion, showing the apertures Of the cells and the intercelUilar .spaces where the surface 

 is partially worn. 



4 h. An enlarged portion where the minute points surrounding the cell are very conspicuous, leaving the 

 cells scarcely visible to the naked eye. 



4 i. A transverse section of a stem enlarged, showing Ihe columnar character and septate interspaces with 

 open tubular cells. 



Fig. 5. 53S. 5. Callopora nummiformis. ( P^g- 148.) 



>5 a. The upper surface of the specimen, natural size. 5 b. A portion m.ignificd. 



Fig. 6 a, b. Callopora, n. s. undcscribed. 



