296 



DlClVOSl'ONOID^. 



PLATE XLIX. 



CALATHOSPONGIA, gen. nov. 



Page 155. 

 (See Plates XLVIII, L, LI, LII, LVI, LVII, LX, LXVIII.) 



Calatiiospongia Redfieldi, Hall (sp.). 



Page 155. 

 (See Plate XLVHI.) 



Figure 1. A fragment of a small specimen 

 Waverly group, Jiichjield, Ohio. 



Figures 2, 3. The opposite sides of a specimen which is ^^rtually entire, the 

 apertural portion having been distorted by the vertical compression 

 and rupture of the reticulum. The surface of this specimen has been 

 somewhat abraded on the side shown in fig. 2, and the primary 

 transverse bands of the reticulum are not as clearly displayed as in 

 the example rejiresented on the preceding plate. In fig. 3, the finer 

 supei-ficial net-work is predominant. 



Figure 4. An enlargment of the surface from the same specimen, taken from 

 near the top of the side shown in fig. 3. These figures are from the 

 type-specimen of the species. 

 Waverly group. Harrisville, Ohio. 



CLATIIROSPONGIA, Hall. 



Page 121. 

 (See Plates XIV, XV, XVIII, XXI, XXV, XLIX, L.) 



Clatheospongia abacus. Hall. 



Page 153. 



Figure 5. A nearly complete individual which shows the obconical form of 

 the cup and the great development of the erect vertical and horizon- 

 tal spicular lamellae. 



F'igure 6. A restoration of a segment of the surface showing the relative 

 development of the successive series of reticulating lamellae, Avliich 

 produce a deep fenestration of the outer spouge-wall. 



Figure 7. A restoration showing only the primary vertical and horizontal 

 bands with the marks of subordinate lamellae upon their surface. 



Figure 8. An internal cast showing the aspect of the fossil ^vheu divested of 

 its exterior lanlelhie. 

 Waverl}' group. Warren, ^Pennsylvania. 



I 



