228 DlCTYOSPONGID^^ 



PLATE XV. 

 DICTYOSPONGIA, gen. nov. 



Page 72. 

 (Sm Plates XIV, XVI, XXVn, XXXIII, XXXVI, XXXVIII, XU, XLII. XLIV, XLVl, LV, LVI, LXI.) 



DiCTYOSPONGIA EUMORPIIA, Sp. nOV. 

 Page 75. 



Figure 1. A small, entire individual, showing the fine, square meshes of the 



net- work. 

 Figure 2. A larger, more elongate and slender example. 

 Figure 3. A broader cup with the fine reticulation retained over but a part 



of the surface. 



Chemung group. Wellsville, New YorJe. 



DicnrospoNGiA charita, sp. nov. 



Page 74. 



Figure 4. An entire sponge with the basal tuft retained. 

 Chemung group. Wellsville, New Yorh. 



DiCTYOSPONGIA LOPHUEA, Sp. nOV. 

 Page 74. 



Figure 5. The original specimen, an entire cup showing the elongate rec- 

 tangular quadrules and the. extended basal tuft. 

 Chemung group. Wellsville, New Yorh 



CLATHROSPONGIA, Hall. 



Page 121. 

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



ClATIIROSPONGIA (?) IRREGULARIS, Hall (sp.). 

 Pago 124. 



Figures 6, 7. Opposite sides of the original specimen ; showing the form of 

 the sponge and the character of its reticulation. 

 Chemung (Portage ?) group. ItJiaca, New Yorh. 



DICTYOSPONGIA, gen. nov. 



Page 72. 

 (See Plate* XIV, XVI, XXVII, XXXIIt, XXXVI, XXXVIII, XLI, XLII, XLIV, XLVI, LV, LVI, LXI.) 



DiCTYOSPONGIA SCEPTRUM, Hall (sp.). 



Page 73. 



(See Plates XIV, XVI, XXVII, XXXVI.) 



Figures 8, 9. Opposite sides of a large, somewhat flattened individual, show- 

 ing the characteristic surface reticulation. 

 Chemung group. Friendsliijj, New York. 



