ANATOMY AND PHYSIOLOGY 



Sub-Order &. 



DESMACIDON. See Fig. 264, Plate XIII. 

 RAPHYRUS. See Fig. 265, Plate XIII. 



Sub -Order 5. 



FIG. 



377. DIPLODEMIA VESICULA. A small portion of its com- 

 pound reticulate skeleton, exhibiting the inter- 

 mixture of the spiculo-reticulate skeleton with the 

 hetrospiculate fibrous one. X 108 linear. See 

 also Fig. 273, Plate XIV, for structure of hetro- 

 spiculate fibre. X 175 linear. And Fig. 324, 

 Plate XXIII, for the ovaria. X 83 linear. Page 

 202. 



For 878 see page 289. 



Sub- Order 6. 



DACTYLOCALYX. See Figs. 274, 275 and 276, Plate 

 XV, for skeleton fibre, and Figs. 240 and 241 

 for structure of the skeleton and gennnules. 



Sub-Order 7. 



FARREA. See Fig. 277, Plate XV, for the structure 

 of the fibre and form of the skeleton ; and Fig. 

 311, Plate XXI, for dermal structure. 



ORDER 3. KERATOSA. 



Sub- Order. 1 



379. SPONGIA, Linn&us. Showing the irregularity of the 

 disposition of the keratose fibre. X 50 linear. 

 See also Fig. 261, page 13, for the structure of 

 the fibre. 



