PLATE XXVIII. 



PAGE 



Fig. 1. Rhaphidophlus lobatus, vax. horrida : natural size, . . 15,3 



Fig. 2. Rhaphidophlus Jilifer ; natural size, . . . . .152 



Fig. 3. Clathria elegantula ; natural size, . . .. . ' . .149 



Fig. 3a. Portion of the surface, enlarged to show the parchment-like dermal memhrane 

 stretched between the prominent ridges ; x 4. 



Fig. 4. C/fli/m a mancAorato, small specimen ; natural size, . ■ . . 150 



Fig. 5. Clathria lendenfeldi; natural size, . ' . . . 143 



