DESCRIPTION OF PLATES. Ill 



PLATE 

 XXI. Fig. 1. Scrupocellaria scrupea, p. 24, front; fig. 2, 



back. 

 Fig. 3. Canda reptans, p. 26, front; fig. 4, back. 



XXII. Fig. 1. Scrupocellaria ferox, p. 25, front; fig. 2, 



back; fig. 5, ovicell. 



Fig. 3. Scrupocellaria scruposa, p. 25, &ac&; fig. 4, 

 /rortf. 



XXIII. Fig. 1. Menipea patagonica, p. 22, mode of origin. 

 Fig. 2. Menipea triseriata, p. 22, front ; fig. 3, back ; 



fig. 4, ovicells. 



XXIV. Fig. 1. Scrupocellaria macandrei, p. 24, front; fig. 2, 



back ; fig. 3, radical tube. 



Fig. 4. Beania mirabilis, p. 32, side view of cell ; 

 fig. 5, enlarged view of costa. 



XXV. Fig. 1. Menipea patagonica, p. 22, front; fig. 2, 3, 

 back. 



XXVI. Fig. 1, 2. Menipea patagonica, p. 22, variety. 

 Fig. 3. Cellularia ornata, p. 20, front; fig. 4, 



XXVII. Fig. 1. Cellularia cuspidata, p. 19, front; fig. 2, 

 Fig. 3. Cellularia peachii, p. 20, front ; fig. 4, 

 fig. 5, ovicell. 



XXVIII. Fig. 1. Scrupocellaria diadema, p. 24, front; fig. 2, 



back ; fig. 3, ovicell. 

 Fig. 4. Scrupocellaria cyclostoma, p. 21, front ; fig. 5, 



XXIX. Fig. 1. Dimetopia spicata, p. 35. 



Fig. 2. Dimetopia cornuta, p. 35 ; fig. 3, ovicell. 



XXX. Fig. 1. Halophila jolmstonia?, p. 43, natural size; 

 fig. 2, back; fig. 3, front. 



XXXI. Fig. 1. Bicellaria tuba, p. 42, front; fig. 2, back, 

 with avicularium; fig. 3, occasional mode 

 of connexion of cells ; fig. 4, ovicell. 



XXXII. Fig. 1. Bicellaria gracilis, p. 42, natural size; 

 figs. 2,4, front; figs. 3, 5, back. 



XXXIII. Fig. 1. Canda arachnoides, p. 26, natural size; 

 figs. 2, 4, front ; fig. 3, ZwcA; ; fig. 5, avicu- 

 laria at the lower part of a branch. 



