PLATE III. 
Crisia. — Idmonea. 
Figure 1. — ■ Crisia acuminata, ..... 
la, part of a branch, front view ; 1 b, lc, Id, terminal 
processes, ..... 
„ 2. — Crisia lioldsworthii, ooecium, .... 
„ 3. — Idmonea australis, ..... 
3a, front ; 3 b, back, .... 
„ 4. — Idmonea eboracensis, ..... 
4a, front ; 4 b, ocecial dilatation, 
4c, back, ...... 
„ 5. — Idmonea jissurata, . ... . 
5 a, front of young portion of zoarium ; 5b, older 
part ; 5c, back, .... 
Diam. Page 
5 
x 25 
x 25 6 
12 
x 25 
12 
x 25 
x 50 
14 
x 25 
