SUBORDER II.— ALCYOITARIA. 
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Genus IY.— GOEGONIA. 
Gorgonidas forming an inarticulate corneous axis and a sub« 
calcareous cortex ; polyps retractile, surface, on retraction, either 
smooth or verrucose ; verrucse not movable. 
The subgenera are as follows : 
SuBGEN. I, Pterogorgia. Po]yps seriate, or bifarious, with a naked space 
between the ranges of polyps. 
SuBGEN. II. Gorgonia. Polyps irregularly Scattered, not bifarious ; surface 
of zoophyte, after retraction of polyps, smooth or more or less verrucose, 
without exsert spicula. 
SuBGEN. III. Mcricea. Polyps irregularly scattered, surface after retrac- 
tion of polyps verrucose, and verrucas armed with spicula or scales. 
Subgenus L— PTEROGORGIA. 
Gorgoniae with bifarious polyps. 
Arrangement of the Species, 
I. Branches much flattened or two-edged, 
1. G. Pter. quercifolia. 
2. G. Pter. anceps. 
3. G. Pter. citrina. 
4. G. Pter. fasciolaris. 
5. G. Pter. Thornasiensis. 
8. G. Pter. petechizans. 
9. G. Pter. patula. 
6. G. Pter. acerosa. 
7. G. Pter. pinnata. 
II. Branches terete or hut slightly compressed. 
A. Ramose in a plane, or pinnate. 
13. G. Pter. laxa. 
14. G. Pter. rosea. 
10. G. Pter. setosa. 
11. G. Pter. turgida. 
12. G. Pter. violacea. 
15. G. Pter. fusco-purpurea. 
16. G. Pter. sulcifera. 
17. G. Pter. pectinata. 
18. G. Pter. ochrostoma. 
19. G. Pter. leucostoma. 
B. Not ramose in a plane, or simple, 
20. G. Pter. sarmentosa. 
21. G. Pter. setacea. 
III. Appendix. 
G. pustulosa. 
