134 
SUBORDER II.— ALCYONARIA. 
17. G. Pterogorgia pectinata. — Reddish; one to one and a half feet 
high and broad ; stem dichotomising and bearing above nearly simple erect j 
branchlets, long and pectinately arranged, one and a half lines thick, nearly 
terete, siibverrucose; polyps sublateral, with a flat medial area naked. 
The East Indies. — Lamarck. 
18. G. Pterogorgia ochrostoma (Ehrenherg,) Dana. — Rose-red, with 
the margin yellow ; very densely branched ; branchlets flexuous, not coales- 
cing, subflabellate, rather rigid, branchlets compressed, shorter, a little broader, 
and with somewhat larger polyps than in the G.Jlabellum. I 
19. G. Pterogorgia leucostoma [Ehrenberg,) Dana. — Rose-red, with a 
whitish margin ; a foot high and nine inches broad ; densely ramulous, sub- | 
flabellate, not coalescing, rigid ; branches flexuous, nearly terete, half a line 
thick, margin polypiferous. 
20. G. Pterogorgia sarmentosa {Esper). — Pale yellowish; large; lax 
paniculate, branchlets slender (half a line), and flexuous, nearly terete, often 
sulcate ; polyps lateral, often in a single series, margin of branchlets uneven, ; 
with obsolescent verrucse ; cortex thin. 
Mediterranean. — Esper. i 
21. G. Pterogorgia setacea (Pallas). — Whitish; simple, rigid, rarely ' 
with a single branch ; surface subverruculose, verruculae minute (one-third of r 
a line) and obsolete, numerous and crowded, mostly on two opposite sides, , 
w’ith a narrow naked interval between. f j 
The American Seas, Pallas. — Laguayra, S. A., Z. Collins. j! 
Subgenus II. — GOEGONIA. || 
Polyps retractile ; when contracted, surface of zoophytes either ! 
smooth or verrucose, with the verrucae, when any, unarmed with f 
spicula or scales. 
A. Cortex thin, less than half a line in thickness. Polyps closely scattered. ] 
I. Flabellate, throughout reticulate, without any free branchlets. i 
22. G. flabellum. 25. G. umbella. 
23. G. clathriis. 26.\ G. ventilabrum. 
24. G. reticulum. 27. G. verriculata. 
II. Flabellate ; in part reticulate or not at all so — not pinnate. 
28. G. umbraculum. 31. G. stricta. 
29. G. cancellata. 32. G. retellum. 
30. G. venusta. 33. G. tamarix. 
