PENNATULA, 193 
Polypes on bipennated wings. 
Polypidom plumous. Pennatuta. 
Polypidom virgate. Vireunarta. 
Polypes unilateral, sessile. : 
Polypidom linear, elongate. Pavonarta. 
Family II. Polype-mass fixed, arborescent ; the axis covered 
with a thick cretaceo-gelatinous celluliferous crust ; 
polypes scattered over the whole surface. Gorcontaps®. 
Cells for the polypes immersed. Gorconta. 
Cells subpedunculated, protruded. Prrimnoa. 
Family III. Polype-mass fixed, coriaceous or somewhat 
carnous, without any distinct axis, but strengthened 
by variously-disposed calcareous spicula; polype-cells 
subcutaneous, scattered over the surface. ALCYONIDA. 
Polypes aggregate. ALCcYONIUM. 
Polypes segregate. Sarcoprcryon. 
Famity PENNATULIDA. 
Genus XVI. PENNATULA, Cuvier. 
Gen. Char. Polype-mass free, plumous, the shaft subcylindrie, 
naked beneath, pennated above; pinne two-ranked ; spreading, 
flattened, and polypiferous along the upper margin.—Johuston. 
O 
