98 ! INVERTEBRATE ANIMALS. 
rod” (Virgularia mirabilis), which occurs not very rarely in 
British seas. Virgularia occurs in the form of a long rod- 
shaped body of a light flesh colour, supported upon a calcareous 
rod (sclerobasis), somewhat like a knitting-needle, which is 
covered by the coenosarc. From the ccenosarc are given out 
lateral processes, each of which bears numerous polypes (fig. 
38). Closely allied to Virgularia is the “ Cock’s-comb” (Pen- 
Fig. 38.— Pennatulidz, 
Virgularia mirabilis, 
@ A portion of the 
stem in the living 
condition enlarged; & 
Fig. 37-—Pennuatula phosphorea. Portion of the stem in 
(After Johnston.) its dead condition. 
natula) ; but in this the lower end of the ccenosarc is naked 
and fleshy (fig. 37), and the polype-bearing fringes are con- 
siderably longer, giving the whole organism very much the 
appearance of a feather. 
Another family of the A leyonaria is represented by the so- 
called “‘ Organ-pipe corals,” of which 7xdipora musica is a well- 
known example. In this there is a well-developed scleroder- 
mic coral consisting of numerous cylindrical tubes, which are — 
