GRAPTOLITES, . 255 
them to the Pennatulide, or Sea-pens, others to the Sertu- 
lariade.* 
TGn. 85. GRAPTOLITES IN WENLOCK LIMESTONE. 
(Murch. Sil. Syst.) 
Fig. 1.—Grapro.ites LunEnstIs.} 
la.—Magnified view of a portion of the same. 
2.—GRAPTOLITES MuRcHISONI. 
2a.-—Magnified portion of fig. 2. 
GraProuites. Lign. 85.—These curious zoophytes abound 
in many of the Silurian deposits; they consist of sessile 
polype cells, arranged in one or two rows to a flexible stem, 
like the recent Sertularia, or Virgularia. Prof. McCoy refers 
them to the order Hydroida. 
Ina recent state these bodies were gala oeveree with 
a soft, or albuminous mass, studded with polype-cells, dis- 
posed in rows along the margins of the lateral, curved, 
grapple-like processes, as in the zoophytes termed Virgu- 
laria,{ to which one kind bears a great analogy. If two 
Pe inens of the Graptolites Ludensis be placed together, so 
that the elongated smooth edges be in apposition, the united 
‘stems will be seen to offer a general resemblance to the 
axis of Virgularia mirabilis, 
* For a full consideration of this subject, refer to Prof. McCoy’s 
Brit. Paleozoic Fossils. 
+ Ludensis, from Ludlow—to indicate the habitat of the fossils. 
£ See British Zoophytes, pl. xxiv. 
