FOSSIL ANNELIDANS. 3o7 
traces of tlieir existence, except the holes they 
perforated, and the Httle accumulations of sand 
or mud cast up at the orifice of these perfo- 
rations; in a preceding chapter* we have noticed 
examples of this kind. We have also abundant 
evidence of the early and continued prevalence 
of that order of Annelidans, which formed shelly 
calcareous tubes, in the occurrence of fossil Ser- 
pulre in nearly all formations, from the Tran- 
sition periods to the present time. 
SECTION 11. 
Second Class of Articulated Aimnals, 
FOSSIL CRUSTACEANS. 
The history of fossil Crustaceans has been hitherto 
almost untouched by Palaeontologists, and their 
relations to the existins: Genera of this orreat Class 
of the Animal Kingdom are too little known to 
admit of discussion in this place. We may judge 
of their extent in certain Formations, from the 
fact, that in the cabinet of Count Munster, there 
are nearly sixty species collected from a single 
stratum of the Jurassic Limestone of Solenhofen. 
* See note at page 260. 
