Vermes — Worms. 87 



from the existing S/nroriis, and some remarkable clusters of ringed GALLEEY 

 tubes known as Cornulites. 



The Carboniferous worms contain some tubes from Ireland which 15a Table- 

 are referred to the genus Serpula, while the small coiled Spirorhis case 79. 

 is represented by five species. Serpula is very common in the 

 Jurassic, and includes both the typical adherent species and those 

 in which the oral end of the tube is erect. A series of short, 



-O 



Fig. 148. — a, Spirorhis omphalodes, Goldf. ; b and c, Spirorhis 

 Arkonensis, Nich. Devonian : Arkona, Canada. 



slightly curved, free tubes are referred to the genus Ditrypa, and 

 some dense clusters to Galeolaria. The Cretaceous worms resemble 

 in their general characters those of the preceding period, but three 

 new types should be noticed. One is the Terehella'^. Lewesiensis 

 (Mant.), represented by the tubes in which the worm lived; as 

 these are composed mainly of fish-scales, they were originally 

 described as fossil fishes. A second interesting form is one which 

 burrowed into sponges. The third, known as Talpina, contains 

 animals which drilled passages in the shells of sea-urchins and 

 Belemnites, and which are probably sponges. 



Serpula heptagona, Sby., from the Barton Beds, should be noticed, 

 as the opercula are included in the collection, and thus the genus 

 can be more accurately determined. The coiled tubes known as 

 Vermetus Bognoriensis, Sby., of which two fine slabs are exhibited 

 in the wall-case, may be either Annelidan or Molluscan. 



Among the foreign worms in Wall-case 15a the Eunice from 

 Greenland, the genus Rotularia from the Lower Tertiary, and the Wall-case 

 Pyrgopolon from the Cretaceous, the Eunicites showing the bristles 

 and jaws from the Solenhofen ISlate, and the coiled castings 

 known as Lumlricaria from the same limestone, are most worthy 

 of attention. 



