198 DEVONIAN FAUNA. 



2. Fistulipora P sp. Plate XXIII, figs. 18, 19. 



Description. — Zoarium formed of a very thin layer encrusting crinoid stems 

 and other organisms. About twenty-five cells in a distance of 5 mm. Cells 

 probably opening obliquely. 



Size, — A specimen measures about 20 mm. long and 10 mm. wide. 



Localities. — A specimen from Frankmarsh is in the Barnstaple Athenaeum, one 

 from Barnstaple in the Woodwardian Museum, and one from Saunton Hotel in 

 my Collection. I have observed other specimens, and it does not appear to be 

 uncommon. 



Remarks. — Whether this is more than a young stage or dwarfed encrusting 

 variety of the last species I am unable to say. In the specimens before me the 

 cells seem distinctly smaller and more oblique near the margins of the layer, 

 and it therefore seems better to keep them apart, at least for the present. 



ANNULOSA. 

 1. Order— TUBICOLA, Cuvier(S). 



1. Genus — Cornulites, Schlotheim, 1820. 



Without expressing an opinion as to the systematic position of these fossils, 

 except offering the remark that their resemblance to Spirorbis, as may be 

 seen by the figures given by Hall, seems favorable to their being placed among the 

 Tubicolous Annelids, it may be observed that their presence in the Pilton Beds 

 is not favorable to theory that they are " horns of Cystideans," as no Cystideans 

 occur in these beds. 



1. Cornulites devonianus, Whidborne. Plate XXXVII, figs. 1 — 3. 



1896. Cornulites devonianus, Whidborne. Proc. Geol. Assoc, vol. xiv, p. 377 



Description. — Tubes conical, solitary, straight curved or irregularly flexuous, 

 generally elongate, but occasionally short and rapidly increasing ; apparently 

 unattached. Surface (of cast) crossed by very strong annulations, which usually 

 are broad (about three in a length equal to the width), nearly regular and in 

 the form of consecutively truncated inverted cones, but sometimes are very irre- 

 gular, close and confluent. 



