Dr. H. Woodward — On a Neiv British Homalonotus. 489 



This is a circumstance of some interest, when we remember that an 

 upper bed of our Hangman series at West Challacombe Bay con- 

 tains String ocepliali in abundance, as I have seen for myself. 



The Homalonoti would seem to lie somewhat lower or near the base 

 of the presumed equivalent beds in South Devon, and such appear- 

 ing to be their geological position, it is a question of classification 

 whether the beds shall be regarded as the uppermost of the Lower 

 or lowest of the Middle Devonian. Mr. Etheridge, as regards the 

 Hangman, adopts the latter view. M. Mourlon classes the beds of 

 Burnot with the Lower Devonian. 



Mr. Tawney's Smuggler's Cove list includes " Homalonotus, n.sp. 

 (most like H. Johannis from the Wenlock beds)." With his list the 

 fossils associated with the Homalonoti at the new road would appear 

 to tally, though they are in a bad state of preservation. They 

 include : — 



OrtJioeeras (one specimen). 



Holopella (or ottier ffasferqpo^ with the aperture entire: — 5-whorled). 



Cypricardites ? sp. 



Myalina (small). 



Tentaculites (not common as quoted by Mr. Tawney from Smuggler's Core). 



Chonetes sordida, PMIL, often crowded in certain layers. 



(See additions in postscript this month, p. 528.) 



At Smuggler's Cove, with Mr. Lee, we found in reddish schistose 

 masses slipped from the cliff many casts of Orthis, Spirifera, and 

 Leptcena laticosta. The bed effervesces, being an impure limestone. 



Some Lower Devonian beds are so like some Ludlow Eocks (only 

 red-stained), and with flakes of greenish clay within the gritty layers, 

 as we see in the Usk district with Holopellce and Chonetes, as sorely 

 to try the faith of the most orthodox. 



We can claim no Foreland beds in South Devon, the Meadfoot beds, 

 equivalent to the Lynton, being to all appearance the lowest visible. 



IV. — Note on a new English Homalonotus from the Devonian, 



Torquay, S, Devon. 



By HexNry Woodward, LL.D., F.R.S., F.G.S. 



(PLATE XIII.) 



THE fossil, which forms the subject of our Plate, is a most 

 welcome addition to our list of Middle Devonian fossils,^ and I 

 am much indebted to my friend Mr. Arthur Champernovvne, F.G.S., 

 for the opportunity of describing it. 



This fine Trilobite is rather larger than the celebrated Homa- 

 lonotus delphinocepJialus, Green, from the Wenlock Limestone of 

 Dudley, but although somewhat distorted by slaty cleavage, it can 

 readily be seen that the Torquay fossil is referable to Mr. J. W. 

 Salter's section of Homalonoti with, spines, which he named Burmei- 

 steria. This division includes all those species having the body 

 " elongate, convex ; head triangular; eyes approximate on gibbous 

 cheeks. Glabella distinct, lobeless, sinuous. Thorax slightly- 

 lobed and spinous, as is also the many-ribbed pointed tail. (Type 

 H. Herschelli) Devonian." 



1 See Fostscript to this article with list of additional fossils given on p. 528. 



