10 W. A. E. TJssher — The Culm of Devonshire. 



crystalline limestone full of marine organisms, a most improbable 

 gisement for a Myriapod ! The specimen belongs to the Museum of 

 Practical Geology, Jermyn Street, S.W. 



EXPLAJSTATION OF PLATE I. 

 Eemains of Spined Myriapods from the Coal-measures. 



Fig. 1. EupJwberia ferox, Salter, sp. Coal-measures, Sedgley. (Mr. C. Beale's 



Collection.) Head with seven body-segments, a. anterior margin of 



head. p. posterior attached border, o. one of the eyes. (Beale Coll.) 

 ,, 2. A detached head of another specimen showing the eyes and also segments 



with the spines preserved, but much crushed. (Beale Coll.) 

 ,, 3. Another detached head showing the eyes (o), the attachment for the simple 



antennae (/), one of the antennae (a) close to the front of the head. 

 ,, 4. A specimen of Eupholeria with 17 somites united in one animal. This 



specimen shows the legs and the spiracles [sp). (Hy. Johnson Coll.) 

 ,, 5. A portion of the sternum with articulations of 4 legs (l) and the openings 



of 4 spiracles {up) ; also the supposed ' ' basis of branchiae " ( J) . 

 ,, 6. Another specimen showing 5 somites with lateral bifid spines and small 



marginal ones attached. (Beale Coll.) 

 ,, 7. Another form, longer and narrower in proportion than Fig. 6, with 5 somites 



bearing lateral bifid and one trifid spine (possibly a new species ?). (Hy. 



Johnson's Coll.) 

 ,, 8. Terminal segment or ' telson.' (Mr. C. Beale's Coll.) 

 ,, 9. Another and smaller example of Euphoberia with 12 connected somites 



(associated with leaves otNeuropteris), bearing one or more trifid spines 



(possibly a new species) ? 

 ,, 10. Fragment consisting of 4 somites bearing slender curved spines. Carbon- 

 iferous Limestone, Grassington, Yorkshire. (Mus. Pract. Geol.) 

 ,, 11. Ideal section through Euphoberia ferox, showing position of simple and 



bifid spines on tergum {t) and the legs and spiracles [sp) on the sternum 



(.). 

 ,, 12. Two of the legs drawn separately from Fig. 4. 

 ,, 13. Side view of three segments to show the profile of body-rings with their 



ridges and the bases of their spines. The lateral margin [ep) is seen 



to be slightly serrated along the posterior border. 



Mr. Beale's specimens are all from the Clay-ironstone of the Coal-measures of 

 Sedgley, near Dudley. Mr. Henry Johnson's are all from Coseley, near Dudley. 



II. — The Culm Measures of Devonshire. 



By W. a. E. Ussher, F.G.S. 



(Printed with the permission of the Director- General of the Geological Survey.) 



PEOBABLY from the great preponderance of interest attaching 

 to the Devonian rocks of North and South Devon the Culm 

 Measure rocks, constituting the great central table land, have been 

 to a certain extent overlooked. The attempt to subdivide them by 

 ascertaining their different lithological characteristics, and observing 

 to what extent these characteristics are peculiar to definite horizons, 

 has seldom been made. We may, in fact, sum up the literature of the 

 subject with one notable exception — the late Prof. J. Phillips in his 

 " Figures and Descriptions of the Paleeozoic Fossils of Cornwall, 

 Devon, and W. Somerset" — as bearing upon the position of the series 

 as a whole, or calling attention to some special point of interest. 



Phillips, in the work referred to, pointed out the relative position 

 in the series of the most characteristic or important members, such as 

 the limestones, and the cherty beds of the Coddon Hill type. He 



