442 Dr. H. Woodward — Crustaceans and Myriopods 



saddle, the smooth margin of which passes under the succeeding 

 segment ; at the lower lateral rounded border of each saddle- 

 shaped plate the base of a round spine (?) is seen broken off; 

 occasionally the base is double. Some of the saddle-plates have 

 a third additional ridge upon them. Below each saddle-shaped 

 dorsal plate are two smaller ventral plates,^ also ridged, to each of 

 which a pair of slendei', six- or seven-jointed walking-limbs is 

 articulated. The saddle-plates of the segments nearest the head 

 have a delicate crenulation along their raised margins. The head 

 has two rounded lobes, which are probably the eyes, although 

 the facets are not very distinct. The last segment (telson ?) is 

 smaller than the rest and appears to be somewhat semicircular in 

 form; quite 15 to 20 pairs of jointed ambulatory appendages can be 

 made out, two pairs being attached to each double segment. 



Measured around the curve of the coiled-up specimen the body is 

 8 centimetres in length ; the segments 10 mm. deep and about 8 mm. 

 long; the walking-legs are about 10mm. in length. There is 

 a second specimen in Mr. Whalley's collection, with counterpart 

 (broken off at each end), which measures 3 cm. in length. 



Euphoheria Broicnii is closely related to E. armigera, described 

 by Messrs. Meek & Worthen in their great work on " The 

 Geology and Paleeontology of Illinois, U.S.," 1868, vol. iii, 

 p. 556, figs, a-d, from the clay-ironstone nodules of the Coal- 

 measures, Grundy County, Illinois, reproduced in our PI. Ill, 

 Geol. Mag., 1871, p. 104. 



Locality and formation : from the Soapstone bed, Colne Hill. 

 Lower Coal-measures. In the collection of Mr. Peter Whalley. 



2. Xylobius moniliformis, H. "Woodw., sp. nov. 

 (Text-fig. 4.) 



The earliest recorded examples of Chilognathous Myriopods met 

 with in a fossil state were discovered by Sir William Dawson in 

 the hollow trunk of a still erect Sigillaria, in a bed of coal on the 

 South Joggins Coalfield, Nova Scotia, and described by him in the 

 Quarterly Journal of the Geological Society of London in 1853, 

 vol. ix, p. 58. A fuller description by the same author followed 

 December 15th, 1859 (op. cit., vol. xvi, p. 268). These terrestrial 

 Myriopods have also been found in the Coal-measures of Illinois by 

 Messrs. Meek & Worthen, and in the Coal-measures of Kilmaurs, 

 near Glasgow, by Mr. Thomas Brown. Some of these forms were 

 described and figured by me in the Trans. Glasgow Geol. Soc, 1866, 

 vol. ii, p. 235, pi. iii, figs. 11-13. 



In 1867 Mr. Binney exhibited fossils collected by Mr. Joseph 

 Tindall, of Huddersfield, from the Lower Coal-measures near that 

 town. One of these was a remarkably good example of Xylobius 

 in a nodule of clay-ironstone, having about 46 well-preserved 

 articulations to its body. This specimen showed the segments to 

 have been ornamented with transverse, finely undulating lines, as 



1 Not clearly shown in the iigui-e. 



