CARBONIFEROUS MYRIAPODA OF ILLINOIS. 427 



Euphoberia armigera. 



PI. 34, figs. 2. 4, 8 ; pi. 35, fig. 3. 



Euplioberia armigera Meek and "Worthen, Amer. Joui-n. Sc, (2), xLvr, 25-26 (1868). 



A specimen received from Mr. R. D. Lacoe (No. 1804cd, of his collection, fig. 3) 

 from the Mazon Creek nodules, is nearly complete but appears to lack both extremities; 

 thirty-five segments are preserved, showing a dorsal view of a sinuous body, the lateral 

 spines of one side nearly complete, together with a few of the other side in front; these 

 are slender, gently curved, and do not appear to show any spinnles whatever, though 

 there are here and there possible indications of them, not shown in the figure; the spines 

 are, however, poorly preserved, and the absence of spinnles may be looked upon as merely 

 the accident of preservation. The bod}' is not prominently ridged, and is flattened by 

 jjreservation ; no rugosity of the surface is noticeable. The anterior half is of nearly 

 uniform size, scarcely tapering in front, the segments about twice as broad as long; the 

 posterior half tapers very regularly to less than half the size of the middle, the segments 

 shortening a little. The spines are about half as long as the greatest width of the body. 

 No legs ai*e visible. 



Length of specimen, 75 mm.; greatest breadth, 4.25 mm. 



Besides this I have seen nearly a dozen specimens, most of them received from Mr. R. 

 D. Lacoe, but others from Mr. W. F. E. Gurley, Prof J. S. Newbei-ry and Mr. F. T. Bliss. 

 None of these require special mention, excepting one of those received from Mr. Lacoe 

 under the number 1804kl (fig. 8). This is a portion of the hinder end of the body of 

 unusually lai'ge size, and containing about twenty-nine segments; one remarkable thing 

 is the slight degree to which it tapei's, the diminution in size being altogether confined 

 to the last ten segments, half the diameter being lost in that distance. The segments are 

 nearly twice as high as long, have the subsegments well distinguished, and show the 

 texture of the surface, which appears to have been finely pitted with ti'ansversely arranged 

 somewhat transverse punctures, shown as too circulai- in the figure (fig. 2) . Along the 

 middle line of the body and also next the under edge appear some perhaps wholly for- 

 eign textures, one of which is represented still further enlarged in fig. 4, which are seri- 

 ally arranged and may be mere mineral fillings of spine-scars. Nearly all the subdorsal 

 spines are seen ; they are well heeled, rather slender, arcuate, and pointed, considei-ably 

 longer than the segments. Very many of the legs can be seen, and these are unusually 

 short and stout and incurved ; the enlarged figures show well their division into joints at 

 different parts of the body, from which it would appear that the second joint was not 

 elongated, and on this account I have very much doubted whether this specimen should 

 not be separated from the others as a distinct species. 



Length of fragment, 108 mm. 



Euphoberia granosa. 



PL 34, figs. 5, 6 ; pi. 36, fig. 2. 



Eiqilioheria granosa Scudd., Mem. Bost. Soc. Nat. Hist., nr, 168 (1882). 



To this species I refer several specimens seen since the originals were described, which 



