CARBONIFEROUS MYRIAPODA OF ILLINOIS. 429 



Euphoberia cam. 

 Euj^hoheria carW SciidcL, Mem. Bost. Soc. Kat. Hist., rn, 171 (1882). 



A single additional specimen has come to hand, a large fragment containing all hnt 

 the two ends of the body, stretched in a bent line, presenting a dorsal view of about thirty 

 segments. As in the specimens already described, there is not only considerable diver- 

 sity in the general size of the fi-ont and hinder half of the body, the front half being 

 nearly double the width of the hinder, but the change is relatively rapid, falling upon a 

 few segments near the middle, though this is not so pronounced as in those previously 

 described. The segments are about three times as broad as long, with a slightly greater 

 relative bi-eadth on the front than on the hinder half of the body. The anterior sj)inif- 

 erous half of each segment is heavily ridged, while the posterior is nearly flat, though 

 this condition is somewhat effaced by crushing in the middle of the body. 



Only the basal bosses of the subdorsal series of spines can be seen and these are near 

 together, but in many cases obsciu'e. The lateral series is tolerably complete through- 

 out upon both sides and shows these spines to have been tolerably stout, sharply pointed, 

 a little curved and scarcely so long as the segments; where suitably turned they show 

 an angle near the middle of the front contour, which is all that appears of a spinule, 

 probably broken off; but a veiy considerable, straight, slender needle arises from behind 

 the base of the main spine, in situations favorable for it to be seen, almost half as long 

 as the main spine. No legs are preserved. The whole surface of the body is finely and 

 evenly granulate. 



Length of fragment, 63 mm.; greatest breadth, 9 mm.; least breadth, 5.5 mm.; length 

 of spines, 2.5 mm. 



Mazon Creek, Illinois. Museum of Columbia School of Mines, comminiicated by Dr. 

 J. S. Newberry. 



Euphoberia cuspidata sp. nov. 

 PL 34, figs. 3, 7. 



A single specimen only is known of this species, the head end of which is obscure, and 

 the other extremity broken off. About seventeen segments are shown, preserved in a 

 straight line uj^on a side view. The body tapers forward a little on the three or four 

 fi'ont segments and to a somewhat similar degree behind the twelfth or thirteenth seg- 

 ment, but the portion preserved is very nearly uniform. The surface is grauulose as in 

 E. granosa. The head is exceedingly vague, but appears to be large, to have a rounded 

 front, and to drooj). The body segments appear to be slightly selliform by the ridging 

 of the anterior edge, and they bear, apparently on the posterior half of the segments, a 

 row of superior spines (presumably on both sides). By the fracture of the stone, these 

 spines are very obscure, but they ajjpear to be short, stout and double, having an ante- 

 rior erect prong, not higher than one-fifth of the thickness of the body, and an oblique, 

 backward directed, posterior prong a little shorter and subtriangular. The legs are a 

 little longer than the thickness of the body, laminate, the flat surface set obliquely (the 

 edge being foi'ward and outward) , of nearly equal width until near the pointed tip, when 

 they taper rapidly, the joints indistinguishable in this specimen. 



