430 SASIUEL H. SCUDDER ON NEW 



Length of specinu'ii, 3G mm.; breadth, 2.5 mm.; length of legs, 4 mm.; their basal 

 breadth, 0.75 mm. 



The species is distinguishable from the others by its short, double spines, its more than 

 usually equal form, and by the shape of the segments, which are only about half as broad 

 again as long. It seems to be most nearly related to E. carri, but altogether lacks the 

 sudden attenuation of that species in the middle of the body. It is not unlike E. rjranosa, 

 with which the texture of the l)ody and the length of the segments agree, but the spines 

 are very different and there is no such sudden contrast in elevation between the sub- 

 segments. The figure represents the legs as much too slender. 



The specimen Avas sent me for study by Mr. R. D. Lacoe, in whose collection it bears 

 the number 1814ab. It comes from Mazon Creek, Illinois. 



Euphoberia spinulosa sp. nov. 

 PI. 34, fig. 1 ; pi. 35, figs. 1, 4, 5 ; pi. 36, figs. 7, 8. 



The single specimen upon which this species was first recognized is a nearly complete 

 animal lying partly coiled on its side (PI. 34, fig. 1) and showing the legs and a fisw 

 spines. It is somewhat stout, tapering only a little in its posterior half and still less an- 

 teriorly, the specimen composed of about thirty-seven segments; the segments consist 

 apparently (for they are crushed and obscure) of an anterior, shorter, elevated, domed 

 portion, bearing spines, and a longer, lower and flat portion. In some places the ventral 

 plates, two to each of the dorsal subsegments, can be seen, every alternate one bearing 

 legs; that is, every ventral segment is broken into two, — an antei'ior larger, pedifei'ous, 

 and a postei'ior apodal subsegment, the division indicated by a slightly lower level of tlie 

 apodal half. The main segments of the body are from two or two and a half to a little 

 less than three times as broad as long, and the spines (of which only a few of the sub- 

 dorsal ones can be seen) are perfectly simple, straight, slender and tapering, scarcely 

 half as long as the width of the body. The legs are slender and tapering, slightly more 

 than half as long as the width of the body. The head is completely oljscured, being 

 mingled with the legs toward which it is coiled, but the posterior end of the body is dis- 

 tinct, with a rounded rectangular hinder edge where in the last segment it suddenly 

 comes to an end. 



Estimated length of the specimen if uncoiled, 94 mm.; breadth in the middle, 6 mm.; 

 at posterior extremity, 3.5 mm.; length of legs, 3.5 mm.; of spines, 2.75 mm. 



The specimen lies on a piece of blue limestone forming the roof shale over the lower 

 coal seam at Braid wood, Illinois, and was received for study from Mr. E,. D. Lacoe, in 

 whose collection it bears the number 1820a. 



The species as based upon this specimen seems to difier from all I have seen in the 

 simple character and delicacy of the spines, which have no basal thorn; the anterior ele- 

 vated portion of the segments is also narrower in proportion to the rest than usual. 



About a dozen other specimens later examined agree pretty well in their general char- 

 acteristics with E. granosa, and in the form of the segments with E. carri, but differ 

 from them, as from nearly all others, in the character of the armatiire, the spines being 

 long and slender and entirely without basal or other secondary sjoinules, and are there- 



