Beecher — New Permian Xiphosuran from Kansas. 23 



Art. III. — Note on a New Permian Xiphosuran from 

 Kansas / by Charles E. Beecher.* 



Through the courtesy of Mr. J. W. Beede, of Indiana Uni- 

 versity, the writer has had an opportunity to examine a por- 

 tion of the cephalothorax of a large Xiphosuran from the 

 Permian of Kansas. It apparently belongs to the genus Prest- 

 wichia and it is chiefly interesting, aside from its large size, on 

 account of its coming from a higher horizon than any other 

 American species yet known. 



1 



Figure 1. — Prestivichia signata restored and of natural size. The smooth 

 lateral or genal regions are the parts restored. 



In the March number of the American Geologist for 1902, 

 the writer described a species of Prestwiohia from the Che- 

 mung (Devonian) of Pennsylvania, which carried the geolog- 

 ical distribution of the genus from the Coal Measures to the 

 Upper Devonian. The present species extends its range in the 

 other direction as far as the lower Permian. The Carboniferous 

 forms of Prestwiohia in general show very little evidence of the 

 segmental nature of the cephalothorax, and it was of consider- 

 able interest to describe in the Chemung species a series of 

 nodes on each side of the glabellar region corresponding, it 

 was believed, to five of the six pairs of appendages on the ven- 

 tral side. The new Permian form also exhibits a similar series 

 of appendicular lobes on each side of the axis, which agree in 



* Among the papers of the late Professor Beecher was found the manu- 

 script of this article as here printed. The manuscript was compared with 

 the cast of the fossil and found to be complete as far as the very imperfect 

 but interesting specimen will permit. — Charles Schuchert. 



