THE 
GEOLOGICAL MAGAZINE. 
NEW) "SERIES: DECADE lly VQEI IN. 
No. III.—MARCH, 1888. 
(@Qizal Ee weIN( Min) PIS ya be KOA mnt lS) 
=e 
T.—On Some ScanDINAvVIAN PHyYLLocariDA. 
By Prof. T. Rupert Jonzs, F.R.S., and Dr. Henry Woopwarp, F.R.S. 
(PLATE V.) 
OME Phyllocarida from the Silurian strata of Scandinavia 
(Sweden and the Island of Gothland) are represented by speci- 
mens in the State Museum at Stockholm. Drawings, casts, or the 
specimens themselves have been shown to us by our friend Professor 
Gustav Lindstrém, F.C.G.S., and we have arrived at the following 
conclusions as to their jrelationships.—See the ‘“ Fifth Report on the 
Fossil Phyllopoda of the Paleozoic Rocks,” read at the Manchester 
Meeting of the British Association for the Advancement of Science, 
September 3, 1887 (printed and issued at the same date), pp. 1-3. 
I, CERATIOCARIS. 
Monograph of the British Palsozoic Phyllocarida, Pal. Soc., by T. R. J. & H. W., 
1888, pp. 9-13. 
1. Crrariocaris Aneenini, T.R.J.& H.W. Plate V. Fig. 1. 
Fifth Report, etc., 1887, p. 1. 
This unique specimen is a long, stout, trifid caudal appendage, 
consisting of the style or telson (145 mm. long, and 17 mm. broad 
at the top) and two stylets (each 75 mm. long) lying close together. 
One of the latter and the style have been broken across by a crush, 
and the style is not quite perfect at the tip (possibly 15 mm. longer 
originally). The lower (ventral) surface only is shown. The 
articulation of the stylets with and beneath the shoulders of the 
style—that is, under the backward extension or overhanging hinder 
edge of its head or proximal end—is very distinct. The upper edge 
of this part of the style (the surface articulating with the ultimate 
segment) has an undulated profile, with two small, projecting, un- 
symmetrical, curved, horn-like processes. 
The style on this its lower aspect has a deep groove along the 
middle of its upper moiety (obscured at the top), becoming narrow 
lower down. A slight groove on each side is also present. No 
delicate ridging is seen, nor any pits for bases of prickles. The 
stylets are smooth, and apparently subtriangular in section, each 
bearing one strong ridge on the upper part of the under face (as 
exposed), 
DECADE III.—VOL. V.—NO. III. 7 
