84 
ON A CARBONIFEROUS TRILOBITE FROM ANGRAM, IN NIDDERDALE. 
BY HENRY WOODWARD, LL.D., F.R.S., ETC. 
Dr. F. A. Bather recently transmitted to me some remains 
of a small Trilobite from Angram, in Xidderdale, which he 
ha,d received from Mr. E. Hawkesworth, of Leeds. The fossils 
are contained in black carbonaceous shales occurring below 
the Millstone Grit in the Cyathaxonia beds immediately below 
the Lower Culm, and on the same horizon as those at Bishops- 
ton, Glamorganshire, which yielded to Mr. F. Barke, F.G.S., 
a good example of a new species of Trilobite named Grifjithides 
Barkei (see my paper on " Culm Trilobites", Geol. Mag., 1902, 
pp. 484-486, PI. XX., Figs. 14, 15). The Nidderdale black 
shales contain numerous detached portions of a small Trilobite, 
a Pecten, and several Brachiopods. 
The fossil was found during the field excursion of the York- 
shire Geological Society to Nidderdale, under the leadership 
of Dr. Wheelton Hind and Dr. Arthur Vaughan, on Friday, 
April 13th, 1906. 
One nearly perfect example of this Trilobite from Angram 
measures 17 mm. long by 10 mm. in breadth. At first sight 
I took it to be Phillipsia Eichivaldi, but the glabella is more 
tumid and triangular in form, and the front border projects, 
beyond the margin of the head-shield, whilst it contracts post- 
eriorly to a point at its cerv^ical border, as seen in all typical 
forms of the genus Grifpthides. 
The cheek-spines are long, and extend to the sixth thoracic 
segment. The compound eyes are large, and placed laterally, 
and weU behind the projecting and expanded front of the gla- 
bella. 
The posterior point of the glabella is prominent and marked 
by a tubercle (the surface, however, is partially decorticated 
and only the prominence is shown on the cast). There is a small 
triangular rounded glabellal lobe on each side behind the com- 
pound eyes, and close to the posterior (cervical) border of the^ 
head-shield. 
