504 Dr. H. Woodward—Synopsis of the Species of 
II.—Synopsis oF THE GENERA AND SPECIES OF CARBONIFEROUS 
LIMESTONE TRILOBITES. 
By Henry Woopwarp, LL.D., F.R.S., F.G.S. 
(Continued from p. 487.) 
(PLATE XIII.) 
IV.—Bracuymetorus, M‘Coy, 1847.—General form elliptical ; 
head-shield semicircular, and slightly pointed, about one-third wider 
than long; glabella small, somewhat elevated, one-third the width 
of the entire shield, and about one-half the length, having a basal 
lobe on each side, but no short lateral furrows on the glabella; 
neck-furrow distinctly marked, equal in width to the posterior 
border of free cheeks; eyes small, smooth, equal to half the length 
of the glabella; no facial suture visible, only the axal furrow sur- 
rounding the glabella and the neck-furrow ; free-cheeks slightly 
convex, nearly twice as long as they are broad, with no visible 
suture separating them from one another in front of the glabella; 
margin broad and slightly grooved, angles of cheeks produced 
posteriorly into spines. ‘The entire surface of the head covered 
irregularly with a small bead-like ornamentation. 
Thoracic segments not known, probably nine in number. 
Pygidium consisting of a variable number of segments from ten to 
seventeen, the axis tapering rapidly to a bluntly-rounded extremity, 
each segment of axis ornamented with bead-like granulations; ribs 
with a double furrow extending nearly to the border, which is 
smooth and rounded. 
BracHYMEToPus Ourazicus, De Vern. sp. 1845. PI. XIII. Fig. 1. 
Phillipsia Ouralica, De Vern. 1845. Geol. Russ. vol. ii. p. 378, tab. 27, fig. 16a, bd. 
—— Jonesii, De Kon. 1844. Anim. Foss. p. 606, t. 53, fig. 6 (mon Portlock). 
Lrachymetopus Ouralicus, Morris. 1854. Cat. Brit. Foss. p. 101. 
———_ ———— J. W. Salter and H. Woodw. 1867. Cat. and Chart. Foss. 
Crust. p. 16, fig. 118. ; 
P VY. von Moller. 1867. Bull. Soc. Nat. Moscou, pp. 24-27, 
and pp. 67, 68, pl. i. figs. 32-35. 
H. Woodw. 1877. Cat. Brit. Foss. Crust. p. 28. 
Head-shield nearly twice as broad as it is long, slightly pointed in 
front; glabella small, tumid, very obtusely conical, only half the 
length of the head-shield, and one-third its breadth, no short lateral 
furrows visible, only the two small basal lobes which truncate the 
posterior angles of the glabella; axal-furrows inclosing the glabella 
antero-laterally ; neck-lobe narrow, rounded distinctly, separated by 
the neck-furrow from the glabella; eyes small, placed close to the 
glabella, prominent, reniform, surface smooth; no facial suture 
visible ; free-cheeks convex, confluent around the glabella, with a 
broad flattened slightly concave margin, the rim of which is slightly 
raised; posterior margin of free-cheeks separated by a furrow con- 
tinuous with the neck-furrow ; the posterior angles of the head 
produced into short slightly recurved spines; entire surface of head 
covered with small bead-like tubercles, five larger ones being placed 
around the front border of the glabella, and one in advance of each 
eye on the free-cheeks. 
