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PROCEEDINGS COTTESWOLD CLUB 
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the meso-occipital furrow nearly at right angles and bounding the large basal 
lobes internally. Frontal lobe about one-fourth the length of the glabella ; 
first lateral lobes very small ; second lateral lobes about twice as large ; 
basal lobes large, slightly pi'ojecting laterally, oblique to axial line, about 
one-third the length of glabella, and fully one-fourth its width at this level, 
swollen, with slight independent convexity, .\xial furrows well marked, 
diverging slightly from front end of glabella to basal lobes, then curving out 
gently round them and bending in behind them to ba.se of glabella, which is 
therefore somewhat contracted. Meso-occipital ring rather flattened, with 
median tubercle; meso-occipital furrow strong, horizontal ; occipital nodules 
low, faint, large, as wide as base of basal lobes. The facial sutures cut the 
posterior border at acute angles, bending out sharply behind the eyes ; the 
anterior branches ciarve out gently to cut the anterior border at about twice 
the anterior width of the glabella. 
Fixed cheeks narrow, with large semi-circular eye-lobe bent up, 
elevated and extendil^g from second lateral furrows nearly to base of glabella ; 
pre-glabellar area forming narrow band ; anterior wing of fixed cheeks small, 
triangular, flattened. 
Border of head-shield flattened, widening in middle in front of glabella to 
more than twice the width of pre-glabellar band, marked off by very broad 
shallow marginal furrow holding in it a short narrow raised ridge concentric 
to the margin and median in position in front of the glabella ; outer half 
of border marked with a few strong raised concentric thread-like lines. 
Free-cheeks large, very slightly convex, with a fine ridge concentric 
to lateral margin dividing each into two parts and ending at genal 
angle. Eye large, rounded, prominent, semi-circular, nearly touching 
sides of glabella. Genal angle furnished with stout spine, marked down 
centre with continuation of marginal furrow of cheek. Border of cheek 
flattened and concentrieally striated. Pleuro-occipital segment wide, marked 
off by slightly sigmoidal furrow, meeting marginal furrow at genal angle at 
about 6o°. Surface of glabella and of meso-occipital ring covered with very 
fine closely-placed broken sinuous lines arched forwards ; anterior wings 
of fixed cheeks and eye lobes ornamented with similar lines directed nearly 
at right-angles to the facial sutures ; ornamentation of free-cheeks not pre- 
served, but probably similar. 
Hypostome sub-oblong in shape, having the body strongly convex, oval, 
and highest at about one fourth its length, with its apex sub-conical and the 
an terior face .somewhat flattened and triangular. Lateral furrows short, oblique, 
situated at about three-fourths the length of the body at a slight transverse 
constriction, having large oblique transversely o\'al macula: behind them ; 
posterior transverse lobe of body somewhat depressed. Border rounded, 
clearly marked off by deep furrows at sides and behind, and bearing three 
strong raised concentric thread-like lines on its surface. 
Pygidium broadly semi-circular, gently convex, with prominent sub- 
cylindrical cixis less than one-fourth its width and extending about three- 
fourths its length, annulatcd nearly to blunt tip by 9-10 complete rings 
Lateral lobes composed of 3-6 pleura, .separated by fine interpleural furrows ; 
pleural furrows very fine, diagonal, chiefly developed at outer ends of pluura. 
all ending at weak concentric marginal furrow, which is most marked ])os- 
teriorly. 
Dimensions : Length of head-shield . . . . 
glabella .. .. 3-3,, 
Width of ditto at base . . . . 3-0 ,, 
Length of hypostome .. .. 4M .. 
,, pygidium .. about 7*5 
Width of ditto .. .. ,, 4'6 ,, 
