12 F. R. Coicper Reed — Undcscrlbed Trilohltcs. 



Axal furrows weak in front of the eye, and passing into the 

 ■marginal furrow at the front end of the glabella. Between the eye- 

 lobe and glabella, and posterior to the eye, they are deep and strong. 



Occipital furrow stronger than axal furrows, and arched forward 

 in the middle and at each side in front of the lateral occipital nodule. 



Occipital ring rounded, considerably wider than a thoracic axial 

 I'ing, and furnished with a small median tubercle and a pair of 

 lateral nodules, which are sharply circumscribed, of oval shape, 

 swollen, prominent, and occupying nearly the whole width of the 

 occipital ring at the base of the axal furrows. 



In front of the glabella is a raised and rounded border, well 

 <lefined by a strong marginal furrow. 



Fixed cheeks with narrow anterior wing and large, semicircular, 

 horizontally - flattened eye - lobe, strongly elevated to nearly the 

 height of glabella. Eye-lobes reach from anterior lateral furrows 

 of glabella to behind basal pair, but do not project enough laterally 

 to cover whole upper surface of convex eje. Posterior wing of 

 fixed cheek small and triangular, owing to course of facial suture. 

 Occipital segment of cheek rounded, raised, and narrower than 

 occipital ring behind glabella. 



Facial sutures cut anterior border of head-shield at a distance 

 apart equal to basal width of glabella. From these points of section 

 they curve backwards and slightly inwards to front of eye, then 

 ■bend out and circumscribe eye-lobe, and behind it curve sharply 

 ■outwards to cut neck-ring obliquely at an angle of 20°-30°, reaching 

 the posterior margin close to the base of the genal spine. 



Free cheeks triangular, furnished with broad, rounded, and striated 

 'border, continued backwards at the genal angle into the genal spine, 

 which is broad at the base, tapers rather rapidly to its pointed 

 extremity, and is less than half the length of the head-shield. It is 

 ornamented with longitudinal striations. The marginal and occipital 

 furrows meet each other at the genal angle at an angle of nearly 

 •60°. The inner portion of the free cheeks is strongly elevated and 

 convex, with steep anterior but gentler lateral and posterior slopes. 

 On the summit it bears the large prominent eye which extends for 

 nearly two-thirds the length of the glabella. A shallow groove 

 encircles base of eye, and runs round it from the level of the occipital 

 furrow to the anterior lateral furrow of the glabella. 



Thorax about equal in length to head-shield, consisting of ten 

 segments, with a broad, gradually tapering, cylindrical axis, nearly 

 half as wide again as the pleural portions. Rings of axis simple, 

 regular, and devoid of ornamentation. Axal furrows distinct, but 

 not deeply impressed. 



Pleuras semicylindrical ; each consisting of an inner, straight, hori- 

 zontally-extended portion and an outer, longer, extra-fulcral portion, 

 which is bent gently downwards and backwards at an angle of 45°. 

 Inner portion crossed by diagonal furrow, making an angle of about 

 20° with the straight anterior edge. This furrow divides the inner 

 portion into two unequal parts, of which the posterior is much 

 the larger. On the extra-fulcral portion the furrow is obsolete, and 



