Fauna of the Lower Devonian Beds of Torquay. 345 



parallel and in continuation of anterior branches of facial sutures, 

 cutting front margin at right angles and bounding on each side 

 broad flattened band forming a prora equal in width to pre-glabellar 

 area, from which it is ciit off by a gently concave transverse suture. 

 Middle-shield broadly subtriangular, truncated in front by transverse 

 suture, with subrectangular anterior lateral angles projecting for- 

 wards, and situated apart about one and a half times the front 

 Avidth of the glabella. Facial sutures with anterior branches curving 

 in strongly from the eyes and then running straight forwards parallel 

 to each other to pass into epistomal sutures in the same line ; posterior 

 branches bending suddenly outwards behind eyes parallel to posterior 

 edge of head-shield. Glabella scarcely elevated, subrhomboidal, 

 wide at base, but narrowing at about half its length to a truncate 

 anterior end, about two-thirds the length of the head-shield and 

 one-third its width at base. Axial furrows shallow. Pre-glabellar 

 area gently concave, about one-fourth the length of the glabella. 

 Occipital ring well marked, gently rounded, with meso-occipital 

 portion wider in middle than pleuro-occipital portions. Occipital 

 furrow strong, arched slightly forwards at base of glabella. Eyes 

 small, slightly elevated, situated at about half the width of the 

 glabella from its side and at about half its length. Fixed cheeks 

 flattened, but rising to slight convexity at eyes. Free cheeks slightly 

 convex in region of eyes (marginal portion unknown). 



Thorax much flattened, with lateral portions almost horizontally 

 extended, composed of thirteen segments ; axis very wide, only 

 marked off from j)leural lobes by slight constriction of segments 

 and by faint depression on surface. Pleurse subcylindrical, flattened 

 (ends not preserved), with narrow submedian pleural furrow well 

 marked. 



Pygidium semicircular ? Axis very broad at front end, conical, 

 rapidly tapering behind, composed of eight to nine complete rings. 

 Lateral lobes not well preserved. 



Dimensions (34-6 T.) : — 



mm. 



Length of head-shield . . . . . .28 



Length of glabella ....... 17 



Distance from anterior end of glabella to front margin 



of head-shield ( = pre-glabellar area + prora) c. 7 



Width of glabella at base c. 22 



Width of glabella at front end . . . . c. 14 



Distance of eye from posterior margin of head-shield c. 8 



Distance of eye from side of glabella . . . c. 7 



Length of thorax ....... 40 



Length of axis of pygidium . . . . .17 



Width of axis at front end . . . . c. 19 



I 



Horizon. — Meadfoot Beds. 



Locality. — Field at back of Kihnorie, near Hope's Nose, Torquav 

 (¥ T). 



Remarks. — The single specimen of this trilobite is in the Torquay 

 Museum (Tablet 34-6) ; it is not in a good state of preservation, and 



