502 ON THE IDENTITY OF BRONTEUS PARTSCHI, DE KONINCK, 



Bronteus Jenkinsi, sp.nov. 



Bronteus Partschi, de Koninck, (non Barr.) Foss. Pal. Nouv, 

 Galles du Sud, 1876, pt. 1, p. 57. 



Bronteus sp. Jenkins, P.L.S.KS.W., 1879, III., pt. 3, p. 217, 



t. 17, f. 3, 4, 6, 8. 



Sjy. Char. General form of the body oblong-oval, with straight 

 and parallel sides. Cephalic Shield sub-semicircular, about three- 

 fourths the width of the thorax. Glabella battle-axe-shaped, 

 extending to the front margin, and ornamented with concentric 

 anastomosing lines ; anterior facial grooves long and somewhat 

 arched. Middle facial grooves marked by faint depressions which 

 do not communicate with the axal furrows, posterior facial grooves 

 wide and short ; neck furrow shallow, arched forward medially, 

 and similarly curved forward at its latei'al terminations on joining 

 the axal furrows; neck segment moderately wide and gently arched, 

 convexly directed backwards, unarmed; axal furrows much curved, 

 outwards anteriorly, similarly curved posteriorly, but less so; 

 fi'xed cheeks moderately large, sub-crescentic in shape, with a 

 rather large and pronounced eye lobe ; facial sutures anteriorly 

 from the eye to the front angle of the glabella tolerably straight, 

 then curve inwards along the front of the glabella, to about one- 

 sixth of the glabella's front measurement, posteriorly short, shar])ly 

 curved, and cutting posterior margin about midway between 

 the central line and lateral margins. Free cheeks large, covered 

 with irregulai', somewhat vertical wrinkles, crossed by finer lines ; 

 limb striated ; genal spines stout and broad, extending to and 

 inclusive of third thoracic segment; eyes large, crescentic, with 

 small and numerous facets. Thorax wider than long, about one- 

 fourth longer than the head ; axis about a sixth wider than the 

 pleuree and their spines together, slightly arched ; axal furrows 

 well marked ; pleurae nearly flat, with short claw-like spines, very 

 narrow grooves bordering the entire posterior margins ; semi-facets 

 short and well marked; ornament of transverse wrinkles. Pygidiutn 

 oblong-semicircular, wider than long, four-fifths as long as thorax 

 is wide, anterior margins straight and parallel-sided, posterior 



