BY JOHN MITCHELL. 459 



Phillipsia rockhamptonensis, sp.nov. 

 (Plate xlix., figs. 9, 10; Plate 1., figs. 8, 9). 



Phillipsia dubia Etheridge, fil., Geol. and Pal. Queensland and 

 New Guinea, 1892, pp.214-215, P1.44, fig.4. 



P. woodwarai Eth. fil., op. cit, p. 215, PL 4 4, fig. 6. 



Complete form oblong-ovate. 



*S'^. Chars. — Cephalon sub-semicircular, appearing to have been 

 very finely granulated. Glabella subcylindrical or conical, 

 widest across the basal lobes, two lateral furrows visible on the 

 left side, basal pair wide, deep, and very distinctly joining the 

 neck-furrow, basal lobes small, very prominent and sub-pyriform; 

 neck-furrow deep centrally and shallowed laterally by a very 

 mild swelling behind the basal glabellar lobes, which can barely 

 be said to be supplementary lobes, its lateral extensions shallow; 

 neck-ring stronger and more convex than any of the axial rings, 

 very faintly tuberculate at its base, front limb narrow, the 

 margin being upturned and gently thickened ; axial grooves 

 narrow; fixed cheeks small; eye-lobe relatively large and gran- 

 ulated; free cheeks fairly large, only moderately tumid, depressed 

 but posteriorly high and sloping steeply into the posterior 

 furrow, distinctly channelled under the eyes, lateral furrows 

 wide, lateral borders of moderate width, mildly tumid, under- 

 surface striated; facial sutures not distinguishable anteriorly, 

 and posteriorly obliquely crossing the fixed cheeks rather close 

 to the axial grooves; eyes of medium size, reniform, faceted, 

 prominent and vertically narrow, genal angles bearing Ion"- 

 spines. 



Thorax oblong, length equal to the width of the axis and one 

 side-lobe, granulations microscopic, somites of the normal num- 

 ber, axis strongly convex, wider than one side-lobe, diminishing 

 posteriorly very gently and uniformly, anterior width in the 

 specimen under notice being 5 mm., and the posterior width 

 4 mm.; each individual ring has a decided anterior trend cen- 

 trally and tuberculate bases, ridges and valleys narrow, and on 

 the former the articulating seams are plainly visible; side-lobes 

 convex, steeply deflected from the fulcra, segmental ends strongly 

 faceted, axial grooves narrow. 



