482 Dr. H. Woodward — Culm TriloUtesfrom North Devon. 



in length, and is 10 mm. in breadth at the posterior border ; it 

 diminishes slightly to 9 and 8 mm. respectively, 10 and 11 mm. 

 from the posterior margin, and is marked by three recurved furrows 

 on each side ; the hindermost cuts off a small semicircular lobe 

 which is enclosed by it and the latero-posterior angle of the glabella. 

 The glabella is rounded, and does not expand in front ; it is separated 

 from the anterior border by the flattened margin of the fixed cheek, 

 which is 3 mm. broad ; the fixed cheeks are 4 mm. broad on each 

 side of the glabella, where anteriorly they form a rounded lateral 

 expansion, contracting to 1 mm. in breadth just in front of the eye 

 and broadening to 2 mm. on the superciliary region ; thence, after 

 a slight contraction, it again expands to a breadth of 5 mm. at its 

 union with the posterior margin. The nuchal furrow is not very 



A clearly defined and the free cheeks are not preserved. 



This glabella and the pygidium, Fig. 12, represent fragments of 

 some of the largest Trilobites hitherto obtained from the Lower 

 Culm of Coddon Hill. 



-■^ Although much larger in size than PTi. Polleni, from the Carboni- 

 ferous (Culm ?) Shale-beds of the river Hodder, at Stonyhurst (see 

 Geol. Mag., 1894, p. 487, PI. XIV, Figs. 7-12), I am nevertheless 

 inclined to refer this glabella to that species, possibly also the 

 detached cheek. Fig. 13. 



Fig. 2, although smaller (being drawn twice nat. size), probably 



•^ from its form, may likewise be referred to Ph. Polleni. 



These fragments may serve to suggest the probable presence of 

 this species at Coddon Hill.^ 



Phillipsia spatulata, sp. nov. (PL XX, Figs. 3, 4.) 



The head in this species is remarkable for the peculiar form of 

 the cheek-spines, which have a broadly rounded and expanded 

 extremity quite unlike that of any other Trilobite from this locality. 

 The length of the head-shield in Fig. 3 measures 12 millimetres, 

 and the breadth at its base 18 mm. The length of the head to the 

 end of the cheek-spines is 20 mm. These spines extend backwards 

 8 mm. beyond the base of the head, being nearly 3 mm. broad, and 

 are striated longitudinally upon the under surface. The glabella 

 is 6 mm. broad at its base, the sides are nearly parallel, with a slight 

 expansion and tumescence in front ; the fixed cheeks are narrow ; 

 they form a border of about 1 mm. in width around the glabella in 

 front. Owing to the state of preservation of these specimens the 

 eyes cannot clearly be made out, but they are about 6 mm. from 

 the posterior border of the glabella ; the free cheek is semicircular 

 in outline, with a broad margin which widens perceptibly backwards 

 to the posterior angle, where the spatulate cheek-spine originates. 



There are two small triangular lobes at the base of the glabella 

 and a minute tubercle which marks the centre of its posterior 



1 The species hitherto recorded (see Quart. Journ. Geol. Soc, 1895, vol. li, 

 pp. 646-649) are •.—Phillipsia Led, H. Woodw. ; P. minor, H. Woodw. ; P. Gliffordi, 

 H. "Woodw. ; Phillipsia, ? sp. ; Griffithides acanthiceps, H. Woodw. ; G. longispinus, 

 Portl. ; Proetus, sp. («, b). 



