450 Dr. H. Woodward— Synopsis of the Species of 
angles, surrounded by a furrow parallel to the border ; free-segments 
nine; axis very slightly arched, equal to its pleura in breadth 
anteriorly, but diminishing slightly towards the pygidium; pleurz 
faceted, extremities slightly produced and recurved; pygidium semi- 
circular, axis slightly arched, and composed of twelve coalesced 
segments ; pleure only faintly indicated, margin of pygidium 
smooth and slightly bevelled; surface of head and body generally 
(save the extremities of the pleurze) finely granulated. 
A detached hypostome found in the same deposit has been 
referred to this species. It is 7mm. long, and 4mm. broad. It is 
oblong in form; the alz are very minute, the central lobe is gibbous 
and ornamented with fine raised concentric striz or wrinkles, irre- 
gularly disposed. 
This well-marked species was named by M‘Coy after the present 
Earl of Enniskillen, and having only been found in Ireland, it has 
escaped the entanglements of paleontological literature, and is in 
consequence without synonyms. Although quite distinct from any 
other species of Phillipsia, itis marked by excellent generic characters. 
In the peculiar broad, smooth, circular border to the front of the 
glabella this species approaches nearest to Ph. truncatula and Ph. 
Hichwaldi. It differs from Ph. Derbiensis, in which the glabella is 
very gibbous, and actually overhangs the front border. But in the 
broad, short, and flattened form of the pygidium we seem to lose the 
ordinary tail of the Carboniferous Trilobite, and to find a strong 
resemblance to the pygidium of Asaphus and Ogygia proper. This 
leads one to observe that the pygidium appears to be a less constant 
character and of less value for classification than the form of the 
cephalic shield. 
Formation.—Carboniferous Limestone. 
Localities.—Little Island, Cork; N. E. of Ballintra and Carrick- 
breeny, Donegal; Doohybeg, Co. Limerick, Ireland. 
The specimens examined have been kindly lent by Prof. H. Hull, 
M.A., LL.D., F.R.8., from the Museum of the Geological Survey of 
Ireland, Dublin, and a single specimen is preserved in the National 
Collection. 
_ PHILLIPSIA GEMMULIFERA, Phillips, sp. 1856. Plate XI. Fig. 3. 
Asaphus, sp. indet., Brong. and Desmar. 1822. Hist. Nat. des Crust. Foss. p. 145, 
l. iv. fig. 12. 
“* Stokesii,”’ Hieber: *1830-87. Oryct. du Goy. de Moscou (footnote, p. 
121, sine descriptione). 
gemmuliferus, Phill. 1886. Geol. Yorks, vol. ii. pl. xxii. fig. 11, p. 240. 
———— ———_—. _ Buckland. 1836. Bridgw. Treat. vol. ii. p. 74, pl. 46, fig. 10. 
Phillipsia pustulata, De Koninck. 1842-44. [Sed non Trilob. pustulatus, Schlot. 
1823.] Desc. Anim. Foss. Terr. Carbonif. de Belg. p. 603, 
tab. lui. fig. 5. 
Kellii, Portlock. 1848. Rep. Geol. Lond. p. 307, pl. xi. figs. 1, a—c. 
quadriserialis, M‘Coy. 1844. Synop. Carb. Foss, Ireland, pl. iv. fig. 8, 
. 162. 
pustulata, Maids 1854. (In part only.) Cat. Brit. Foss. p. 114. 
———— Salter and H. Woodw. 1865. Cat. and Chart. Brit, Foss, 
Crust. p. 56, fig. 109. 
— H. Woodw. 1877. Cat. Brit. Foss. Crust. p. 55. 
gemmulifera, H. Woodw. 1883. Pal. Soc. Mon. Carb, Trilob. part i. 
p- 17, pl. iu. figs. 1-8. 
