452 Dr. H. Woodward— Synopsis of the Species of 
granulations on each axal segment; coalesced ribs of border also 
granulated ; no distinct border to pygidium. 
Formation.—Carboniferous Limestone. 
Localities.—Bolland and Settle, Yorkshire; Castleton, Derbyshire ; 
Monaster; Millicent; Limerick; Hook Head, and Malakeede, near 
Dublin, Ireland. 
Specimens of P. truncatula have been examined from the collec- 
tions in the Museum of the Geological Survey of Ireland, the Wood- 
wardian Museum, the British Museum, and also from the collection 
of Joseph Wright, Esq., F.G.S., of Belfast. 
PuituipstA Hicuwatpt, Fischer, sp. 1825. 
Asaphus Eichwaldi, Fischer. MS. 1825. Geognosticozool. per Ingriam Balt. 
Prov. Casan, p. 54, tab. iv. fig. 4. (Published by Eichwald.) 
Fischer de Waldheim. 1830-37. Oryctog. du Gouv. de 
Moscou, fol. p. 121, pl. xii. figs. 1 and 2. 
Otarion Eichwaldi, Eichw. 1840. Bulletin Scient. de St. Petersbourg, p. 4, 
‘“‘ Die Thier, etc., des Bergkalks im Nowogorod. Gouv., etc.” 
Phillipsia celata, M‘Coy. 1844. Synop. Carb. Foss. Ireland, p. 161, tab. iv. fig. 4. 
——_—_. Morris. 1854. Cat. Brit. Foss. p. 114. 
Griffithides meso-tuberculatus, M‘Coy. 1855. Brit. Pal. Foss. Cambridge, 4to. p. 
182, pl. 3p, figs. 10 and 11. 
Phillipsia Eichwaldi, von Miller. 1867. ‘Irilob. der Steinkohlen. des Ural. Bull. 
Soc. Imp. des Natur. de Moscou, part i. p. 121. 
celata, H. Woodw. 1877. Cat. Brit. Foss. Crust. p. 56. 
Eichwaldi, H. Woodw. 1883. Pal. Soc. Mon. Carb. Trilob. part i. p. 
22, pl. iv. figs. 2, 4-11, 138, 14. 
Head-shield circular, glabella slightly gibbous in front, but not 
overhanging the fixed border which surrounds its anterior margin, 
and also forms a rounded palpebral lobe over each eye. Basal lobes 
distinctly marked, rather triangular in form, with two short lateral 
furrows on each side of the gilabella at the back of the eyes. The 
head is marked by two pores, one on either side of the raised glabella 
just in front of the eyes (I propose to discuss their nature later on) ; 
eyes rather large, and somewhat strongly faceted, the facets being larger 
than in P. gemmulifera ; neck-lobe broad, marked by a single tubercle 
on centre, and by a row of fine granulations or minute tubercles 
along its posterior border, like those on the axis of the thorax, and 
separated on each side by a strong furrow; raised free cheek, small, 
but surrounded by a broad, flat margin, bevelled on the edge, striated 
on the under rim, and produced posteriorly into a long spine, 
which reaches even to the ninth thoracic somite; the entire head- 
shield, save the margin, is ornamented by very fine granulations ; 
axis of thorax and abdomen very distinct, each ring being marked 
by a row of very minute, spine-like granulations along its posterior 
border ; ends of pleuree roundly terminated ; pygidium composed of 
sixteen coalesced somites, central axis ornamented like thoracic axis ; 
lateral lobes of pygidium about eleven in number; margin smooth ; 
border rounded and striated with fine parallel lines. 
Hypostome.—The hypostome, which is finely striated, has an oblong, 
median axis, slightly pointed at the extremity like a heraldic shield. 
The ale are triangular in form. 
