278 
Relations and Differences. — Tliis species 1ms often been confused witli 
P. geninmlifera, J. Phillips. I myself made this mistake in 1841*. Since 
then I have studied numerous specimens of various species, and have thus 
been able to j)i’ove — first, that P. geninmlifera does not differ in the least 
from the species described and figured by Schlotheim, in 1823, under the 
name Trilohites Asaphus piistulatus, and which should be named Dhillipsia 
pi/sfidata, as I said more than twenty years ago ; secondly, that P. seminifera 
differs from the species just mentioned by the faintness of its granulations, 
and the greater number of them on the lateral segments of the pygidium, and 
b}^ the rather more restricted number on the segments of its axis. 
Horizon and Localities. — This Dhillipsia appears to belong exclu- 
sively to the Upper Carboniferous Limestone, in which Phillips found it at 
Bolland, Yorkshire. I have noticed its presence in the Vise Limestone, and 
]\[r. Clarke found it at Colocolo. It is probably the species found by McCoy 
in tlie shales of Uunvegan, but which he did not determine, merely observing 
that it v/as closely allied to P. gemmulifera, Phillips. 
GEIFFITIIIDES, J. L. Dorlloclc. 
Griffithides Eiciiwaldi, G. Fischer de Waldheim} 
PL XXIV, Pig. S. 
G. Fisciier de Waldheim, 1825, in Eicdiwald, Geogn. Zool. per 
Ingriam Balt, Prov., p. 51, pi. 4, fig. 5. 
lloll, 1829, Ilandb. Petrel., p. 17G. 
J. Phillips, 1S3G, Geol. Torksliire, II, p. 230, pi. 22, fig. 7. 
Idem, 1S3G, ihid., p. 239, pi. 22, fig. 3-G. 
G. Piselicr de Waldheim, 1837, Orjot. Gour. Moscou, p. 121, 
pi. 12, fig. 2. 
A. Goldfuss, 1843, Neues Jahrb. fiir Miii., p. 5G2. 
L. G. de Koiiiuck, 1814, Bescr. Anim. Poss. Terr. Carb. Belg. 
p, 597, p)l. 53, fig. 7 (non Deslongcdiamps) . 
Griffithides granul ferns, P. McCoy, 1844, Synop. Carb. Poss. Ireland, p. IGO. 
,j ohsolet as, Idem, 1844, ihid., p. IGl. 
' O'riffit/iidcs Sireeti, R. I'ltheridge, .Tunr., Mem. Ceol. Survey N. 8. Wales, Pal. 5, Pt. 2, 1892, pp. 124, 
25; Proos. Linn. Soc. N. 8. WAles, 1895, IX (2), p. 528, t. 39, f. 3. — W.8.I).] 
Asapjhus Ficliwaldi, 
jj )> 
,, granul ferns, 
,, ohsolet ns, 
„ Licit loaldi, 
Gerastos Brongniarti, 
Dhillipjsia „ 
