64 
Genus — HELIOLITES, Dana. 
Heliolites pokosa, Oolclfuss. 
Seliolithe pyrif ovine a etoiles, Gruettard, 1770, Mem. sur les Sc. et les Arts, III, p.454, 
pi. 22, fig. 13 and 14. 
A.strea povosa, Gloldfuss, 1826, Petrel. G-erm., I, p. 64, pi. 21, fig. 7. 
Hellopora pyriforinis, Blainville, 1831, Man. d’ActinoL, p. 392. 
Dovites 55 Lonsdale, 1840, Trans. Geol. Soc. London, V (2), pi. 58, fig. 4. 
Porites (.^) 55 Phillips, 1841, Pal. Foss. Cornwall, p. 14, pi. 7, fig. 19. 
D alceopora ,, McCoy, 1851, Brit. Pal. Foss., p. G7. 
Heliolites povosa, Milne Edw. and J. Ilaime, 1851, Polyp. Foss. Terr. Pal,, p. 218. 
5 5 55 Idem, idem, 1852, Brit. Foss. Corals, p. 212, pi. 47, fig. 1. 
Althongli the single specimen that I refer to this species is in a bad 
state of preservation, still I think I am not wrong in its determination. The 
characters of the species are besides so well marked and easily grasped that it 
is almost impossible to confuse it with any other, and I will not detail them 
in this work. 
Horizon and Localities. — -This species is found rather frequently in the 
Devonian of the Eifel ; it is a little rarer in the same formation in Devonshire. 
The specimen I have before me has been collected at Mowara, and occurs in 
a rolled piece of dolomite associated with Favosites fibrosa, Goldfuss. 
Division — MOLLUSCOIDEA. 
BRACHIOPODA. 
Genus — DISOINA, Lamarch. 
Discina alleghania, j. Hall. 
PI. VI, fig. 1.' 
Discina alleghania, J. Hall, 1861, Ann. Eept. Eegents Slate Cabinet N. York, XIII, p. 77. 
55 „ Idem, 1867, Pal. N. York, IV, p. 25, pi. 1, fig. 17. 
Shell almost completely circular, posterior side a little less develo2ied 
than the anterior. The lower or ventral valve, which is the only one known 
to me, is undulated; and while the anterior jJortion is concave, the opposite 
^ [PI. IV, fig. IG, in original. — W.S.D.] 
