INCERTjE SEDIS — ELASMOBRANCHII. 
Pisces 37 
INCER1VE SEDIS (ICHTHYODORULITES). 
Acanthaspis clccipiens , p. 4, pi. i, and minor , p. 6, pi. ii, figs. 2-5, n. spp., 
A. S. Woodward, Ann. N. H. (6) viii, Devonian of Spitzbergen. 
Psammosteus arenatus, A g. : note by A. S. Woodward, t. c. p. 10, 
pi. ii, fig. 11. 
Ctcnacanthus amblyxiphias , n. sp., Cope, P. U. S. Nat. Mus. xiv, p. 449, 
pi. xxviii, fig. 3, Permian of Texas. 
HOLOCEPHALI. 
G. B. Howes, P. Z. S. 1890, p. 687, remarks on the pectoral fin- 
skeleton of the Liassic Squaloraja polyspondila , which he regards as 
indubitably a Chimaeroid, in accordance with A. S. Woodward, Cat. 
foss. Fish, ii, p. 40. 
Myriacanthus paradoxus , Ag., pi. ii, figs. 1-3, and granulatus , Ag. 
(foss.), pi. ii, fig. 4, & pi. iii, figs. 3 & 4, figured by A. S. Wood- 
ward, t. c. 
' Palcemylus, n. g., for the following fossil species :—Phynchodus 
crassus , Newb., R. frangens , Newb., and R. greenei, Newb. ; id. t.c. p. 39. 
Chimcera pliocenica, n. sp. (foss.), id. Cat. foss.Rept. ii, p. 91, pi. i, fig. 
15, Pliocene of Tuscany. 
Au egg-capsule of Callorhynchus ? figured by Alcock, Ann.'N. H. 
(C) viii, p. 22. 
iVaillantoonia virei , n. g. & sp., for the impression of a fossil egg-case of 
a Chimaeroid; S. Meunier, C.R. cxii, p. 1154. 
ELASMOBRANCHII. 
ACANTHODII. 
Reis, O. Zur Kenntniss des Skelets der Acanthodinen. Geogr. JB. 
iii, pp. 1-43, figs. (1890). 
Acanthodes nitidus , n. sp., A. S. Woodward, Cat. foss. Fish, ii, p. 9, 
Calciferous Sandstones, Dumfriesshire. A. mitchelli , Egert., figured; id. 
t. c. pi. i, fig. 7. 
Ischnacanthus gracilis , Egert., figured ; id. t. c. pi. i, fig. 8. 
Diplacanthus longispinis , Egert., figured ; id. t. c. pi. iii, fig. 1. 
SELACHII. 
Rex, H. Beitrage zur Morphologie der Hirnvencn der Elasmobranchier. 
Morph. JB. xvii, pp. 417-466, pis. xxv-xxvii. 
Gegenrauer, C. Ueber Cocalanhange am Mitteldarm der Selachier. 
Op. cit. xviii, pp. 180-184, fig. 
