i 
e 
PISCES. 65 
DIDYMAS PIS, E. R. Lankester, Geol. Mag., vol. iv, 1867, 
p- 152. 
grindrodi, E. R. Lankester, zd, p. 153, pl. vill, f. 4-8, and 
Fishes O. R. Sandst., pt. i (Pal. Soc., 1870), p. 59, pl. xiii, 
f. 1, 2, and woodcut 33. 
Loc. L. Old Red Sandst. (Passage Beds) ; Ledbury, Hereford- 
shire. [Head-shield ; Oxford Mus.] T. 
DIMYLEUS, J. W. Davis (ex Agassiz, MS.), Trans. Roy. Dublin 
Soc. [2] vol i (1883), p. 478. [Genus non det.] 
woodii, J. W. Davis (ex Agassiz, MS.), zé¢d., p. 478, pl. lviii, 
f. 24. Indeterminable tooth (A. S. Woodward, Cat. Foss. 
Fishes B. M., pt. i, 1889, p. 99). 
Loc. U. Carb. Limest.; Richmond, Yorkshire. [Tooth; Brit. 
Mus.] T. 
DIODONTOPSODUS, Davis. v. Pristodus. 
DIPLACANTHUS, L. Agassiz, Poiss. Foss. V. G. R. (1844), 
PP. 34, 49. 
RHADINACANTHUS, R. H. Traquair, Geol. Mag. [3] vol. v, 1888, 
p. 512. 
crassispinus, Agassiz. v. Diplacanthus striatus. 
crassissimus, Duff. v. Diplacanthus striatus. 
?curtus: Euthacanthus curtus, J. Powrie, Trans. Edinb. Geol. 
Soc., vol. i (1870), p. 293, pl. xii, f. 7. 
Loc. L. Old Red Sandst. ; Forfarshire. [Fish, wanting head ; 
J. Powrie Coll.] 
gibbus, M‘Coy. v. Diplacanthus striatus. 
gracilis, Egerton. v. Ischnacanthus gracilis. 
longispinus, L. Agassiz, Poiss. Foss. V. G. R. (1844), pp. 34, 42, 
pl. xiii, f. 5, pl. xiv, f. 8,9; J. Morris, Cat. Brit. Foss., 1854, 
p: 325. 
‘ Ichthyolite,’ H. Miller, O. R. Sandst., 1841, pl. viii, f. 1. 
Diplacanthus perarmatus, F. M‘Coy, Ann. Mag. Nat. Hist. [2] 
vol. ii, 1848, p. 301, and Brit. Palaeoz. Foss. (1855), p. 5385, 
pl. ii B, f. 3; J. Morris, Cat. Brit. Foss., 1854, p. 325. [Fish; 
Woodwardian Mus.] 
Rhadinacanthus longispinus, R. H. Traquair, Geol. Mag. [3] 
vol. v, 1888, p. 512. T. (Rhadinacanthus.) 
Loc. L. Old Red Sandst.; Nairnshire, Cromarty, and Orkney 
Isles. [Fish ; Forres Mus. } 
perarmatus, M‘Coy. v. Diplacanthus longispinus. 
striatulus, Agassiz. v. Diplacanthus striatus. 
striatus, L. Agassiz, Poiss. Foss. V.G.R. (1844), pp. 34, 41, pl xiv, 
f.1-5; J. Morris, Cat. Brit. Foss., 1854, p. 325; 
Traquair, Geol. Mag. [3] vol. v, 1888, p. 512. 
Tr 
