PISCES. 93 
HELODWS (continued)— 
angularis: Lofhodus angularis, J. W. Davis, Quart. Journ. 
Geol. Soc., vol. xl, 1884, p. 628, pl. xxvii, f. 25. 
Loc. Yoredale Rocks ; Wensleydale. [Tooth ; York Mus.] 
appendiculatus, I. M‘Coy, Ann. Mag. Nat. Hist. [2] vol. ii, 
1848, p. 123; J. Morris, Cat. Brit. Foss., 1854, p. 328. 
noc. L. ra Limest.; Armagh. [Tooth; o/z7 Capt. Jones 
Coll. 
bifurcatus: Lophodus bifurcatus, J. W. Davis, Trans. Roy. 
Dublin Soc. [2] vol. i (1883), p. 408, pl. li, f. 25, and Quart. 
Journ. Geol. Soc., vol. xl, 1884, p. 628, pl. xxvil, f. 5. 
Loc. Yoredale Rocks ; Wensleydale. [Tooth ; York Mus.] 
cinctus (Agassiz), M‘Coy. v. Chomatodus cinctus. 
clavatus, J.\V. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
Pp. 455, pl. lix, f. 5, 6 
Loc. L. Carb. Limest.; Armagh. [Teeth; Brit. Mus.] 
conicus: Lophodus conicus, J. W. Davis, Quart. Journ. Geol. 
Soc., vol. xl, 1884, p. 627, pl. xxvi, f. 18. 
Loc. Yoredale Rocks ; Wensleydale. [Tooth ; York Mus.] 
crassus, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol. i (1883), 
p. 453, pl. lix, f.1, 2. [Including Chomatodus cinctus, Agassiz 
(pars).| 
Loc. L. Carb. Limest.; Armagh. [Teeth; Brit. Mus.] 
didymus, Agassiz. v. Psephodus magnus. 
expansus, J. W. Davis, Trans. Roy. Dublin Soc. [2] vol.i (1883), 
p. 457, pl. lix, f. Io. 
Chomatodus linearis, L. Agassiz (Jars), Poiss. Foss., vol. iii 
(1838), p. 108, pl. xii, f. 7, 8, 12, 13; J. W. Davis, Trans. Roy. 
Dublin Soc. [2] vol. i (1883), p. 508, pl. lxi, f. 1. [Teeth ; 
Bristol Mus. (urs).] 
Loc. L. Carb. Limest.; Armagh. [Tooth; Brit. Mus.] 
gibberulus, L. Agassiz, Poiss. Foss., vol. iii (1838), p. 106, pl. xii, 
f. 1, 2 (Psammodus on plate); J. Morris, Cat. Brit. Foss., 
1854, p. 328. 
Lophodus gibberulus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i (1883), p. 405, pl. li, f. 19. 
Loc. L. Carb. Limest.; Armagh. [Tooth ; Bristol Mus.] 
levissimus, Agassiz (zon F. M‘Coy, Brit. Palzeoz. Foss. (1855), 
p. 630, pl. iiil, f. 17; 202 J. W. Davis, Trans. Roy. Dublin 
Soc. [2] vol. i (1883), p. 404); J. Morris, Cat. Brit. Foss., 
1854, p. 328. v. Psephodus levissimus. 
levis: Lophodus levis, J. W. Davis, Trans. Roy. Dublin. Soc. [2] 
vol. 1 (1883), p. 409, pl. li, f. 26, 27, and Quart. Journ. Geol. 
Soc., vol. xl, 1884, p. 627 (LZ. /evis). 
Loc. Yoredale Rocks ; Wensleydale. [Tooth ; York Mus.] 
