36 
SELACHII. 
Type. Detached tooth. 
Crown of principal teeth very high, the lower two thirds of the 
posterior face being covered with numerous delicate transverse 
parallel rugae. 
Form. Sf Loc. Permian (Marl Slate, Kupferschiefer): Germany, 
N. England. 
P. 3034. Portion of the dentition of both jaws, naturally associated. 
The three median longitudinal series are preserved in one 
jaw, but of the opposing dentition only two transverse 
rows from the hinder part of these series and the adjoining 
outer series are preserved; Riechelsdorf, Hessen. 
Enniskillen Coll. 
P. 3035. Broken teeth, cartilage, and shagreen; Riechelsdorf. 
Enniskillen Coll. 
P. 1374. Four much broken groups of teeth, with remains of calcified 
cartilage and shagreen; Riechelsdorf. Egerton Coll. 
43424-5. Very complete, though much broken dentition, associated 
with shagreen, and preserved in counterpart; the shagreen 
granules are much larger immediately round the mouth 
than elsewhere. Also a more fragmentary specimen; 
Riechelsdorf. 
Presented by Kenneth Murchison , Esq., 1872. 
38592, 41084. Broken teeth, cartilage, and shagreen; Riechelsdorf. 
Purchased , 1864. 
P. 1375. Portions of dentition, associated with shagreen and frag¬ 
ments of calcified cartilage, in nodule; Ilmenau, Thiiringia. 
Eqerton. Coll. 
t/ 
P. 3033. Teeth described and figured by Hancock and Howse, loc. 
cit. p. 59, pi. ii. fig. 1; Midderidge, Durham. 
Enniskillen Coll. 
P.1373. Tooth; Cullercoats, Northumberland. Egerton Coll. 
Janassa imguseformis (Atthey). 
1868. Climaxodus linguceformis , T. Atthey, Ann. & Mag. Nat. Hist. [4] 
vol. ii. p. 321. (Tyneside Nat. Field-Club, Oct. 9th, 1867.) 
1868. Climaxodus ovatus , T. P. Barkas, Geol. Mag. vol. v. p. 495. 
1869. Climaxodus vermiformis , T. P. Barkas, Geol. Mag. vol. vi. p. 381. 
1870. Janassa linguceformis , A. Hancock & T. Atthey, Nat. Hist. Trans. 
Nortkumb. & Durham, vol. iii. p. 330, pi. ix. 
