CESTBACIONTID^. 
281 
1865. Acrodu* lateralis, II. Eck, Form. bunt. Sandst. u. Muschelk. 
Oberschlesien, p. GO. 
1883. Acrodus lateralis, II. E. Sauyage, Bull. Soc. Gdol. France, [3] 
vol. xi. p. 493. 
Type. Detached teeth. 
A small species, the principal teeth not measuring more than 
0-01 in length, very similar to those of A. yaillunloti,\i\i\, often more 
elevated and keeled (according to Schmid). Anterior teeth longi- 
tudinally keeled and much elevated at the broader extremity ; 
superficial wrinkles dichotomously branching. 
Fom. Loc. lluschelkalk : Lorraine, Saxe- Weimar, and Bavaria. 
Lettenkohl and Keuper : Saxe- Weimar (Schmid). Keuper : Thu- 
ringia. 
P. 2133, P. 2161. Small comparatively low-crowned tooth, probably 
of this species ; also one slightly larger, with the surface 
ornament in part reticulate, and obtained from Count 
Munster under the MS. name of A. pumtatus, Miinst. ; 
Benk, Bavaria. EytHon Coll. 
P. 2133, P. 2149. Seven typical teeth, five received from Count 
Munster under the MS. name of A. pmlulosus, Munst. ; 
Bttnk. Eyerton Coll. 
P. 2758, P. 2761. Five teeth; Benk. Enniskillen Coll. 
P. 2133 a. Tooth in matrix ; Laineck, Bavaria. Eyerton Coll. 
P. 2768. Broken tooth; Schlotheim, Gotha. Enniskillen Coll. 
Acrodus keuperinus (Murchison & Strickland.) 
1840. llyhudus keuperinus, Murchison & Strickland, Trans. Geol. Soc. 
[2] vid. V. p. 338, pi. xxviii. fig. 3. 
1840. Tooth of llyhudus, Murchison & Strickland, ibid. fig. 3*. 
IHil. I.uphodns, W. S. Symonds, Old Bones, p. 103. 
18G3. Kemacanthus, S. J. Alackie, The Geologist, vol. vi. p. 243. 
Type. Dorsal fin-spines and teeth. 
Teeth of small size, mostly much elongated, compressed at right 
angles to the long axis. Coronal contour elevated mcsially ; longi-' 
tudinal ridge prominent, dividing the surface into two unequal 
halves ; superficial stri® strong, directly transverse. 
Form. Loc. Keuper ; Worcestershire and Warwickshire. 
P. 2152. Three teeth ; Pendock, Worcestershire. Eyerton Coll. 
P. 2764. Six teeth, two shown, of twice the natural size, in PI. XIII. 
figs. 1,2; Pendock. Enniekillen Coll. 
