
TRICHECHIDZ. 199 
best that the generic name Alachtherium should be applied, as Tri- 
chechodon has been withdrawn by Lankester and has been used in 
another sense by Van Beneden. The originals of the casts of 
A. cretsi 
and the next species were obtained from the Antwerp 
Crag, and are preserved in the Brussels Museum. 
M. 1148. 
M. 1166. 
M. 1151. 
M. 1170. 
vo 1169. 
M. 1168. 
M. 1171. 
M. 1172. 
M. 11738. 
M. 1174. 
M. 1175. 
M. 1176. 
Cast of the hinder portion of the cranium. The original 
is figured by Van Beneden in the Ann. Mus. R! Hist. Nat. 
Belg. vol. 1. pl. i. fig. 1. Purchased. 
Cast of the left ramus of the mandible, showing seven 
teeth. The original is figured by Van Beneden, op. cit. 
pl. i. figs. 1, 2. Purchased. 
Cast of the left humerus. The original is figured by Van 
Beneden, op. cit. pl. ii. figs. 1, 2. Purchased. 
Cast of the distal part of the left ulna. The original is 
figured by Van Beneden, op. cit. pl. u. fig. 5. Purchased. 
Cast of the proximal part of the right radius. The 
original is figured by Van Beneden, op. ext. pl. iv. figs. 5, 6. 
Purchased. 
Cast of the right humerus of a young individual. The 
original is figured by Van Beneden, op. cit. pl. iv. figs. 3, 4. 
Purchased. 
Cast of the left ium. The original is figured by Van 
Beneden, op. ct. pl. v. fig. 5. Purchased. 
Cast of the right femur. The original is figured by Van 
Beneden, op. cit. pl. v. figs. 1-3. Purchased. 
Cast of the left femur of a young animal. The original is 
figured by Van Beneden, op. cit. pl. v. fig. 8. Purchased. 
Cast of the distal part of the left tibia. The original is 
figured by Van Beneden, op. ct. pl. vi. figs. 1-3. 
Purchased. 
Cast of the shaft of the tibia of a young animal. 
Purchased. 
Cast of the left astragalus. The original is figured by 
Van Beneden, op. cit. pl. vi. fig. 4. Purchased. 
