Berry and Gregory — Prorosmarus alleni. 



449 



Alachtherium cretsii DuBus (figs. 3,4B)ancl" Trichechodon" 

 Jconinchii Van Beneden from the lower Pliocene (Scaldisien, 

 probably homotaxial with the Plaisancien of the Mediter- 

 ranean region) near An vers in Belgium, and Trichechodon 

 huxleyi Lankester from the " red crag " of Suffolk, England, 

 have been fully described and figured by Tan Beneden in his 



Fig. 4. A. Type of Prorosmarus alleni, lower jaw (left ramus) superior 

 view. B. Type of Alachtherium cretsii, lower jaw (right ramus) superior 

 view. (After Van Beneden.) C. Old male (cf. fig. 2) of Oclobcenus rosmarus 

 lower jaw, superior view. All one-third natural size. 



Description des Ossements Fossiles des Environs d'Anvers 

 (Ann. Mus. roy. d'His. nat. de Belgique, tome 1, 1877). 



