516 



Dll. C. P. SONNTAG ON THE ANATOMY 



they are allied to the marginal lobes in Gcdeopithecus, the 

 Pinnipedia and Oetacea. 



Mayer (14) described two small sharp processes, with their 

 ends directed forwards and inwards, beneath the apex of the 

 tongue oi Dasj/pus peba, J), decern-, D. novem-, and 1). octocinctus. 

 They receive prolongations of the lingual musculature. Their 

 function is probably to capture and grip food, and Mayer 

 thought they might open and close and be useful for killing 

 insects. 



Text-figure 50. 



The tongues of the Myrmecophagidse. A : Tamandua tetradactyla ; B.C.D : the 

 front, middle, and back of the dorsum in MyrmecopMga jubata ; E : side 

 view of the tongue in Myrmecophaga showing the sheath (SH.) for the 

 tongue. 



The lateral borders are not distinguishable on those tongues 

 which are cylindrical throughout (Myrmecophaga, Tamandua, 

 Cycloihurits). In Manis the flattened anterior part has a 

 pronounced edge, but the posterior cylindrical part has no 

 distinct edge. In the Dasypodidaj and Orycteropus the lateral 

 borders are pronounced and moderately thick, but the Biady- 

 podidae have borders of considerable vertical depth. Lateral -^ 

 oro'nns are only found in some specimens of Basypus. 



Sulci and Ridges : — Median dorsal sulci are found in Manis, 



