132 



Cincinnati Society of Natural History. 



from three eighths to live eighths of iin inch. E^-es small, rather pro- 

 minent, and situated opposite the middle lateral lobes of the glabella. 

 Movable cheeks, with rounded and ver}'^ thick lateral margins, defined 

 by a distinct marginal furrow, which is continuous with that separa- 

 ting the frontal extension from the anterior end of the glabella; here 

 the furrow is very narrow and deep. Fixed cheeks provided with a 



Fig. 1. 



Fig. 2. 



Fig. 3. 



deep, broad, furrow along the posterior margin. Facial sutures direct- 

 ed forward anteriorly to their intersection of the margin in nearly par- 

 allel lines; posterior to the eyes they bend toward the glabella, then 

 abruptly outwards, and run nearly parallel with the posterior margin 

 of the shield to a point about one half the distance from the lateral 



