PATAGONIAN EXPEDITIONS : PALEONTOLOGY. 



EXPLANATION OF PLATE XXI. 



PAGE 



Fig. i. PROPAL/EOHOPLOPHORUS AUSTRALIS : Portion of cephalic shield (No. 



15,212). The anterior end of the shield is to the left. . . .115 



Fig. 2. EUCINEPELTUS CRASSUS, type : Cephalic shield (No. 15,865) . . .152 



Fig. 3. EUCINEPELTUS COMPLICATES, type : Cephalic shield : Amer. Mus. Nat. 



Hist. (No. 9,248) 151 



Fig. 4. EUCINEPELTUS PETESTATUS, type: Cephalic shield (Ameghino collection). 149 



Fig. 5. COCHLOPS DEBILIS : Cephalic shield in place (No. 15,592); the rostrum 



has been cut off short to gain space . . . . . . . 1 40 



Fig. 6. ? ASTEROSTEMMA DEPRESSA : Tail-sheath, X ^ (No. 16,001) . . . 154 



All figures, except fig. 6 natural size. 



(VOL. v) 



