EURYPTERUS. 



PPP. 25 



Fig. 2. — EuRYPTERUS (Anthraconectes) Mazonensis -nat. size. 



"a, b, c. Crusbed and broken legs as they appear in the specimen, tlie di- 

 " visions not being all natural articulations. 



"/t, h, h, h, h. Impressions of angular ends of tlio dorsal half of body seg- 

 " ments. 



" m. Hypostoma in place; in^, the same enlarged to sliow tlie scale-like 

 "sculpturing. 



" P. One of the paddles or swimming feet in a broken condition. Its divi- 

 " sion at i seems to be a natural articulation. 



"<7, g. Basal joints of same; x, enlarged surface-sculpturing of Iho latter. 



"AT. Mesial appendage of the oi)erculum ; 1, S, .i, its apparent articula- 

 "tionsj 8, s, two little accessory pieces; x, x, t, t, lateral alae of operculum. 



"o. Position of rnouth." 



. After descril)ing the fossil and its parts the aiithors re- 

 mark : "From some of the cliaracters mentioned above it 

 "will be seen tliat this fossil differs from thetyjiical forms 

 "of Euryj)terus, particularly in the great length and sini- 



