1262 



NEW YORK STATE MUSEUM 



PLATE 12 



Hughmilleria socialis sp. nov. 



Page 1091 



1 The two posterior endognathites in perfect preservation ; and 

 fragments of the two anterior ones. Drawing inverted. x3 



2 Anterior portion of cephalothorax showing dehiscence of 

 epistoma through middle and the anterior ends of the gnatho- 

 bases. x3% 



3 Complete swimming foot. x3 



4 Complete endognathite showing coxal joint, articulation of 

 second joint and lobe of sixth joint. x3% 



6, 7 Two metastomata, showing slight variation in form. Nat- 

 ural size 



8 Section which shows cylindric form of postabdomen. 

 Natural size 



Dolichopterus ? ? 



5 Metastoma of an undetermined form. x3% 



