PLATE II. 



HoMALONOTUS DeKAYI. 

 Page 7. 



See Plates 3, 4 and 5. 



individual, showing' a strongly annulated and trilobate 

 lium. 



Hamilton group. Madison county. 



tly trilobate and nearlj entire individual. 

 Hamilton gn -|>. La y, near /Sherburne, Chenango cov/nty, 



fa somewhat larger, enr lied individual, 

 me. 

 Hamilton group IS ■ Madison county. 



Fiw. ;". An individ i iii more ad I of growth, retaining the trilobate pygidium. The 



i. what restored upon the leftside. 

 Kami ■. Onondaga county. 



and uncompressed individual, preserved as an internal cast. 

 Han ip. Madison o/r Otsego* county. 



le average normal adult size attained by specimens from the arenaceous 

 is preserved a- a cast of the lower surface, and shows the conspicuous 

 trans\ ipou the segments of the thorax. The annulations of the pygidium are 



much more than they are made to appear in the drawing. 



Hamilton group. Mi it;/. 



8. An | nowing bu1 ten, instead of thirteen thoracic segments. The cephalon has ap- 



par< pushed back so as to cover the first three segin. 



evation of the body and the prolongation of the anterior and 



Hamilton group. Madison county. 

 ierfec1 cephalon. 



Hamilton group. East Worcester, Otsego county. 

 I 1. A cephalon (Vein the soft shales, in which the facial suture is somewhat thrown backward at the 

 the crushing of the frontal doublure. . The anterior portion of the suture 

 is more transverse in the specimen than is represented in the drawing. 

 Han up. Darien, Genesee county. 



: 



Hamilton group Ca wnna, Madison county. 



