Fig. 1 
Fig. 2 
Fig. 3 
Fig. 4 
Fig. 5 
PLATE III. 
Homalonotus Dekayi. 
See Plates 2, 4 and 5. 
. A small individual from the soft shales, retaining a portion of the crust and showing the median 
frontal plate enclosed by the branches of the facial sutures upon the epistomal doublure. In 
the drawing the annulations of the pygidium are too strongly represented. 
Hamilton group. Bellona, Yates coiinty. 
. A cast of the lower sui-face of a larger individual, showing the median plate and a jiortion of 
the hypostoma displaced from its normal position. 
Hamilton group. Near Leonardsville, Madison coiunty. 
. A cast of the lower sui’face of an almost entire specimen. 
Hamilton group. Madison county. 
. A specimen from the soft shales, retaining twelve thoracic segments with the pygidium, and pre- 
seiuung the crust. 
Hamilton grouj). Canandaigua Lake. 
. A block of arenaceous shale, showing the dismembered parts of a large individual. 
Hamilton group. Madison county. 
