PLATE XVI. 
Page. 
Pig. 1 and 2. Hymenopiiyllites Clarkii, Lesqx . 416 
Pig. 3 and 5. Hymenopiiyllites tiiallyfoemis, Spec, nov. 417 
Pig. 4. Scales of the same, enlarged. 
Pig. 6. Hymenopiiyllites inflates, Spec, nov.414 
Pig. 6 a. Inflated lobe, of the same. 
Pig. 7. Hymenopiiyllites atinascens? LI. and Ilutt.414 
Pig. 8. Hymenopiiyllites adnascens, LI. and Hutt,.. .. 
