121 



CEPHALOPODA. 



No. 490. Ammonites fimbriatus, Sow. 



This species is characteristic of the group, 

 "Mmhriati." The specimen shows the ornament- 

 al characters of the external shell. From the 

 Middle Lias, Charmouth, England, and now in 

 the private Geological Cabinet of Mr. Ward, Ro- 

 chester. Price, $0.75- 



No. 491. Ammonites fimbriatus. Sow. 



This specimen shows the internal layers of the shell, with the markings cor- 

 responding to those on the exterior. From the same locality as the preceding, 

 and now in the Ward Museum, University of Rochester. Price, $1.00. 



No. 492. Ammonites gigas, Zieten. 



This species belongs to the group "Coronati.' 

 France. 



No. 493. Ammonites . 



From the Upper Oolite, Tonne, 

 Diameter, 9. Price, $1.75. 



This specimen of a species allied to Ammonites gigas, Ziet., shows foliations, 

 septa and siphuncle, and is from the same location as the preceding, and now in 

 the Ward Museum, University of Rochester. Diameter, 18. Price, $4.50. 



No. 494. Ammonites giganteus, Sow. 



This is assigned to the group, " Planulati" of Von Buch. From the Upper 



Oolite, Isle of Portland, England. 



Diameter, 26. Price, $6.00. 



No. 495. Ammonites Goliatlras, D'Orb. 



On pedestal. This specimen, an inner cast of a species allied to the A. 

 modiolm'is, shows well the outer markings of the lobes and the floor of one of 

 the septa. The original, from the Middle Oolite of Dives, France, is in the private 

 Geological Cabinet of Mr. Ward, Rochester. Price, $1.00. 



