118 



MOLLUSCA. 



No. 468. Ammonites Aon, Munst. 



Bronn and Quenstedt consider this species allied to Ceratites. From the Up- 

 per Trias, St. Cassian, Austria, and now in the private Geological Cabinet of Mr. 

 Ward, Rochester. Price, $0.60. 



No. 469. Ammonites Astierianns, D'Orb. 



From the Neocomian (Lower Cretaceous), Escragnolles, France, and now in 

 the private Geological Cabinet of Mr. Ward, Rochester. Price, $0.50. 



No. 470. Ammonites athletus, Phil. 



From the Kelloway Rock (Middle Oolite), and now in the Ward Museum, 

 University of Rochester. Price, $0.60. 



No. 471. Ammonites bifrons, Bruguiere. 



(Syn. A. Walcotii, Sow.) This species 

 is characteristic of the lower portion of the 

 Upper Lias, and belongs to Von Buch's 

 Group, "Falciferi." The specimen is from 

 Verpilliere (Isere), France, and is in the pri- 

 vate Geological Cabinet of Mr. Ward, Ro- 

 chester. Diameter, 7. Price, $1.00- 



No. 472. Ammonites Batesi, Trask. 



This fine American specimen is from the Cretaceous of California, Cotton 

 Wood Creek, Shasta County, and belongs to the Ward Museum, University of 

 Rochester. Diameter, 15. Price, $3.00. 



No. 473. Ammonites bisulcatus, Brug. 



This Ammonite is frequently known by Sow- 

 erby's name of A. BucMandi. It is the type of 

 the group, " Arietes." From the Lower Lias, Rau- 

 tenberg, Brunswick, and now in the private Geol- 

 ogical Cabinet of Mr. Ward, Rochester. 



Diameter, 13. Price, $0.75. 



No. 474. Ammonites bisulcatus, Brug. 



From the Lower Lias, Wirtemberg, and now in the Ward Museum, Univer- 

 sity of Rochester. Diameter, 8. Price,$0.50. 



No. 475. Ammonites Blagdeni, Sow. 



This fine specimen closely resembles A. coro. 

 natus, and belongs to the same group, "Coronati." 

 It is from the Lower Oolite, Dorsetshire, England, 

 and now in the Ward Museum, University of 

 Rochester. Diameter 7. Price, $1.50. 



