130 MOLLUSCA. 



No. 553. G-oniatites expansus, Vanuxem. 



From the Goniatite limestone (Devonian), Manlius, N. Y. 



Size, 9x7. Price, $1.00. 



No. 554. G-oniatites ixion, Hall. 



From the Lower Carboniferous, Rockford, Indiana. The 

 original of this fine, well-marked specimen is in the Ward 

 Museum in the University of Rochester. Price, $0.50. 



No. 555. Hamites attenuatus, Sow. 



The shell of Hamites was hook-shaped or bent upon itself more than once ; 

 the courses separate, and the inner ones probably broke away in the progress of 

 its growth. From the Gault, Folkestone, England, and now in the private 

 Geological Cabinet of Mr. Ward, Rochester. Price, $0.75. 



No. 556. Hamites ( Hamulina ) Astierianus, D'Orb. 



From the Upper Necomian Barreme, France, and now in the Ward Museum, 

 University of Rochester. Size, 11 x4. Price, $1.25. 



No. 557. Hamites ( Hamulina ) Astierianus, D'Orb. 



From the same locality as the preceding. 



Size, 20 x 3. Price, $1.50. 



No. 558. Hamites ( Hamulina ) cinctus, D'Orb. 



jnT ^ m m , nnmm(tTr H CT7 77: ^ The genus Hamulina was created by D'Orbigny 



fTfflWlTITMriTnTTM , ??^M^^ to include the Neocomian Hamites. From the 

 UtJUi.lJkUUUUUwiiUAWMi^ Upper Neocomian (Cretaceous), Barreme, Basses 

 Alps, France, and now in the private Geological Cabinet of Mr. Ward, Rochester. 



Size, 14 x 4. Price, $1.75. 



No. 559. Hamites ( Hamulina ) cinctus, D'Orb. 



From the same locality and Museum as the preceding. 



Size, 10 x 4. Price, $1.50 



No. 560, Helicoceras rotundum, Sow. 



The whorls of this genus, when not 

 distorted by pressure, are separate and spiral, 

 not discoidal. From the Gault (Lower Creta- 

 ceous), Folkestone, England, and now in the 

 private Geological Cabinet of Mr. Ward, Ro- 

 chester. Price, $0.60. 



No. 561. Scaphites binodoSUS, Romer. 



From the Upper Chalk, Haldem, Westphalia, and now in the private Geo- 

 logical Cabinet of Mr. Ward, Rochester. Price, $0.60. 



