CEPHALOPODA. 



115 



No. 457. Belemnites Owenii, Pratt. 



Guard and pliragmocone showing the nacreous surface. An unusually large 

 and fine specimen. From the same locality as the preceding. Original in the 

 private Geological Cabinet of Mr. Ward, Rochester. 



Size, 14 x5. Price, $1.75. 



No. 458. Belemnites giganteus, Schioth. 



The B. gigtinteus (the B. maximus of Giebel), is chiefly remarkable for its 

 great size. It belongs to D'Orbigny's group, ''Acuarii," characterized by a groove 

 at the end only. This specimen is from the Middle Lias at Ehningen, Wirtem- 

 berg, and is in the private Geological Cabinet of Mr. Ward, Rochester. 



Size, 24 x 4. Price, $2.00. 



No. 459. Belemnites giganteus, Schioth. 



Phragrnocone, showing the thin transverse plates dividing it into a series of 

 narrow air-chambers gradually diminishing towards the apex. The phragrnocone 

 was evidently designed to adjust the specific gravity of the animal. The speci- 

 men is from the Lower Oohte, Wirtemberg. Original in the private Geological 

 Cabinet of Mr. Ward, Rochester. Price, $0.50. 



No. 460. Belemnites dilatatus, Biainv. 



Guard. This Belemnite has a compressed guard and the longitu- 

 dinal furrow situated on the margin opposite to the siphuncle. The form 

 is characteristic of the Neocomian beds. These specimens (three in 

 number) are from the Lower Neocomian (Cretaceous), France, and 

 belong to the Ward Museum, University of Rochester. Price, $0.75. 



No. 461. Belemnites acuarms, Schioth. 



This guard, distinguished by the want of lateral furrows, and by its extreme 

 length and slenclerness, was found in the Lias at Whitby, England. Original in 

 the private Geological Cabinet of Mr. Ward, Rochester. 



Size, 18 x 1. Price, $0.50. 



No. 462. Belemnites lateralis, Phillips. 



Guard, from the Speeton Clay (Lower Cretaceous), Yorkshire, England. 

 Original in the private Geological Cabinet of Mr. Ward, Rochester. 



Size, 6x2. Price, $0.50. 



No. 463. Beloteuthis subcostata, Miinst. 



This flattened Belemnite receives its generic name 

 from its supposed affinity to the riving Squid. The osse- 

 let or rudimental shell, represented in this specimen, is 

 broad and rounded at each end. It was found in the Lias 

 at Holzmaden, Wirtemberg. Size, 6x3. Pftfee, $0.60. 



