CEPHALOPODA. 



125 



No. 517. Ammonites Martinsii, D'Orb. 



From the Lower Oolite, Bridport, England, and now in the private Geologi- 

 cal Cabinet of Mr. Ward, Kochester. Diameter, 10in. Price, $1.50. 



No. 518. Ammonites Millesianus, D'Orb. 



From the Lower Chalk (Cretaceous), Rouen, France. 



Diameter, 8. Price, $1.50. 



No. 519. Ammonites modiolaris, Luid. ,^--^" "'•" 



Also known as A sublmvis, Sow. From 

 the Kelloway Rock, Wiltshire, England, and 

 now in the Ward Museum, University of Roches 

 ter. Price, $0.75 



Price, $0.30. 



No. 520. Ammonites modiolaris, Luid. 



Young form, from the same locality and Museum. 



No. 521. Ammonites obtusus, Sow. 



This Ammonite is well-known from the Lower Lias of England, where the 

 casts of the interior, preserved in beautifully colored calc spar, are known as 

 " Tortoise-shell Ammonites." It belongs to the group " Arietes." This specimen 

 is from the Lower Lias, Charmouth, England, and is now in the private Geologi- 

 cal Cabinet of Mr, Ward, Rochester. Diameter 9. Price $1.50. 



No. 522. Ammonites Parkinsoni, Sow. 



This shell, so characteristic of the inferior Oolite of Europe, probably be- 

 longs to the group " Dentati," the head-quarters of which are in the Cretaceous 

 series. From Bridport, England, and now in the private Geological Cabinet of 

 Mr. Ward, Rochester. • p rice) | .60. 



No. 523. Ammonites peramplus, Mant. 



This gigantic specimen is from the Chalk, Germany, and is now in the 

 private Geological Cabinet of Mr. Ward, Rochester. Diameter, 81. Price: $6.00. 



