566 MANUAL OF NATURAL HISTORY. 



belonging to the family Lepidotidce, were also nu- 

 merous. 



Remains of Crustaceous animals have been found 

 in the lithographic schists of Solenhofen, especially 

 numerous genera of the family Sphwrodermidce, as 

 Alvis, Naranda, Sculda, Noma, JJrda, and Reckur ; 

 several genera also of the Prawn-family, Palcemo- 

 ■nidw, as Busa, Blaculla, Saga, Udora, &c. ; and 

 of the Lobster-tribe Astacidce, as Magila, Orphnea, 

 Brisa, Bolina, Aura, &c., have been discovered and 

 described by Count Munster, from the Oxford stage 

 of Bavaria. Among Insects, the elytra of Beetles 

 belonging to the families Prionidce, Blapsidce, and 

 Buprestidce, have been found. More than one 

 hundred and thirty species of Gasteropodous Mol- 

 lusca occur in this group, chiefly belonging to the 

 genera Trochus, Patell<a, Turbo, Turritella, Actceon, 

 Melania, Natica, Rostellaria, Gerithium, and Ptero- 

 cera, which are recent, and to Nerinwa, Cirrus, Pleu- 

 rotomaria and Trochotoma, which are extinct genera. 

 The bivalve Pholadomya, and the extinct Gryphcea, 

 known from Ostrea by its curved beak and flat 

 upper valve, are found in the Oolite ; in the Kim- 

 meridge-elay the latter shells form entire layers ; 

 species are also common in the Shanklin sand of 

 the Isle of Wight. Some Cephalopods are likewise 

 present, especially longitudinally-striated Nautili; 

 the crosier-shaped A ncyloceras; and the spiral Htli- 

 oceras, with the whorls detached. Besides these, 

 may be mentioned the curious genus Biceras of the 

 Alps, Avicula, Gypricardia, the brachiopodous 



