JURASSIC PERIOD. 



455 



The last species of the genus Conularia occurs in the Lias. The beak-like 

 mandibles (jaws) of Cephalopods are sometimes found fossil, and go under the 

 name of Hhyncholites. 



Cephalopods. — "Kg. 702, Yiew, reduced, of the complete osselet of a Belemnite, — side-view; 

 703, Dorsal view of same; 704, a, B. paxillosus; 705, B. pistilliformis ; 706, Ink-bag. 



3. Articulates. — (or.) Crustaceans. — Genera Eryon, Glyphea, etc., and Cir- 

 ripeds of the genus Pollicipes, here first found, (b.) Insects. — Coleopters, gen. 

 Elater, Melolonlha, Berosus, etc.; Neuropters, gen. Ephemera, Libellula, Ortho- 

 phlebia, etc.; Orthopters, gen. Gryllus, etc.; Hemipters, gen. Cicada, Cimicides, 

 etc. ; Dipters, gen. Asilus, etc. 



4. Vertebrates.— (a.) Fishes.— Fig. 70 



restoration of the fish ; fig. 707 a, scales. 



(b.) Reptiles. — All the Reptiles have biconcave vertebrae 



JEchmodus (Tetragonolepis), a 

 Fig. 708, Tchtnyo- 



