SUB-PHYLUM III 



INSKCTA 



Of tlu- ;u[U,itic bugs, a number of families an- met \\itli in tin- .lur.i, -n-li 

 Nepidae, Hydrometridae, Reduviidae, Lygaeidae, Cor- 

 Thripsidae, and Cimicidae. Scarabaeides (Fig. 1454) occurs 

 in the Bavarian Litln^rajilii.- Slate-. Kxainpltt of Tertiary 

 genera are: Naucoris (Fig. 1455), Harpactor (Fig. 1456), 

 Cephalocoris (Fig. 1457), Berytopsit, Acanthosoma, and Eothes. 



Order 5. COLEOPTERA. Beetles. 



Fore wings (elytra) chitinous, thick, with obsolete nervures ; 

 hind wings membranous, folded, with nervures connected only at 

 wide intervals. Prothorax freely movable. Mouth parts mastica- 

 tnn, Metamorphosis complete. 



Coleopterous remains have not been recognised with 

 certainty in the Palaeozoic. Dipeltis is of doubtful position, 

 but bears a certain resemblance to the larvae of beetles. During the Mesozoic and 

 Tertiary, however, this group occupies a prominent 

 position among insects. 



Remains of Curculionidae, Chrysomelidae, and 

 Buprestidae are found in the Trias of Vaduz and 

 Rutihard, near Basle ; and 

 the same families occur more 





v 



Flo. 1458. 



Cyphon vetustus, Giebel. 

 Purbeck ; Vale of Wardour, 

 England. /i (after 

 Brodie). 



FIG. 1459. 



Cerylon striatum, Brodie. 

 Purbeck ; Vale of Wardour, 

 England. J/i (after 

 Brodie). 



Flo. 1460. 



Fossil Beetles from the Oligocene 

 marls of A ix, Provence. A, Hipporhinu* 

 Jleeri, Oustalet. 2/j. If, Triphytliu 

 'ustalet. 8/1. C, Htfetinus 

 . 4/,. 



abundantly in the Rhaetic and chief divisions of the Jura in Europe. Among the 

 richest Mesozoic localities may be mentioned : Schambelen in Aargau (Lias) ; Dob- 

 bertin, Mecklenburg (Lias) ; Stonesfield Slate and Purbeck of England (Figs. 1458, 



Fi.;. 1463. 



O 



. 



.\l>'i<i?i l ifi'i ;i"t,' III, SdlddlT. 



Hiocciie Florissant, Colorado. 



fruiii oli^ocene amber of East 

 .1. /;;-,>,,/.< i,;i..i,,,.<, \! 

 Ji, Ptilodaetyloidtt .*ti].iilicomit t 

 /,. C, Pavttoides Mengci, 



Fio. 



Paltorhyndit 



Scudder. Oligocene; Flo- 

 rissant, Colorado. /i. 



1459). The Bavarian Lithographic Slates yield comparatively few, and fur the most 

 part poorly preserved remains of beetles (Pseudohydrophilua, Chrysobothris). 



A marked increase took place during the Tertiary, and by far the greater 

 number of species are referred to still living genera. The Oligocene fresh -w.it IT 

 deposits of Aix in Provence (Fig. 1460), and of Florissant, Colorado (Figs. 1461, 1462), 

 are especially rich in species; also the amber of East Prussia (Fig. 1463), Miocene 



