SüBPHYLUM III 



INSECTA 



805 



liighly specialised parasitical group of Coleoptera. 



the Rhyncliopliora is represented in the Cretaceous of Greenland by tvvo genera 



{Archiorhynchus Heer and GurcuUopsis HandL), and much more abundantly in the 



Ku;. 1/ 



Fin. 1555. 



Cyphon vetustus 

 Giebel. Purbeck ; 

 Vale of Wardonr, 

 England. 6/^ (after England 

 Brodie). Brodle). 



Cerylonopsis striata 

 (Brodie). Purbeck ; 

 Vale of Wardour, 



*^/i (after Scudder. Miocene lake beds ; 

 Florissant, Colorado. 5/i. 



Fig. 1556. 

 Paltorhynchus redirostris 



Fio. 1557. 



Apion refrenatum Scudder. 

 Miocene lake beds ; Floris- 

 sant, Colorado. i2/j. 



freshwater Miocene of Florissant, Colorado. The divisions Heteromera, Phytophaga, 

 Lamellicornia, Serricornia, Clavicornia and Adephaga are also fairly well represented 

 at the latter locality. Two English and two American species are shown in Figs. 

 1554-1557. 



Order 18. HYMENOPTERA Linnaeus.^ (Ants, Bees, Wasps, etc.). 



Terrestrial Insects ivith a free head having ivell-developed mandihles ; the first and 

 second maxillae are often elongated, and form in the higher groups a tubulär proboscis 

 adapted for sucJcing. Antennae generally long and multiarticulate. Thorax and first 

 abdominal Segments fused, the rest of the abdomen generally well separated by a con- 

 striction. Legs usually homonomous, with five-^ointed tarsi ; cerci.not distinct ; genital 



Atocus defessus Scudder. Miocene lake 

 beds ; Florissant, Colorado. 2/^. 



Fig. 1559 



Pseudosirex schroeteri Genn. Litho- 

 graphie Stone ; Soienhofen, Bavaria. i/i 

 (after Oppenheim). 



appendages of the female forming either a more or less pronounced terebra or a sting. 

 Four wings of membranous consistency and a reduced number of veins ; the front pair 

 larger than the hind^ which are always smaller and rarely fold up in repose. TFingless 

 forms frequent. 



The earliest members of this order are of Jiirassic age, and it is probable that some 



1 Mai/r, G., Die Ameisen des baltisclien Bernsteins, 

 berg, 1868. — Idem, Studien über die Radoboj-Formiciden. 

 vol. xvii. — Wheeler, W. M., Ants. New York, 1910. 



Schriften der phys.-ökon. Ges. Königs- 

 Jahrb. geol. Reiclisaust. Wien, 1868, 



