I^ofices of Memoirs. — G. B. Buckton on Fossil Aphidce, etc. 229 



B. Hetbropxera : Hydrocorince (Water-bugs), Geocorisa (Land- 

 bugs). 



II. In the "Monograph of the British Aphides," vol. iv. 1883, 

 Eay Society, at pages 144 — 178, Mr. Buckton gives a sketch of the 

 geological occurrences of Insects in general, and of the Aphidince in 

 particular, and finds that the Hemiptera are neaidy as ancient as the 

 Coleoptera, and apparently preceded the Diptera, Hymenop)tera, and 

 Lepidoptera. The earliest known Aphides have been recognized 

 by Westwood, as collected by Brodie in the Pui-beck beds of Wilts 

 and Dorset. In the Eocene Tertiaries of Europe Aphis occurs fossil ; 

 and even if not present, its enemies who fed on it (Syrphidce and 

 Coccinellida) and others (Ants) that sought its honey-dew, have left 

 their remains. At Radaboj in Croatia, and CEningen in the valley 

 of the Rhine, Aphides are present in Miocene strata. Indeed in the 

 Swiss Miocene 136 species are known. The Aphididts of North 

 America have been described by Scudder from the White-River 

 District in Utah, and the Green-River-Station in Wyoming; also 

 from the Florissant-Lake strata in Colorado, the last giving eight 

 species of Aphidince. The many species of Aphides found in Amber 

 have occupied the author's attention (pages 160-168). He gives 

 a lucid account of what has been published about Amber and its 

 origin ; and indeed he also alludes to what geologists have deter- 

 mined about the Tertiary and other strata in which Ajyhides occur, 

 and especially about the flora represented by the plant-remains 

 accompanying these Insects at the several localities. 



Plate cxxxi. contains figures (after Berendt) of Germar and 

 Berendt's species from Amber ; namely, three of Aphis (?) and two 

 of Lachnns (?), carefully described in the text. 



In plate cxxxii. Mr. Buckton figures, from earlier drawings, one 

 Aphis (?) from the Purbeck ; one from the Tertiary of Amberieux 

 (Ain) ; one Aphioides from Amber ; four of Aphis (?) and three of 

 Lachnus (?) from Radaboj ; and a Pemphigus (?) from Q3ningen. 



Some fossil Aphides from Florissant, Colorado, are figured (after 

 Scudder) in plate cxxxiii. Five new genera are described by 

 Buckton, at pages 176-178, as Siphonophoroides (2 spp.), Archi- 

 lachnus, Anconatus, Schizoneuroides, and Pterostigma (1 sp. each). 



III. In Mr. G. B. Buckton's " Monograph of the British Cicadce or 

 Tettigidce," 1891, Macmillan & Co., London and New York, some 

 fossil forms are referred to in vol. ii. at pages 164-184. 



After some remarks on the bibliography of Fossil Insects, their 

 occurrence in freshwater rather than in marine deposits, their local 

 abundance in isolated groups or masses, and the possible conditions 

 of preservation, the author observes that the Hemiptera lived in 

 Carboniferous times in the American and British areas, contem- 

 poraneously with the gigantic Dycteoptera (Cockroaches) and 

 Coleoptera (^Buprestidce) which crawled amongst the Equisetums 

 and Tree-ferns of that early period. A few Hemipterous remains 

 are described by Scudder from beds below the Lias or Ehastic in 

 Colorado ; and some specimens from the Ehastic at Schonen in, 

 Sweden have been referred to Cirnex and Cicada. From the Rhgetic (?) 



