BY WALTER W. FROGGATT. 417 



insect world, was followed in 1852 by Dr. Hagen's"^ work deal- 

 ing with the fossil termites of the same localit}^; after describing 

 the different species he states that the climate of Europe must 

 have been much warmer in the Tertiary age than at present to 

 have supported such an extensive insect world, and that out of 

 sixty known species of termites nearly a third of them were fossil. 

 During the years 1855-60 Dr. Hagenf brought out his Monograph, 

 in which he worked out all the then known species, both fossil and 

 recent, among others a fossil species (Termes grandcevus) from 

 England, the exact localit}^ not being given. This work still 

 retains its place as the text book on matters relating to the 

 classification of the Termitidce. 



In 1861 three species were noticed by Hagen in some Sicilian 

 amber obtained by Hope for the Oxford Museum. | 



In 1878 Sterzel described another for which he formed the new 

 genus Mixotermes, from the carboniferous of Lugau.§ 



In 1883 Scudderll published an account of his studies of the 

 fossil termites of the Florissant Tertiaries of Colorado; in this 

 interesting paper he gives a general account of all the fossil 

 termites known from other places, and describes six new species, 

 forming the genus Parotermes, to contain the first three, while of 

 the others one comes in the genus Hodotermes and two in 

 Euterines. 



BrongniartH has made a magnificent addition to our knowledge 

 of fossil termites in his Monograph upon the study of fossil 

 insects, published last year. 



* Ueber die Lebensweise der Termiten und ihre Verbreitung. Konigsb. 

 Naturwiss. Unterhalt., ii. 3, 53-75. 



+ Monographie der Termiten. Linntea Entomol. x. (1855), pp. 1 and 

 270; xii. (1858), 1.; xiv. (1860), 73. 



t Hagen, H.A. Eutom. Weekly Intel!. 10, 151, 168, London, 1861. 



§ Sterzel, on Fossil Termites. Ber. Ges. Chemn. 1878-80. 



Ii Sendder, S. H. The Fossil White Ants of Colorado. Proc. Amer. 

 Acad. Arts and Sciences, 1883, pp. 133-145. 



H Brongniart, C. Recherche pour servir a 1' Histoire des Insectes Fossiles 

 des Temps Primaires, &c. Bull. Soc, dTndus.iMinerale. 1893, vii. (3), 

 p. 127. 



