FRANCIS WALKER. DR. F. FIBBER. XXVll 



perusal, as touching on the relative position and the 

 natural history of the insect.* 



Dr. Germar paid also much attention to this group ; 

 and in numerous memoirs in his ' Magazine of Ento- 

 mology ' (vols. iii. and iv.) he describes a great many 

 species. 



The only figured examples that we possess of British 

 Cicadinae are those drawn and engraved by J. Curtis, 

 in the 'British Entomology,' from 1823 to 1840. 

 Like the rest of his drawings, they are all beautifully 

 executed and coloured. He engraves about sixteen 

 figures in illustration of as many genera, but, if his 

 figures may be criticised, the proportions of the insects 

 are not always faultless. A diagnosis of the different 

 species is given, but even with this help the species 

 cannot always be decided on with certainty. 



In 1858 the authorities of the British Museum pub- 

 lished, under the superintendence of Francis Walker, 

 a • List of the Homopterous Insects in the National 

 Collection.' Amongst these are numerous examples 

 of Cicadinae, the greater number of which, however, are 

 foreign. The few British species are only incidentally 

 mentioned. Mr. F. Walker makes three Orders, viz., 

 Cicadina, Phytothires, and Physopoda. In the first 

 Order he includes the Cicadinae under four Families. 

 In the second he places Psylla, Ap]iis, and Coccus, and in 

 the third Thrips. The above four Families of Cicadinae 

 are Stridulantia, Fulgorina, Membracina, and Cicadel- 

 lina, all of which are represented by British insects. 

 Mr. Walker's list probably requires a modern revision, 

 with due reference to his type-specimens. 



Dr. Flor published his 'Livonian Hemiptera' (Rhyn- 

 chota Livlands) in 1861. Unfortunately none of the 

 typical forms collected by him are now in existence. 

 His work may be studied for the descriptions of the 

 insects he names, but for want of figures the student 

 is often plunged in doubt. 



■■•= See Westwood's ' lutroduction,' p. 417. 



