256 APPENDIX. 



the curious falciform spines observed in E.falcifer and 

 eloti." With reference to the falciform spines, I have 

 already shown that these organs do exist in Ripersia 

 terrestris. I have not seen Kiinckel's description of 

 Rhiz&cus, but it is evident from what Mr. Cockerell 

 says of it that Ripersia terrestris possesses an antennal 

 formula like that of Rhiz&cus. I do not, however, see 

 the necessity for adopting Rhizdscus, more especially so 

 as Ripersia halophila, a very closely allied species, 

 possesses the normal antennal formula as found in the 

 typical species of Ripersia. 



APTEROCOCCUS FRAXINI (page 210). 



Mr. Cockerell * gives priority to Fonscolombia 

 fraxini (Kalt.), and says that " this insect was first 

 described by Kaltenbach in 1874. In 1895 Mtsche 

 proposed for it the sub-generic name Pseudocliermes. 

 Newstead, when describing it as new, used the same 

 specific name as that of Kaltenbach." As I have not 

 been able to see Kaltenbach's description of his F. 

 fraxini I am not prepared either to accept or to dispute 

 Mr. Cockerell' s claim to Kaltenbach's priority. 



GENUS Coccus (page 221). 



The species of cochineal placed so long in the genus 

 Coccus are now referred, by Mr. Cockerell, to Dacty- 

 lopius (see Dactylopius in Appendix). 



* ' Proc. Acad. Nat. Sci. Philad./ 1899, p. 264. 



