1886.1 247 



Ivy, Lecan. maculatum, Sign. 



Juniper, Diaspis Carueli, Targ., D. juniperi, Bouclic. 



Laurel, Lecan. elongatum, Sign. 



Lime, Aspid. til ice, Sign., My til. linearis, GcofP. 



Mistletoe, Aspid. visci, Sehrk. 



Oak, Aspid. qtterctcs, Sign., Lec.fuscum, Geoff. 



„ evergreen, Aspid. ilicis, Sign., Chionaspis PlancJioni, Sign. 

 Oleander, Aspid. nerii, Bouche. 



Peach, Diaspis Leperii, Sign., Lee. rotundum, Sign., Leo. rugosum, Sign. 

 Pear, Diaspis ostrecsformis, Curt., S imago in April. 



Pine trees, Leucaspis pini, Hart., L. ^ignoreti, Taxg., PhysoJcermes hemicryphus, Dahn. 

 Poplar, Aspid. sptircatiis, Sign., Chionaspis populi, Baer., Fulvin. populi, Sign., P. 



tremulce, Sign. 

 Rose, Diaspis ros<e, Sandb. 



Sallow, Lee. caprcBcs, Lin., Fulvin. salicis, Bouche. 

 Spindle {Euonymus europceus), Pulvin. euonymi, Gour. 



„ „ Japonicus), Chionaspis euonymi, Comst. 



Spruce fir, Lee. abietis, Geoff., Mytil. abietis, Schrk. 

 Walnut, Mytil. juglandis, Sign. 

 Wistaria, Lee. tcistaricB, Sign. 

 Wood-rush (LuzulaJ, Signoretia luzulce, Sign. 



I have used the nomenclature in general employment ; much 

 might be said about the wide-spread epidemic, of which there are here 

 some examples, which induces the creation under abstract names of 

 so-called genera (frequently doubtfully valid even to their authors) 

 for species (often only a single one) which differ infer se in the smallest 

 characters, thus burdening science quite unnecessarily with thousands 

 of names which are a hindrance to the proficient and a source of 

 dismay and embarrassment to the student. But the disorder, to call it 

 by no harder name, seems incurable, and this is neither the time nor 

 the place to discuss the subject. 



Yet a word may be permitted on the way in which some generic 

 names of Linne have been appropriated when his genera have been 

 dismembered ; I refer to Coccus and CJiermes. Eespecting the Coccidcc 

 Westwood wrote (Mod. Class. Insects, ii, 447), " The type of this 

 family (and for which, of course, the generic name Coccus must un- 

 questionably be retained, instead of Illiger's name Lecaniuin) is the 

 Coccus ilicis., Lin., a species which lives upon the Quercus or Ilex 

 coccifera., and which was the insect which supplied the famous dye 

 KOKKOS of the Grreeks, Coccum or Coccus haphica of the E-omans 

 (whence the origin of the terms Coccus and Coccimcm given to cloth 

 dyed with this production, whilst persons wearing this kind of cloth 

 were said by the Komans to be Coccinati ) ; the Cliermes or Kermes of 



X 2 



