304 - THE ENTOMOLOGIST. 
Ichneumon; E. oceupator, male, especially resembles the 
luctatorius group. In EHzophanes the gastroceli are hardly 
distinguishable: this is a good distinctive characteristic. Both 
our species, in which the sexes differ greatly, are well figured by 
Vollenhoven (‘Pinacographia,’ pl. 2, figs. 3 & 4). The common 
i. exulans, which is better known by its female name (hilaris), 
Vollenhoven tells us, was bred in June from Tapinostola Elymi. 
Holmgren first bred EH. occupator from Nonagria typhe, and 
Swierstra bred it from Nonagria sparganii (teste Vollenhoven) ; 
while Vollenhoven also bred it from N.typhe. In the third week 
of August, 1879, Mr. W. R. Jeffrey bred this species from British 
N. sparganw pupe. 
(To be continued.) 
NOTE ON THE GENUS ORTHEZIA. 
By F. Bucuanan Wuite, M.D., F.L.S. 
As Mr. H. C. Hart in recording, in the last number of the 
‘Entomologist’ (Hntom. xii. 284), the occurrence in Ireland of 
Dorthesia chiton alludes to me, I am tempted to make a few 
remarks on this interesting insect. 
In the first place there is a difference of opinion as to which 
is the correct generic name, Orthezia or Dorthesia. The name 
was created in honour of the Abbé d’Orthez, and was written 
* Orthezia”’ by Bosc, who, in the ‘Journal de Physique’ for 1874 
(p. 171), published a memoir, entitled ‘‘ Description de l’Orthezia 
characias.” In the same journal for the following year, 1875 
(p. 207), the Abbé d’Orthez himself changes the orthography of 
the name to “ Dorthesia,’ and many authors have adopted his 
name. Bosc, the author of the genus, entitled it Orthezia, and no 
other can be used, as Orthezia and Dorthesia, considered as 
scientific names, are quite different words. In adopting Orthezia 
I only follow Amyot, Serville, and Signoret. 
In the second place as to the species. Of these (excluding 
one or two extra-Kuropean ones) no less than ten or eleven have 
been described, but almost all of them seem to be identical with 
Urtice, L. (Aphis urtice, L., Syst. Nat. 11. 733, 30); or at least 
that is the conclusion that Signoret, in his recent classic ‘ Essai 
sur les Cochenilles,’ arrives at. He says that he has met with 
