171 
[January, 
hue of the legs and antennae ; the tarsus but little more than half 
the length of the tibia; the antennae longer and thinner than in O. 
cataphracta , the terminal joint tapering; the broad caudal lamella, 
which follows the two dorsal ridges, projecting very much in the rear, 
but slightly rounded posteriorly, its whole surface covered by a large 
fascicle of long, longitudinal, thin, sharp-edged lamellae, into the base 
of which the posterior lamellae of the border merge, these latter being 
longer throughout than in the previous stages of the insects’ life. To 
this type belong, as one distinct species (O. urticce ), the 9 of the 
following : — 
9 . Aphis urticce , Linn., S. N., 736, 30 (1767). 
[Frisch, Besclir. v. allerly Insecten von Teutschland, viii. 34, t. 17 
(1730)]. 
? . Coccus Jloccosus, De Geer, Mem., vii, 604, 9, pi. 44, fig. 6 (1778). 
9 . Orthesia characias, Bose, Journ. de Phys., xxiv, 171, pi. 1 (1784). 
<? 9 • Dorthesia characias, l’abbe d’Orthez, id., 207, pi. 1, fig. 14—16 (1785). 
& ‘ » » WeBtw., Intr. Mod. Class., ii, 445, frontisp., fig. 8 (1840). 
9 . Coccus duhius , Fab., E. S., iv, 228, 27 (1794), Panz., F. G., 35, 21. 
S 9 • Coccus characias, Fab., S. R., 311, 29 (1803). 
<T 9 • Dorthesia urticce, Burm., Handb., ii, 76, t. 2, fig. 6 & 11 (1835). 
9 • „ „ Zett., Ins. Lap., 314 (1840). 
S 9 . Orthezia urticce, Amy. et Serv., Hemipt., 624 (1843). 
d 9* >) y> kign., Ess. Cocbinelles, 423 (1875), (syn. partiui), pi. 1, fig. 
13, larva; pi. 21, fig. 1, J imago ; fig. 1,^, h, i, an- 
tennae of embryo and J and 9 larva ; fig. 1, «?, d geni- 
talia. 
A few words on some of this synonymy maybe permitted. Linnd 
says of the Aphides generally : “Species difficile distinguuntur, diffi- 
cilius definiuntur, which is especially well illustrated in his description 
of A. urticce , as follows : — 
Inter maximas hujus generis, tota alba, obtecta quasi setis ; subtus vero lana 
alba, postice valde obtusa ; de genere hsereo, utrum ad Aphides aut Chermes 
aceodat.” 
This is vague enough, but reference is made to the antecedent 
work of Frisch, in which, under the title, “ Von der weissen Blat-Lause 
auf der Matricaria,” is a description from which the following is an 
extract : — 
“ Der Nacken ist mit drey fiber sicb stehenden Bliitlein bedeckt. Mitten auf 
dem Rucken geht eine Linie durcb, welclie neben mit zwey Reihen soleber weissen 
Bliitlein besetzt ist, deren auf jeder Reilie sieben, als Scbuppen fiber eine ander 
liegen. Der Leib ist oval, wonn man ibn ohne die Scbaube betrachtot, und ist an 
den Seiten mit viel weissen und kurzen Bfirstlein besetzt, als mit Franzen.” 
This agrees fairly with our insect: the figure is so small and in- 
distinct, that it is worthless. 
