BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. 5. N:0O 18. 9 
to the first joint of the outer branch; its first joint bearing no 
sete, but very small spines on the inner side, like all the 
other joints of this pair of feet; second joint having at its 
apex three sete, long, fine and ciliated in the female, but 
in the male consisting of a ciliated thorn and two doubly- 
curved spines on its outer side. This prominent character 
reminds one of something like it in the genus Westwoodia 
DANA. 
The outer branch of the third pair of feet does not differ 
from that of the second pair excepting that it has two spines 
only on the outer margin of the third joint. The three 
upper spines of the outer margin in the male provided on 
their sides with small spines, disposed in pairs. Inner branch 
one-jointed, having two sete at its apex and being alike in 
the two sexes. 
The fourth pair of feet (P1. II. Fig. 3.4.) completely resem- 
bles the third excepting that the outer branch has but one seta 
at the inner margin of its third joint. The male has the 
same spines, provided with small ones, as in the third pair. 
The fifth pair of feet rudimentary, consisting of two la- 
mine, passing without articulation into the indistinct basal 
piece. This formation is usually regarded as a two-jointed 
foot, the first joint of which has a process on the outer side. 
This, of course, in purely morphological point of view is 
correct, but in consequence of the development of the feet 
in the larva it seems to me to be indisputable that this foot, 
as well as all the preceding ones, is fundamentally composed of 
a basal piece and two brardches, the outer of which alone 
differs somewhat more distinctly from the basal piece, while 
the inner appears to be only a process. The development 
of the larva shows also, as will be set forth at greater length 
in the following description, that the branches are at first 
only processes. I therefore consider it quite certain that 
what has been termed second joint of the fifth pair of feet 
is homologous with the outer branch of the other pairs of 
feet, whereas the process of the first joint is homologous 
with the inner branch, and I will also, in order to intimate 
this, call them branches. 
The two lamine, (P1. II. Fig. 5.) forming the branches of 
the-fifth pair of feet, in the male much smaller than in the 
female, the inner and smaller branch bearing at its apex 
