318 STATES OF INSECTS. (Jmago.) 
of these organs in the sexes, no insects are more distin- 
guished than some species of the capricorn-beetles. In 
Lamia Sutor the male antennz are twice the length of 
the female; and in another N. American species in my 
cabinet, related to L. Amputator, they are nearly thrice 
their length*. Some of the Anthribi approach the Ce- 
rambycide, not only in some other characters, but also 
in this circumstance:—thus the antenne of A. albinus, a 
native of Britain, are vastly longer in the male than in 
the female; and in A. cinereus (Macrocephalus Oliv.)”, 
which I suspect to be of the former sex, they are as long 
nearly as is usual in the tribe just named, called in France 
capricorn-beetles. 
I may here observe, that sometimes in the sexes a dif- 
ference is also to be found in the direction or flexure of 
their antennsze. Thus in Scolia, Pepsis, &c., in the males 
the antenne are nearly straight, but in the females con- 
volute or subspiral. The reverse of this takes place in 
Epipone spinipes, a kind of wasp, and its affinities; and 
Systropha, a kind of bee: for in these the male antenna 
is convolute at the apex‘, and the female straight. In 
* The insects of the group to which this species belongs are re- 
markable for the habit of sawing off the ends of the branches of trees 
when they deposit their eggs. On this account the group, of which 
I possess many species, stands in my cabinet under the name of Apo- 
coptona from the Greek «oxorray. The Rev. Lansdown Guilding 
has given a very interesting account of the history of one of them, 
Ap. amputator, in the Linnean Transactions xiii. 604. See also Pro- 
fessor Peck’s account of the Stenocorus Putator Zoolog. Journ. viii. 
488—. 
> Oliv. no. 80. Macrocephalus, t. i. f. 2. This insect appears to 
belong to Schénherr’s subgenus Ptychoderes, (Curculionid. 34.) but 
differs in some respects. 
© Latr. Gen. Crust. et Ins. iv. 156. 
