40 
SCIENCE. 
middle leg. Fig. 4 represents the anomaly as seen 
from below. The coxa and trochanter are like those 
of the right leg. On the inferior surface, between the 
trochanter and femur and embraced in front and be- 
hind by the latter, is inserted a second trochanter ; 
triangular in form, about half as wide and one-third as 
long as the normal one. It gives origin to the extra 
femur, which is two thirds as long and about three- 
fourths as stout as the main thigh. The tibia of this 
extra femur is perfect except that it is one-fourth shorter 
than the other ; its spurs and tarsal joints and the claws 
of the latter being all normal. This abnormal leg is 
less chitinous than the others. 
In Dr. Horn’s Collection. 
SCARITES SUBSTRIATUS, Hald. 
I have tried to represent in fig. 5a monstrosity on 
the right side of the dorsal surface of the prothorax in 
a specimen of the Scarites substriatus. It consists of 
a tubercle about a thirty-second of an inch long, pro- 
jecting outward and slightly forward. It arises a 
thirty-second of an inch transversely from the middle 
of the right margin of the thorax. It is deeply cleft 
on the summit, almost transversely. Fig. 4a, repre- 
sents it when viewed from the side. 
Collected in Texas. In Dr. Horn’s Cabinet. 
dyschirius globulosus, Say. 
The anomalous right anterior leg of a Dyschirius 
globulosus is shown in fig. 6. Fig. 5a, represents the 
normal right leg. The deformity consists in the third 
joint of the tarsus bearing two branches of two joints 
each. The inferior terminal spur of the ti^ia is want- 
ing. The first two joints of the right tarsus are nor- 
mal ; the third a little longer, more clavate, and 
obliquely truncate on each side at tip for the articu- 
lation of the double set of joints which follow. The 
two anomalous branches arise on each side of the 
sharp apex thus formed, one directed to the left, the 
other to the right. The first joint on each branch is 
a shorter and stouter than a normal fourth joint ; 
while the terminal or claw joint does not differ greatly 
in length. The claw joint of the inner or left branch 
bears a pair of normal claws, the outer claw joint is 
somewhat broader and bears two sets of claws curved 
from each other. 
In Dr. LeConte’s Cabinet. 
CHL/ENIUS DIFFINIS, Chaud. 
Fig. 7 represents a deformity in the left middle leg 
of a specimen of Chlcenius diffinis. The tibia at a 
point a little below the middle bifurcates, the inner 
bifurcation continuing to normal length bears the 
tarsal joints. The outer is about two-thirds as long 
as the inner. It appears from its size and form that 
this branch bore a set of tarsal joints similar to those 
seen on the inner; and this opinion is strengthened by 
the fact that the end is somewhat ragged and seems 
to have been broken off. 
In Dr. Horn’s Cabinet. 
LICHNANTHE VULPINA, HentZ. 
A specimen of this insect has an anomalous right 
antenna as shown in fig. 8. The first three joints are 
normal. The fourth, fifth, and sixth are fused into | 
one joint twice as long as the third ; the seventh ap- 
pears to be connate with the first joint of the club. 
From the posterior outer border of the long fourth 
joint near the tip there arises a spherical club of three 
joints about the length of the third antennal joint. 
The first joint comprising the pedicle and base of the 
club, the second the centre, and the last the apex. 
In Dr. Horn’s Cabinet. 
POLYPHYLLA DECEMEINEATA, Say. 
Fig. 9 represents the right antenna of a specimen of 
Polyphylla deccmlineata in which, in addition to the 
normal structure, the second joint bears a branch 
anteriorly, consisting of a single free joint which sup- 
ports two clubs, placed transversely to the normal, of 
seven lamellae each, united at their bases. The plane 
of the normal club is perpendicular to the plane of 
the abnormal, but in the figure the two are represented 
as in the same plane ; the normal branch as seen from 
the outer side, the abnormal as seen from above. 
Fig. 9b, represents the left antenna. The basal joint 
of the right antenna is somewhat smaller and more 
inflated than that of the left. The second joint is 
twice as long as the corresponding one on the left 
antenna ; the outer half of the anterior border being 
flattened for the insertion of the first joint of the abnor- 
mal branch, and its posterior border somewhat sinuate 
near the tip. The double club on the abnormal 
branch consists of two sets, of seven lamellae each of 
unequal size, united at their bases at an angle of forty- 
five degrees, the outer scarcely longer than half the 
inner and more curved, while the inner is but little 
shorter than the club of the normal branch but more 
curved than it. The joint supporting these branches 
is obconical and much shorter than the second joint 
from which it arises. Fig. 9a, represents the double 
club as seen from below. The third joint of the nor- 
mal or posterior branch is in form like that of the left 
antenna, but a fifth shorter. It bears a club of seven 
lamellae, which is directed downward, and is about 
half as long as that of the left side, much narrower 
and feebly curved. 
The insect is in Dr. LeConte’s Cabinet. 
STRATEGUS ANT7EUS, Fabr. 
A specimen of this insect has the left middle leg 
triplicated. I have tried to represent this monstrosity 
in fig. 10. It may be regarded as made up of a 
normal leg with its trochanter entire. To the under 
surface of this normal femur are added two others, 
making together a pyramidal mass ; free at their 
apices for about one-third their length. Those of 
the normal femur and the one nearest to it are closely 
placed, while the other diverges at an angle of about 
forty-five degrees. Each femur is provided with a 
tibia and tarsus. The tibia of the normal femur is 
not as greatly developed as the corresponding one on 
the right leg and those on the two abnormal femora 
are still less strongly marked. 
In the Museum of Comparative Zoology at Cam- 
bridge. 
Telephorus rotundicollis, Say. 
A specimen of this insect is deformed in the right 
antenna as shown in fig. 11. The third joint bears 
