AMERICAN COLEOl'TERA. 159 



Strategus antseus, 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 ami 

 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 Cambridge. 



Telephorus rotundicollis. Say. 



A specimen of this insect is deformed in the right antenna as 

 shown in fig. 11. The third joint bears from its anterior surface an 

 extra branch of six joints. The first joint of this antenna is much 

 stouter than the corresponding joint on the left side. The second 

 about half as long as the first and as stout. The outer half of the 

 anterior border is flattened to receive the first joint of the abnormal 

 branch. From its end arises the regular branch of nine joints all of 

 which are normal except the first which gives oflf near the middle of 

 its posterior border a slender spine-like process, half as long as the 

 joint itself, curving outward and backward. The abnormal branch 

 which is composed of six joints is directed forward and outward. 

 The first three joints are flattened and very wide proportionately, the 

 last three cylindrical. The first joint is about as long as the one 

 which bears it and at its base about half as wide as long but con- 

 siderably wider at tip. The next joint is a little narrower than the 

 tip of the first. Its length about equals its width. The third is one- 

 third narrower than the second and almost twice as long as wide. 

 In the figure it is represented as folded upon itself. The fourth joint 

 is somewhat longer than the third and half as wide, almost twice as 

 long as the fifth which bears the sixth a long slender joint which 

 curves inward and is as long as the fourth and fifth together. 



Prionus californious, Motsch. 

 Fig. 12 represents in a specimen o)i Prion us californicus one of the 

 most remarkable monstrosities that has probably ever occurred among 

 Coleoptera — remarkable not only for extent but also for symmetry. 



