THE LONG- III )RXED WOOD-Bi>RIX(! BEETLES. 1013 



^Montgomery County; rare. Aiignst 2tj. Taken from hemlock 

 at Bloomingdale Glens. 



Subfamily II. CERAMBYCINAE. 



I'hc only charactci's available for sej)arating this subfamily are 

 those uivcn in the key, viz., tho7-ax not margined; labrum separate 

 from the front; front tibia; not obliquely sub-ate; palpi never 

 acute at tip ; antenna' always pubeseent. The subfamily is of great 

 extent, embracing many genera ■which are very difficult to separate 

 in easily understood terms. The first distinguishing character 

 used, viz., the "enveloping of the base of the antennae by the eyes," 

 is apt to cause trouble if not properly understood. To make it 

 plain, the antenna- should be extended forward from the head. In 

 this position it ^\ill be seen that in tiiose genera where the "base of 

 the antennae is partially enveloped by the eyes," a line passing 

 from the front or inner border of the upper lobe of the eye to a 

 corresponding spot on the lower lobe will pass through the antennal 

 socket, whereas in the genei-a wliere "not enveloped," this line 

 would run behind the socket. All genera in which the eyes are 

 entire are of course "not enveloped," while those in which the eyes 

 are emarginate may be partially enveloped or not. The subfamily 

 is first separated into foiir Divisions, all of which are represented 

 in Indiana, and these in turn into tribes and genera. 



KEY TO DIVISIOXS OF CEUAMBYCIN^. 



'/. Base of antenn.T; not enveloped by the eyes. 



h. Front cox;e transverse, not prominent; antenniB with second joint 

 rather large, one-third or more the length of third; head inserted 

 in the thorax. Divisi'in I. ( ;all,idioiiiks. p. lOK!. 



hh. Front coxie conical (globose in Pistciiia), prominent; second .ioint 

 of antennae small ; head usually attached to thorax by a neck ; ely- 

 tra usually tapering behind the middle. 



LHvision l\. Leptvrotdes, |i. 104:J. 



aa. Base of antennaj partly enveloped by the eyes; head inserted in the 



thorax. 



( . Second joint of antennaj small, not over one-fourth the length of third 



(except in Mkrtjch/tKs) ; front coxfe not conical, though sometimes 



|ii-, minent. IHvisioii II. (I'EKAMiiVcoiOES. p. noi'o. 



ci: Second joint of antennas about one-third the length of third joint; 



front coxie filobose. widely separated. 



Division III. Atimioides. p. 1041. 



Division I. CALLIUJOIDE!^. 



This division is separated into two tribes, both of which are 

 represented in Indiana. 



