COLEOPTERA. 567 



species. These live under the bark of pine-trees. They 

 are closely allied to the Cerambycidae, but differ in the form 

 of the tarsi and in the structure of the antennae. The 

 fourth segment of the tarsus, although much reduced in 

 size, is distinctly visible ; the first three segments are but 

 slightly dilated, and the third is either bilobed or not (Fig. 

 686). The segments of the antennae have deep impressions, 

 in which are situated the organs of special sense (Fig. 687). 

 The most common species is Par and r a brunnea (Pa-ran'dra 

 brun'ne-a) (Fig. 688) ; this insect is of a mahogany-brown 

 color. 



Family CERAMBYCID.E (Cer-am-byc'i-dae). 

 The Long-homed Beetles or Cerambycids (Ce-raw'bj'-ezds). 

 This is a very large family, there being about six hun- 

 dred described species in North America alone. As a rule 

 the beetles are of medium or large size, and graceful in 

 form ; many species are beautiful in color. The 

 body is oblong, often cylindrical. The antennae are 

 long, often longer than the whole body; but except 

 in one genus, Prionus, they are only eleven-jointed, 

 as with most beetles. The legs are also long, and 

 the tarsi are apparently four-jointed, the fourth j\ s 

 segment being very small and hidden ; the third 

 segment of the tarsi is strongly bilobed (Fig. 689). FlG - 68 9- 

 They are strong fliers and swift runners; but many of 

 them have the habit of remaining motionless on the limbs 

 of trees for long intervals, and when in this apparent trance 

 they suffer themselves to be picked up. But, when 

 once caught, many species make an indignant squeak- 

 ing by rubbing the prothorax and mesothorax to- 

 gether. 



The larvae are borers, living within the solid 

 parts of trees or shrubs, or beneath bark. They are 

 white or yellowish grubs. The body is soft, and 

 tapers slightly from head to tail (Fig. 690) ; the 

 jaws are powerful, enabling these insects to bore into the 



