FIELD BOOK OF INSECTS. 



burrows [usually] in sandy soil, watching at the mouth 

 for such unwary creatures as may come their way ' ' (Smith) . 

 The larvae have a hump on the fifth abdominal segment; 

 this hump is provided with forward-pointing hooks that 

 help the larvae to hold back if their prey should try to 

 get away. See Plate LXXII. The burrow, which is 

 often a foot or more deep and within which the larva 

 pupates, may be recognized by the smooth, circular depres- 

 sion, worn by the larva's feet, surrounding the opening. 



Tetracha of the South and Omus of the 

 West live more like Carabidae but Cicindela 

 is the largest genus of the family and the one whose habits 

 have just been described. The following are some of the 

 common species in the Northeast. C. dorsalis (Plate 

 LXXII) is white with variable black markings; along 

 the sea-shore in July. Plate LXXIII shows generosa, 

 which lives on sandy plains, and sexguttaia (the number of 

 white dots is variable) of sunny, woodland paths. C. 

 repanda, of pond and river banks, is bronzy-brown above 

 with three white marks on each elytron: one (the "humeral 

 lunule") at the shoulder, one (the "apical lunule") at the 

 apex, and one, which is somewhat like an eighth-note 

 in music, in the middle. C. hirticollis is like it but hairier 

 and the humeral lunule is upturned at the tip. C. tran- 

 quebarica is larger (about .6 in. long), the tip of the humeral 

 lunule is down-turned; frequents sandy roads. The 

 last three are most commonly found in spring and fall. 

 C. punctulata, which is dark above (greenish-blue beneath) 

 except for white dots, is abundant on roads, garden paths, 

 and even city streets, flying freely to light in midsummer; 

 each elytron has a row of green punctures along the suture 

 in addition to densely placed, uncolored ones. C. modesta 

 is black and C. rugifrons is green, each with three large 

 white spots; found in pine barrens. 



CARABIDAE 



Most of the many Ground-beetles are plain black or 

 brown. The antennae of the adults start from the side of 

 the head between the base of the mandibles and the eyes, 

 which are usually of moderate size; ornamental hairs are 



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