56 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



half as many setae on the pronotum and which are not so distinctly 

 flattened. 



The larvae are very restricted in their habitat, occurring only in 

 moist, clean sand which has very little or no humus, as on the beach 

 of Lake Michigan. The burrows are vertical and about 5 inches 

 deep. The eggs are deposited in late June or July and the larvae 

 reach the third instar some time in September, close their burrows 

 in October and hibernate. The burrows are opened in May of the 

 following year and the larvae pupate in June or July. The adults 

 emerge in August, hibernate over the winter and become sexually 

 mature the following spring. 



CICINDELA LIMBATA Say. 



Figs. 77, 114, and 145. 

 Shexfobd, not reared, larvae in the collection of the University of Illinois. 



Color. — Head and pronotum bright coppery bronze, with a green 

 or blue reflection; setae on dorsal aspect of head and pronotum 

 white, the other setae brown. 



Head. — Setae on dorsal aspect medium in length, slightly flattened 

 and prominent; diameter of ocellus 2 distinctly greater than the 

 distance between ocelli 1 and 2; fronto-clypeo-labral area as long 

 as broad; U-shaped ridge on caudal part of frons bearing three 

 setae; antenna with the proximal segment slightly shorter than the 

 second, the third a little more than one-half and the distal one-third 

 the length of the second, the proximal segment with 12 or 13 

 setae and the second with 9 or 10; maxilla with the proximal seg- 

 ment of the galea bearing three setae on its mesal margin, maxillary 

 palpus three-segmented; ligula with four fine setae arranged in a 

 transverse row at the ventro-distal end, proximal-segment of labial 

 palpus with three spine-like projections on the ventro-distal margin 

 and with two setae on each side of these spines, the proximal segment 

 with four setae and the distal segment with one. 



Thorax. — Pronotum with the cephalo-lateral angles not extending 

 as far cephalad as the mesal portion, lateral margins carinate, pri- 

 mary setae not large or distinct, secondary setae short, slightly flat- 

 tened and numerous (fig. 77). 



Ahdomen. — Chitinized areas distinct, secondary setae short, small, 

 and not numerous (fig. 114) ; ninth abdominal sternum with the 

 caudal margin bearing two groups of 3 setae each ; median hooks 

 with 3 setae ; inner hooks with 2 setae, the spinelike projection one- 

 third the length of the hook (fig. 145). 



Measurements. — Length of larvae, 15 to 17 mm. ; width at the third 

 abdominal segment, 1.8 to 2 mm.; diameter of ocellus 2, 0.23 to 0.25 

 mm.; distance between ocelli 1 and 2, 0.20 to 0.21 mm.; length of 



