ART. 17 LARVAE OF HOLARCTIO TIGER-BEETLES HAMILTON. 51 



CICINDELA PULCHRA Say. 

 Figs. 76, 113, and 144. 

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



Color: — Head and pronotum dark purple with a dark green re- 

 flection; setae on dorsal aspect of head and pronotum white, the 

 other setae brown. 



Head. — Setae on dorsal aspect long, stout and prominent; di- 

 ameter of ocellus 2 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 3 setae; antenna with the proximal 

 segment slightly shorter than the second, the third one-half and the 

 distal slightly more than one-third the length of the second, the 

 proximal segment with 5 or 6 setae and the second with 9 

 or 10; maxilla with the proximal segment of the galea bearing 

 3 setae on its mesal margin, maxillary palpus three-segmented; 

 ligula with 4 fine setae arranged in a transverse row at the ventro- 

 distal end, proximal segment of labial palpus with 3 spine- 

 like j)rojections on the Aentro-distal margin and with 2 setae on 

 each side of these spines, the proximal segment with 4 setae and 

 the distal segment with 1. 



Thorax. — Pronotum with the cephalo-lateral angles extending as 

 far cephalad as the mesal portion, lateral margins slightly carinate, 

 primary setae not large or prominent, secondary setae small and 

 not over fifteen in number (fig. 76.) 



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

 and not numerous (fig. 113) ; ninth abdominal sternum with the 

 caudal margin bearing 2 groups of 4 setae each ; median hooks with 

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

 the length of the hook (fig. 144). 



Measurements. — Length of larvae, 21 to 23 mm., width at the third 

 abdominal segment, 3 to 3.4 mm. ; diameter of ocellus 2, 0.33 to 0.37 

 mm.; distance between ocelli 1 and 2, 0.30 to 0.32 mm.; length of 

 fronto-clypeo-labral area, 1.9 to 2.1 mm., width, 1.9 to 2.1 mm.; 

 length of pronotum, 2.3 to 2.5 mm., width, 3.7 to 4 mm. 



The larvae were collected at Alberquerque, New Mexico, near the 

 upper end of an arroya in moist, adobe soil. The holes were vertical 

 and from 4 to 8 inches deep. 



CICINDELA OBSOLETA Say. 



Figs. 158, 169, and 179. 



Hamilton, not reared, larvae deposited in the U. S. National Museum and 

 the author's collection. 



Color. — Head and pronotum a dark purple with a bluish green 

 reflection; setae on dorsal aspect of head and pronotum white, the 

 other setae brown. 



