50 PROCEEDINGS OF THE NATIONAL MUSEUM, vol. 6D. 



setae on dorsal aspect of head and pronotum white, the other setae 

 transparent or brown. 



Head. — Setae on dorsal asjDect medium length, stout, and con- 

 spicuous; diameter of ocellus 2 slightly greater than the distance 

 between ocelli 1 and 2 ; f ronto-clypeo-labral area slightly wider than 

 long; U-shaped ridge on caudal part of frons bearing three setae; 

 antenna with the proximal and second segments subequal in length, 

 the third two-thirds, and the fourth slightly less than one-half the 

 length of the second, the proximal segment with seven or eight setae 

 and the second with nine or ten ; maxilla with the proximal segment 

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

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

 verse row at its ventro-distal end, proximal segment of labial palpus 

 with three spinelike projections on its 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 extending as 

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

 primary setae medium size, prominent; secondary setae not more 

 than 20 in number, not prominent (fig. 153). 



Abdomen. — Chitinized areas not distinct, secondary setae about 

 as numerous as primary setae and one-third to one-half as long (fig. 

 165) ; ninth abdominal sternum with the caudal margin bearing two 

 groups of 4 setae each; median hooks with 3 and sometimes 4 setae; 

 inner hooks with 2 setae, the spinelike projections slightly less 

 than one-half the length of the hook (fig. 172). 



Mcasu'vefnents. — Length of larvae, 18 to 20 mm., width at the 

 third abdominal segment, 2 to 2.5 mm.; diameter of ocellus 2, 0.36 

 to 0.37 mm., distance between ocelli 1 and 2, 0.35 to 0.36 mm. ; length 

 of f ronto-clypeo-labral area, 2.07 mm.; width, 2.15 mm.; length of 

 pronotum, 2.5 mm., width, 4.1 mm. 



The full-grown larvae used in this description were not reared 

 but were taken from collections of CicindeJa hirticoUis. The first 

 and second stages had been reared by Shelford and comparisons of 

 these with the dug larvae permits of little, if any, doubt that the 

 identification is correct. Shelford states that in the terrigenous 

 margin of Lake Michigan the adults of Cidndela cuprascens are 

 found associated with those of Oicindela hirticoUis. They frequent 

 the moist clean sand with little or no humus. He was never able to 

 find the larvae, due perhaps to the fact that these larvae do not 

 smooth the edges of their holes. The burrows of the reared first 

 and second stages and the ones collected by the author are shallow 

 and similar to those of Oicindela hirticoUis. 



