AKT. 17. LARVAE OF HOLARCTIG TIGER-BEETLES HAMILTON". 21 



hooks with two setae, inner hooks with six or seven setae, the spine- 

 like projection about one-fifth the length of the hook (fig. 147). 



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

 abdominal segment, 1.4 to 1.6 mm. ; diameter of ocellus 2, 0.32 to 

 0.34 mm.; distance between ocelli 1 and two, 0.19 to 0.21 mm.; 

 length of fronto-clypeo-labral area, 1.25 to 1.35 mm., width, 1.25 to 

 1.35 mm. ; length of pronotum, 1.5 to 1.7 mm., width, 2 to 2.3 mm. 



This species is easily distinguished from all others by the two- 

 segmented labial palpus, which has apparently occured through 

 the fusion of the proximal and second segments. The larvae were 

 collected at Galveston, Tex., on Denver Beach, from moist, clean 

 sand, outside of the shrubs, which is probably covered by highest 

 tides. It occurs in situations similar to those of C. hirticollis along 

 the New England coast and around the shores of Lake Michigan. 

 The burrows are from 12 to 18 inches in depth. 



CICINDELA BIRAMOSA Fabricus. 

 Figs. 149, 161, and 173. 



Horn, W., reai'ed, larva in the collection of the University of Illinois. 

 1899, Horn, W., Deutsche Ent. Zeitschr., p. 385. 



Color. — Head and pronotum bright coppery to yellow with a blue 

 to green reflection, lateral margins slightly yellow; setae on dorsal 

 aspect of head and pronotum transparent or glassy, the other setae 

 brown. 



Head. — Setae on dorsal aspect fine and inconspicuous; 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 the 

 caudal part of frons bearing two setae; antenna with the proximal 

 and second segments sub-equal, the third slightly more than two- 

 thirds and the fourth slightly less than one-half the length of the 

 second, the proximal and second segments each with six or seven • 

 setae; maxilla with the proximal segment of the galea bearing three 

 setae on its mesal margin, maxillary palpus two-segmented, the 

 proximal and second segments fused and together longer than the 

 distal segment; 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 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-mesal portion extending 

 distinctly cephalad of the cephalo-lateral angles, lateral margins 

 not carinate, primary setae long but not conspicuous, secondary setae 

 medium size, inconspicuous and not numerous (fig. 149). 



