NO. 1530. 



THE DECTICINyE OF NORTH AMERICA— CA UDELL. 



893 



and rouohened b}' rugosities and convolutions, the median transverse 

 furrow l)road; the anterior margin of the disk is truncate and the 

 posterior margin is semicircularly rounded; median carina distinct 

 only behind the broad transverse furrow, anteriorly replaced by a 

 faint double longitudinal sulcus; lateral lobes longitudinally concave 

 with a few tortuous sulci breaking the otherwise smooth surface. 

 Organs of flight wholly concealed l)eneath the pronotum, the wings, 

 like those of the typical species, coal black. Posterior femora con- 

 siderably less than two times as long as the pronotum and not greatly 

 swollen basally, the greatest width near the base no more than twice 

 that of the narrowest part in the apical half, the swelling confined to 

 the basal half; all the femora are armed beneath on both sides with 

 a few very inconspicuous short, stout spinules, anterior tibia* armed 

 above on the outer side only with three spines. Genital organs as 

 described under the genus. 



Fig. 77.— Plagiostira gillettei. male. 



Color, 3^ellowish, with the disk of the pronotum with fuscous mot- 

 tlings, the center of the broad sulcus showing a green cast and a short 

 longitudinal black stripe in the center of the pronotum next the 

 anterior border, posteriorly terminating at the anterior narrow trans- 

 verse sulcus. The wing pads are piceous and the abdominal segments 

 have each a row of round black spots along the posterior margin. 



Measiireiiients. — Length, pronotum, 11.5 mm.; posterior femora, 

 18.5; width of pronotum across widest part, 7.5. 



Type.—C2it. No. 10188, U. S. National Museum. 



Specimen examined. — One male, Grand Junction, Colorado, June 

 20, 1905. Collected b}" C. P. Gillette, who presented the interesting 

 insect to the National Museum and in whose honor I take pleasure in 

 naming it. 



This is a characteristic-appearing insect. It may be somewhat 

 immature as suggested l)y the smaller wings, the outer pair of which 

 is twisted })eneatli the under ones and their development propably 

 incomplete. 



