170 THE ENTOMOLOGIST. 



In the last specimen (fig. 4) there is an almost complete 

 fusion of the second and third lines, and the hind wings are very 

 distinctly marked. 



Figs. 3 and 4 are from photographs taken in bright daylight, 

 but not, as figs. 1 and 2, in actual sunlight, and therefore appear 

 less brilhant. All are somewhat enlarged. 



FOSSIL INSECTS FROM COLORADO. 

 By T. D. a. Cockerell. X*^ q,oi 



Cydnid^s; (Hemiptera), 

 Cydnopsis handlirschi, sp. nov. 

 Length, 6 mm. ; breadth of thorax, 3J ; breadth of scutellum at 

 base just over 2 mm., its length fully 2-^ ; width of head about 

 IJ mm. Head and thorax densely and rather coarsely granulate ; 

 head broad, subtruncate in front, with the median lobe narrow ; sides 

 apparently excavated, and angular near the middle, but this is due 



Cydnopsis handlirschi. 



merely to the faintness of the large eyes, which in reality M\ the 

 excavation ; sides of thorax broadly rounded ; scutellum triangular, 

 longer than broad, the lateral margins straight, the apex obtuse ; 

 corium moderately dense, membrane without visible veins ; tibial 

 armature not visible ; antennae not preserved. 



In Scudder's table of American Fossil Cydnidae (' Tertiary 

 Insects of North America,' p. 437) this runs to Cyrtomenns. It 

 shows much resemblance to Cyrtomenns concinnus, Scudd., from 

 the Green River shales of Wyoming, but it differs greatly in the 

 shape of the scutellum (very broad, and oblong rather than tri- 

 angular in C. concinnus), the relatively smaller head, and the 

 more convex profile of the lateral lobes of the thorax. In form 

 and structure C. Jiandlirschi is very close to Pangaus hiUneatus, 

 Say, which lives to-day in Colorado (it occurs at Boulder, and 

 Judge Henderson has obtained it at Fossil Creek), but the Pangmis 

 is a smooth shining insect instead of being dull and roughened. 

 In every respect our fossil appears to accord well with Cydnopsis, 

 Heer, described from the European Miocene. In several of 

 Heer's species of Cydiiojjsis the sides of the scutellum are dis- 



