398 TERTIARY INSECTS OF NORTH AMERICA. 



pared. Unfortunately the head is not well preserved and the thorax is 

 defective, but the latter can be seen to be nearly as broad in front as 

 behind, with decided though rounded angles in front and with a faintly 

 punctate surface. It is of a very dark color ; the corium, which is scarcely 

 less dark than the body, shows only a slender pallid line at the sutura clavi 

 and along the principal vein, which passes down the middle and forks in 

 the middle of the outer half of the corium, much fainter after forking. The 

 membrane is marked as in L. holmesii, but the stripe on the inner margin 

 is very faint. 



Length of body, 3.35""" ; breadth, 1.25""'. 



Named for my fellow student in science, Prof F. W. Putnam, of 

 Cambridge. 



Florissant. One specimen, No. 5.S73. 



3. LlNN^A ABOLITA. 



Head exceptionally small and rounded, not more than a third as broad 

 as the thorax, the front in no way angulate. Thorax with the posterior 

 lobe distinctly separated from the anterior and rather less than half as long 

 as it ; anterior lobe very rapidly narrowing with oblique but slightly arcu- 

 ate sides, so that the front margin is scarcely more than a third as wide as 

 the thorax, and the front half of the thorax has one nearly uniform curve ; 

 the posterior lobe again narrows or is slightly constricted ; surface smooth. 

 Hemelytra with the corium uniformly dark fuliginous, membrane clear. 

 Abdomen very full and rounded. 



Length, 3.75""' ; breadth, 1.4""". 



Florissant. One specimen, No. 1918. 



4. LlNN^A CARCERATA. 



PI. 23, Fig. 2. 



Head small, less than half as broad as the thorax, almost as long as 

 broad, tlie front well rounded; antenn;v shorter than the head and thorax. 

 Thorax very i)road, twice as broad as long, the sides very strongly rounded 

 and full, the anterior hardly shorter than the posterior margin, with no dis- 

 tinct separation into anterior and posterior lobes, the surface smooth, with a 

 slight median sulcation. Hemelytra pale testaceous, with large and irreg- 

 ular pallid blotches covering nearly'ha.lf the corium but not invading the 



