396 TERTIARY INSECTS OF NORTH AMERICA. 



2. Trapezonotus stygialis. 

 PI. 27, Fig. 11. 



Head roundly triangular, its sides continuing the course of the oblique 

 sides of the thorax, a little broader than long, the front well rounded; 

 antennre slender and equal, hardly so long as the head and thorax together, 

 the first joint not surpassing the head. Thorax transverse, more than half 

 as broad again as long, broadest in the middle of the posterior half, the 

 sides strongly rounded, tapering forward so that the anterior margin is only 

 two-thirds as long as the whole width of the thorax, the front margin 

 slightly and roundly emarginate, the hind border gently convex. Heme- 

 lytra just reaching the end of the abdomen, the corium extending hardly 

 past the middle of the same, this latter rather pale testaceous, with the 

 whole costal region pallid, besides longitudinal pallid streaks toward the 

 .sutura clavi ; membrane clear. Abdomen full and rounded. 



Length of body, 4.3™"; breadth, 1.8"""; length of antennae, Lo""". 



Florissant. One specimen. No. 9302. 



12. LINNtEA gen. nov. (Linn(i). 



A genus of Rhyparoclu-omaria closely allied to Gonatas Distant, but 

 from which it is readily distinguished by the smaller head and shorter 

 antenna?, the first joint of which barely surpasses the head. The head is 

 not more, often less, than lialf as broad as the thorax, nearly as long as 

 broad, and scarcely angulated in front ; the antennae are only as long as 

 the head and thorax together, the second joint the longest, scarcely increas- 

 ing in size apically, the third and fourth successively though but slightly 

 shorter, the third shaped like the second, the fourth not incrassated, all 

 smooth. Thorax very broad, broadest posteriorly, the sides full. Heme- 

 lytra just surpassing the abdomen, the corium occupying about three-fifths 

 of the whole. Legs, and especially the fore femora, stout. 



Probably the use of Linntea in botany has prevented its use in 

 zoology, but the time is long past when such restrictions have any value. 

 There is no conceivable way in which the use of the same term for a living 

 Alpine flower and a Tertiary bug can cause confusion or be inconvenient. 



Several species occur in the North American Tertiaries, but only at 

 Florissant; while but for their much longer antenuiB and slighter fore 



