400 TERTIARY INSECTS OF NORTH AMERICA. 



13. RHYPAROCIIUOMCS Curtis. 



A single fossil was formerly referred to this genus by me, which seems 

 rather to belong to the Acanthiidse. But another from Florissant may more 

 rightly claim a place here, and is the only fossil species known. The genus 

 is now feebly represented in North America, a single species occurring in 

 the United States and another in Guatemala, while a number are recorded 

 from Euro] ic. 



1 \ I II I A K< it H R< >MUX VERRILLH. 

 PI. 23, Figs. 15, :;o. 



Head narrower than the thorax, barely broader than long, rounded 

 subtriangular ; antenna- just about as long as head and thorax together. 

 Thorax subquadrate, narrowing gently, the truncate anterior margin five- 

 sixths the length of the posterior, the whole as long as its anterior breadth, 

 the anterior lobe three times as long as the posterior, the sides full and 

 rounded, very feebly separated from the posterior lobe, the surface faintly 

 punctate. Ilemelytra with the curium reaching the middle of the hinder 

 half of the abdomen, heavily infuscated, but the sutura clavi always marked 

 by a pallid line, and sometimes the corium marked with pallid after the 

 style of Trapezonotus exterminatus of the same beds. 



Length, 3.5"""; breadth, 1.25""". 



Named for the distinguished Yale zoologist, I'r >f. A E. Verrill. 



Florissant. Seven specimens, Nos. 1511, 2027, 2050, ;!l(iO, 5270. 

 !>SS4, 11210. 



14. PACHYMERUS St. Fargean and Serville. 



This group, as restricted by Stal, is composed wholly of Old World 

 forms, and is closely related to Rhyparochromus. To it have been referred 

 a considerable number of fossil Heteroptera, fifteen species in all, 1 but onlv 

 two or three of them at the most can by any possibility be regarded as 

 belonging to the genus in its now restricted form; these would be, besides 

 the one given below, a single species each at Aix and Oeningen and in 

 amber. 



' la my Systematic review of fossil insc-rts I I'mll. H. S. Gcol. Surv.. No. :U, }>. liM). I li;tves;ii<l >r\ 

 enteen, lin vin;; wronply i^irf n rrpilil lo R.Tlolmj iin-l iiinlier lor one moiv spiM-ics rricli 1 II.-ITI thi'V liavc. 



