HEMIPTERA HETEROPTERA COREIM5. 433 



COKI/rs Fall,',,. 



Two fossil species have already been referred to this genus, both t'rom 

 Aix. One, however, as shown by Ileer, belongs rather with Pachymerus, 

 ami the other is merely indicated as being half the size of Therapha 

 hyoscyami of P^urope. In America the genus is best developed within 

 the tropics, but has abundant representatives in the United States. Three 

 of the Florissant Ileteroptera appear to fall within its limits, ami a (ireen 

 River species, which I formerly took for a Reduvius, appears also to belong 

 here. 



Table of the specie* of Cori.-w.. 



wiiliont an interrupted series of lateral spots. 



Smaller forms, not cxeeeclnii,' live millimeli-rs in length 1 



Larger forms, excccilin^ six millimeters iu length. 



I'M uly relatively stout, about three times as lon^ as I. mail 2. C. < 



Body relativoly slender, nearly four timrs as Imifi as hroail H. C. xuiiiinirniii. 



An interrupted scries of lateral spots 4. f. giittatu*. 



1. CORIZUS CELATUS. 

 PI. L'7, Fi.i^. \:>. 



Head a little broader than lon-, with the eves a little broader than tin- 

 apex of the thorax, subtriangular, the front angularly produced between ihe 

 antenn;r, the liasal joint of which seems barely to surpass the ape\ i.f the 

 front; the remaining joints slender. Thorax half as broad again as long, 

 tapering forward with slightlv ampliated sides, the front margin gently and 

 broadlv emarginate, scarceh more than lialt'as long as the base, the surface 

 densely and sharplv punctate, and a faint sign of a median siilcation. 

 Corium of hcmelvtra reaching a little beyond the middle of the abdomen, 

 clear excepting alon^ the finely punctate principal veins and near the outer 

 apex, which is wholly clouded. Abdomen dark, with broad premarginal 

 pale lateral bands. 



Length, 5""" ; breadth of thorax, l.'.l'"" 1 . 



Florissant. Three specimens, Nus. l:i;,J, t;;5H!i, II _'<>."). 







_'. ( 'oui/.rs Ar.nn ,\ ; s. 

 PI. L'.".. l''i.-. 5; I'l. L-C, Km. I. 



Body relatively Stout, about three tinn-< as long a- lu-oad, the head 

 rounded, l,ardl\ snl)triangular, considerably liroader than the ape\ of tlio 

 thorax, the front roundlv produced between the antenna', the basal joint of 



VOL XIII L'S 



