BEMIPTERA HETEROP1 ERA OOR1XID 



As in the Homoptera, ami for tin- >ame ifeueral r, it ha- li 



found imjicrati'. < to ' stablish in tin- Eeteroptera a lar_;-e mimli'Y ..I' new 

 generic uri/iips to treat them mi the same principles that guide the zo 



Characteristics of structure in anta-nnism to tho>e jiri-\al.-;ii to-day in the 

 same groups run throughout lar-v divisions, or even families, ami inn t 

 In- taken into account it' \ve an- to do justice to the facts. llrin^in.^ ti. 

 thus into prominence will serve the useful purpose of stimulating inquiry 

 into their meaning and origin, which the data at present at han> 

 inadequate to explain. That many of these extinct types attained a !, 

 decree of d i Herein ia t ioi i i.-. readily seen by a glance at the tabular view at 

 the end of the volume, where a large number of the genera will be found to 

 have been represented by a half dozen or more species each, some of them 

 at the time very abundant in individuals. 



Family CORIXID^C Douglas and Scott. 



This family, which tirst appears in the Tertiaries, 1 is very poorly repre- 

 sented there. Onlv two Knropean species are known, one each from 

 Oenin-en and Sto-schen The latter species, very small and probably 

 immature, is hardK ivorj ni/.able except as a water-bug of some kind. That 

 from < lenin^en, referred like the other to the existing ami wide--pr. ad ^.-niis 

 ('orixa. is intermediate in character between the tun species of Corixa from 

 Floris>.mt \\ e are aide to add here. But tin; mo>t interesting form which 

 we ^-ive In-low is the strange in>ect iVom Florissant, unfortunately but 

 impertectK- pr.-served. which seems to combine some of the rliara. 

 ( 'orixida- and Notom ctid.-e, and to tunn the type of a new jn-nn>. pmb ibly 

 most nearly allied t< Si^ara. 



I 'l;i >sii i.\ 1;.\ gen. no 1 >, Sigara, nom. gen.). , 



This is a verv curious, robust, new form of < 'nrixidie, which seems more 

 ne.-irl v related to the gerontogeic Sigara than the almost cosmopolitan ( "nrixa. 

 It i-, however, dearl\ di>t in- niched (Vnm either in the jjivat .si/,.- nt'the h 

 [This is ^iven, however, as much tno lar-e in the plate, where the femur M| 



the left tore le^ ix-iili loll In led witllit.j The head ise\ell larger tliail ill the 



1 I 'nil ,-, i h, i ..... rlj preserved In eel iimn ill" \v Im. .i',,.i -i Bavaria, which OppeDbeimb 



. M-ll ill III III lllll\ tn ( ill ! X.I, ! Ill 'i Ht lii-llillKIHil 



