HEMIPTERA— HETEROPTERA. 



339 



Reduviidaj. Of these six families the Lygasida^ were then the most abun- 

 dant, containing- a httle more than 25 per cent of the whole, followed hard 

 by the Pentatomidaj with a little less than 25 per cent; the Coreidaj come 

 next with 15 per cent, followed at nearly similar distance by the Capsidaj 

 with 9 per cent. The Physapodes have 7 per cent and the Rediiviidse only 

 4^ per cent, mainly because America is so strangely poor in this group, 

 having indeed but a couple of species, the only groups at all common in 

 America being the four with the highest percentages. Here the relative per- 

 centages in the two worlds are very different, as will appear from the follow- 

 ing table, the Lyg?eid;i3 having 33 per cent of the whole American fauna 

 against 19 J per cent in Europe ; the Pentatomidse 24 per cent in America 

 against 25^ per cent in Europe, these two striking contrasts combining to 

 give the Lygseidse the total preponderance, hitherto enjoyed by the Penta- 

 tomidse ; the Ooreidte 2'2 per cent in America against dh per cent in Europe, 

 and the Capsidse 9 per cent in America against 10 per cent in Europe. 



Summary list of known fossil Heteropiera. 



Families. 



Cnrixidje 



Notoneotidic... 



NepidiB 



Belostomatid;e 



Naucoridaj 



Galgiilidio 



Saldida? 



Veliidai 



Hydrobatida) . . 

 LimaobatidsB.. 



Redtiviida> 



Nabida) 



AradidsB 



Tingidida) 



Acantbiidse . . . 



Capsidaj 



Pbysapodes 



Lygaiidse 



Coreidai 



Pentatomida; . . 



North America. 



Genera. Species, 



2 

 1 

 

 

 



1 







2 



2 







2 











3 



1 



7 



3 



26 



14 



16 



Total. 



80 



3 

 1 





 

 



1 





 2 

 3 

 

 2 

 

 •0 

 3 

 1 



13 

 3 

 51 

 34 

 37 



154 



Europe. 



Geuera. 



1 

 1 

 2 

 1 

 2 

 1 

 1 

 1 

 2 

 2 

 7 

 2 

 1 

 4 

 

 13 

 4 

 6 

 12 

 14 



77 



Species 



2 



3 



4 



2 



2 



1 



1 



1 



2 



2 



14 



7 



5 



5 







20 



21 



39 



19 



201 



* What I formerly thought to be Aradidse tarned out to be Myodocbina. 



