HEMIPTERA HETEROPTEBA. 



Reduviidae. Of these six families the LygM-ida- \\en- then the most abun- 

 dant, containing a little mure than L'f> per cent ot tin- whole, followed hard 

 by the Pentatomidse with a little less than 2"> per cent: the Coreidac come 

 next with 15 per cent, followed at nearly similar distance 1>\- the Capsid.-e 

 with M ]ier cent 'Die l'h vsapodes have 7 percent and the Keduviida- milv 

 Ijl 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 t wo worlds are very different, as will appear from the follow- 

 ing table, the Lyn-a-idaj having 33 per cent of the whole American fauna 

 against 19i per cent in Europe ; the Pentatomidae 24 per cent in America 

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

 give the Lyg.-nila- the total preponderance, hitherto enjoyed by the Penta- 

 tomidae : the ( 'oreida *2'2 per cent in America against 9i per cent in Europe, 

 and the Capsida- ! per cent in America against 10 per cent in Europe. 



Summary list of known fosiiJ Ueteroptera. 



U li.it I liirniiTly Iliiillillil 



