64 



CLAUDE FULLER. 



generally simple, while some may be forked or even more sub- 

 divided. The subdivided offsets vary from to 5. Counting 

 subdivided offsets as one, iu 31 fore wings the number of 

 offsets vai'ied from 8 to 13, the average being 10 and the 

 common number 12. Similarly, in 28 hind wings, the range 

 and average being the same, the commonest numbers were 

 10 and 1 ) . 



The cross-ribs between media and radius vary widely in 

 number, form, and arrangement. The reticulation between 

 media and cubitus may be represented by a simple ridge, by 

 a feather-stitch, a festoon, or a lace-like pattern. The ridges 

 between the offsets of the cubitus are rarely if ever the same 

 in any two wings. 



Cryptotermes sf. 



These are interesting little wings exhibiting an erratic 

 arrangement in the outer apical quarter, between cubitus and 

 radius. 



The post-costa (fore wing only) has always been found 

 simple and varying only in length. 



'i'lie sub-costa was simple in all wings noticed, and 52 

 were specially examined for the purpose. 



The radius of the fore wing has 6 to 9, and of the hind 

 wing 4 to 7 oblique offsets to the costa ; these are normally 

 simple, only one forked branch being found in 52 wings. 

 The radius of the hind wing may possess as many offsets as 

 that of the fore vviug, but generally it has from 1 to 3 less. 

 The common number for the fore wing was found to be 8 and 

 for the hind 6. 'i'he following table represents the arrange- 

 ment for 8 individual insects : 



Wing. 



Fore 

 Hind 



Fore 

 Hind 



Left. Right. 



