PLECGPTERA (Continued) 



Species 



P. marginata 



Period! dae 

 Isogenus alpinus 



I. imhoffl 

 I. fontium 



Perlodes intricata 

 P. .jurassica 



P. microcephola 



Chromosome Number 



2n n Remarks 



22s 



45 s 

 26s 



33s 

 31s 



27s 



Observer 



References 



22s 122(1) XjXo-O?; Junker '23 A.Zf. 17. 

 24o 10,12^(11) 

 220m 



X-jXp-Oo* Matthey & B.B. Pr. Belg. 81. 



13?(D 



13^(11 



12, 14o (11) 



15o(l) 



Aubert '47 



X^-oJ Matthey '46, 



Mat they & 

 Aubert »47 



Experienta 2: 

 B.B. It. Belg. 81. 



l4,17o(ll) 



13^(1) 

 12,15^(11) 



x^-o* 



X 1 X2 X 3~°° 



ISQPTERA 



Species 



Chromosome Number 



2n n Remarks Observer 



Zootermopslg 



angusticollis 



Z . nevadensi3 



52om 



52om 



21^(1) 



References 



Reticulitermes flavlpes 



Termopsis angusticollis 52s 26<?(l,ll) 



Benkert '30* Proc. Penn. Acad. 

 Sci. k. 



Stevens '05 Carnegie Inst. Publ. 

 3$. 



Light '38 



A.R. 72, No. Ur. 

 Suppl. 



♦Benkert, J.M. 1933: Comparison of the chromosomes of the soldier and the king of 

 Reticulitermes flavins Kollar. Proc. Penn. Acad. Sci. 7- (Not accessible) . 



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