712 PROCEEDING!^ OF THE NATIONAL MUSEUM. vol. xxvi. 



universal anastomoses of the smallest tracheoles. Any one of these 



Fig. 5.— Trachkatkin of the nddal keuion ov the nymphal wing ok Anax Junius Drury. 



Fig (>. — Traciieation of tiir nodal region of the nymphal wing f>F Lihcllnla piiU-hHla Drury. 



Open :i it-passages niioht t)ecomc enlarged, should necessity arise for 



