17. Callopna exsul, has smaller cells and more in the same distance than what I suffered might be this form. Mine is tidal alba. 18 Trematofina oclination. Cells long, augi- lar, with at anything between. 19 T. 22 cubrum jones in very oblique lines, 20 T. i infregues jones more ## 21 T. onmbubicala, jones more frequent 22 Chilostyfer variolata. 23 Trematdyena varia ~~ jones this form. 560 Purcell Ave. Bassett Road 500 Phillips Are. 700. Palischara sphaerium is an attracting form. cells nearly smaller than to mine but some of mine are about as small! I use this as identification = Nervem. Whitfield's trinidad like form in blades t Penn.