PLATK XLYIII. 



Fru. 1. — Cot^cutifiiiKcu,^ (hformatnt^ Mann. Kii3arge<1 5r>0 diameters. Di'scription, p. 250. 



Fig. 2.—C()SC/no(N}^ruii <{rfonnafu.^ Mann. EiiUutccd 550 diiUnclL-rs. Description, p. 2r)0. 



Fui. '^, — Officiiiodisntspuslidtitus Mann. Kii1jhx»'<1 375 diaiiu-tia's. DcsrHjttiiin, p. 257. 



Fi(^. i.~Cosriiio<Ut;rus rohustns Grev. {varii-ty with open ginlU-j. Kiilargi'd 37o diameters. Doscrip 

 tion, p. 258. 





