1879.] NATURAL SCIENCES OF PHILADELPHIA. 163 



20. Centropyxis aculeata. Occasional. 



21. G. ecornis. Frequent. 



22. Hyalosphenia papilio. Not so abundant as usual. 



23. H. elegans. Not so abundant as usual. 



24. Euglypha ciliata. Frequent. Small ones and some of the 



larger ones hairless. 



25. E. cristata. Frequent. 



26. E. brachiata. Occasional. 



27. E. mucronata. Occasional. Several without the mucro. 



28. Assulina seminulum. Syn. Euglypha brunnea ; E.tincta. 



Frequent. 



29. Sphenoderia lenta. Sj T n. Euglypha globosa. Frequent. 



30. S. macrolepis, n. s. First observed. Small, compressed 



pyriform, with broad neck. Body on the broader sur- 

 faces with a single pair of wide hexagonal plates. Length 

 0.036 mm.; breadth 0.024 mm. Frequent. 



31. Cyphoderia ampulla. Syn. G. margaritacea. Rare. 



32. Trinema enchelys. Numerous and of much variety. Several 



of a brown color, as in Arcella. 



33. Placocista spinosa. Syn. Euglypha spinosa. Rare. 



34. Pseudodifflugia gracilis. Syn. Pleurophrys sphaerica. Oval 



form. Occasional. 



35. Clathrvlina elegans. Detached and dead, or in an encysted 



condition. Few. 



36. Hyalolampe fenestrata. Few 



37. Acanthocystis ? Colorless, and with simple, deli- 



cate un forked spines. Few. 



38. Amphizonella violacea? A single individual. 



39. Amoeba radiosa. Rare. 



40. Amoeba ? Young of A. proteus. Rare. 



With the foregoing there were associated many desmids, dia- 

 toms, rotifers, anguillulas, etc. 



June 24. 

 The President, Dr. Ruschenberger, in the chair. 

 Seventeen members present. 



Note on Lonas inodora. Mr. Thomas Meehan exhibited speci- 

 mens of this Mediterranean plant, an escape from a garden, found 

 growing wild in a swamp in association with Iris versicolor, Ono- 

 clea sensibilis, and other moisture-loving plants. The}' had made 

 a growth of near two feet long, and the heads of flowers in all 

 cases had ray florets, with the ligulate portions an inch in length. 

 In garden culture the heads were nearty discoid, the ray petals 

 being almost obsolete, and in De Candolle's description the dis- 

 coid heads are inven as a generic character. 



