264 



Liburnia, genus 246 



arvensis Fitch, note on 248 



" campestris Van D., described 254 



" consimilis Van D., described 249 



detecta Van D., described 248 



fovea ta Van D., described 257 



furcata Prov., note on 248 



Gilletti Van D., described 258 



" incerta Van D., described 258 



" Kilmani Van D., described 253 



laminalis Van D., described 251 



lateralis Van D., described 253 



lineatipes Van D., described 255 



lutulenta Van D., described 252 



obscurella Boh., note on 252 



" occlusa Van D., described 256 



ornata Stal, note on 247 



Osborni Van D., described 250 



pellucida Fabr., note on 247 



pnella Van D., described 250 



Weedi Van D., described ,, 252 



Lumbncus terrestris the Host of the Gape Worm of Fowls, 47 



Mcgamelus, genus 233 



Davisi Van D., described 235 



" marginatus Van D., described 234 



" notulus Germ., note on 233 



" piceus Van D., described 234 



Meyenia crateriformis Potts, note on 103 



" Everetti Mills, note on 103 



" fluviatilis Potts, note on 102 



•Leidyi Carter, note on 103 



Millsii Potts, note on 103 



MuUeri Lieb,, note on 103 



plumosa var Palmeri Potts, note on 103 



Mills, Henry: Collection of Fresh- Water Sponges, Notes on. By 



D. S. Kellkott 99 



Niagara Shales, New Genera and Species of Fossils from. By 



Eugene N. S. Ringueberg 5 



Nidification of Birds on the St. Clair Flats. By Rev. y. //. Langille 33 



Nonagria subcarnea Kellicott, described 40 



obliquata, note on 40 



Onandaga Salt Group, Thickness of at Buffalo, N. Y 97 



Palaeoniscus antiquus Williams, described 84 



reticulatus Williams, described 83 



Pendulum and its Laws of Oscillation. By A. M. Edwards 217 



Pentagramma new gen us, characterized 260 



vitatifrons Uhler, note on 260 



