Index — Volume XVIII. 



iii 



Enallagma geminata Kellicott, 

 106, 113. 



hageni Walsh, 105, 1 13. 



pollutum Hageii, 113. 



signatum Hagen, 113. 

 Kncrinurus punctatus, 170; sp. 187. 

 Endoceros, host of Bryozoa, 78. 

 Enteridium rozeauum (Rost) 



Wing, 57. 

 Epiaeschna heros Fabr., 114. 

 Epicordulia princeps Hagen, 114. 

 Erythromma conditum Hagen, 

 ^ 105, 113. 



Exoascns pruni on Prunns anieri- 



cana, 50. 

 Kavosites favosideus, 172, 186. 



favosus, 184, 186, 192, 



.195, 196. 

 niagarensis, 167, 170, 171, 



173. 193. !94- 

 venustus, 172, 196. 



Fistnlipora McCoy, 119. 



flabellata Ulrich, 122. 

 granulifera (Ulrich), 

 120. 



milfordensis James, 

 122. 



ninltipora James, 121, 

 122; fig. 12 i. 



nicholsoni (James), 

 121; fig. 1 2 a-c. 



oweni James, 1 19. 



rnstica (Ulrich), 120. 



siluriana James, 121, 

 122, ; fig. 12 d-h. 



venusta, 121. 



Foerste, Aug. P. The middle Si- 

 lurian rocks of Ohio and Indiana, 

 161. 



Fonscolombia vinosa Say, 111, 114. 

 French, Dr. T. H., Jr., curator of 



physics, 3. 

 Fuligo ellipsospora Ljster, 56. 



Fungi, New North American, by 



A. P. Morgan, 36. 

 Fusisporium culmorum W. Sm., 



5i, 55- 



Gasteropoda of the Cincinnati re- 

 gion, by Harper, 89. 



Geaster minimus Schw., 55. 



velutinus, n.sp.,38; PI. I, 

 fig- 7- 



Gomphaeschna furcillata antilope 



Hagen, 108, 1 14. 

 Gomphiuae, 106. 



Gomphus dilatatus Rambur., 106, 

 in, 113. 



Gomphus exilis Selys, 1 1 1, 113. 



externus Selys, 107, 1 1 1 , 

 ii3- 



fraternus Say, 111, 113. 

 fraternus walshii Kel- 

 licott, 107, 108, in, 



furcifer Hagen, 108, 1 1 1 , 

 ri 3- 



graslinellus Walsh, 1 1 1 , 

 H3- 



spicatus Selys, 11 1, 113. 

 spiniceps Walsh, 11 1, 

 114. 



vastus Walsh, in, 113. 

 villosipes Selys, 10S, 



Jl . 1 - J r 3- 



Goniobasis; Cincinnati species of 

 the genus, 97. 



Grimsley, Dr. G. P. : " Mineral Syn- 

 thesis," 58. 



Guignardia bidwellii (Ellis) Viala 

 & Rav., 55. 



Gymnosporangium clavipes C. 

 P., 55- 



Gyraulus parvus Say, 95. 

 Hagenius brevistylus Selys, 107, 



I in, Ho- 



Halysites catenulatus, 186, 170, 

 171, 172, 180, 181, 184, 168, 165, 

 •67, 189, 193, 194, 196. 



Harper, Prof. Geo. W., vice-presi- 

 dent, 2 ; curator of geology, 3. 



Harper, Geo. W., Catalogue of 

 Land and Fresh W 7 ater Shells 

 found in the vicinity of Cincin- 

 nati, 89. 



Harrison, C. L., resigned, 2. 

 j Hayes, Seth, member, 1 ; libra- 

 rian, 3. 



Hebertella daytonensis, 167. 

 Helicodiscus lineatus Say, 93. 

 Heliolites, 177. 



niegastoma, 167, 192, 

 197. 



subtubulatus, 180, 181, 

 184, 192, 193, 195, 196, 

 198. 



Helisoma; Cincinnati species of 



the genus, 95. 

 Helvella elastica Bull., the host of 



a fungus, 45. 

 Hemitrypa ulrichi, 170, 171, 172, 



180, 186, 196. 

 Hemiarcyria montana, 11. sp., 40; 



PI. II, fig. 12. 

 Hetierina americana Fabr., 113. 

 I Heterotrypa Ulrich, t 1 5. 



