594 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



Pig. 165. Cim'bex americatia, second parapterum of mesothorax and attached 

 pronator muscle disk. 



166. Cimbex amcricana, abdomen except first segment, which is fused with 



meta thorax (164), lateral. 



167. Sirex flavipennis, metaplenrum, internal. 



Plate 62. 



Fig. 168. Pepsis sp., propleurum and coxa. 



169. Pepsis sp., thorax except pi'opleurum and procoxa, which are re- 



moved (168). and base of abdomen, lateral. 



170. Pepsis sp., mesotergum, lateral. 



171. Sirex flavipennis, prothorax, lateral. 



172. Sirex flavipennis, propleurum, internal. 



173. Tipulid pupa, head, thorax, and base of abdomen, lateral. 



174. Holorusia grandis, thorax, base of head, and base of abdomen, lateral. 



Plate 63. 



Fig. 175. Holorusia g7-an(lis, mesotergum. 



176. Holorusia grandis, upper end of mesopleurum. 



177. Holorusia grandis, metaplenrum and base of halter. 



178. Holorusia grandis, mesopleurum, internal. 



179. Tabanus atratus, thorax, lateral. 



180. Tabanus atratus, protergnni and mesotergum. 



Plate 64. 



Fig. 181. Libellula auripennis, base of front wing. 



182. Pteronarcys calif orniea, base of front wiug. 



183. Pteronarcys californica, front wing. 



184. Pteronarcys cal if orniea, hind wing. 



I'LATE 65. 



Fig. 185. BlatcUa germanica, base of front wing. 



186. Blatella germanica, base of hind wing. 



187. Dissosteira Carolina, base of front wing. 



188. Gryllus pennsylvanieus, base of hind wing. 



189. Dissosteira Carolina, base of hind wing. 



Plate 66. 



Fig. 190, Benacvs haldemannm. base of front wing. 



191. Bcnacus Jialdcnianum, base of hind wing. 



192. Dytiscus dauricus, base of wing. 



193. Calosoma scrutator, base of wing. 



194. Cyllene rohinice, base of wing. 



Plate 67. 



Fig. 195. Melolontha vulgaris, base of wing. 



196. Melolontha vulgaris, wing. 



197. Calosoma scrutator, basal parts of costa, subcosta, and radius, show- 



ing detached base of costa separated, ventral. 



