Xll TABLE OF CONTENTS. 



Notices of associated species, 206. The family of Poduridce, 206. 

 European " spring-tails," 207. The garden-flea and its habits, 

 207. 



LiPURA FIMETARIA 2o8 



Synonymy and bibliography, 208. Occurrence in a cistern, 

 208. Occurrence in a well, 209. Serviceable as a scavenger, 209. 

 Appearance and habits, 209. Afiurzda //laritzma noticed, 210. 



APPENDIX. 



(A.) ENTOMOLOGICAL CONTRIBUTIONS 213 



A New Sexual character in the Pup/e of some Lepidoptera, 213 



The interest attaching to the study of the sexual characters of 

 insects, 213. Some of the more conspicuous characters, 213. 

 Minor antigenetical features mentioned, 214. Not numerous in 

 the early stages of insects, 214. Dimorphism in larvae of Thy- 

 rcBus Abbotu', 214. Pupal differences in Pronuba yuccasella, 215. 

 The spinose pupal armature of Cossus, 215. The genus shows a 

 peculiar sexual feature in that the male pupa bears two rows of 

 teeth on segment 10 where the female has but one, 216. The 

 same feature occurs in the ^-Egeriadcs, 216. This armature ser- 

 viceable in distinguishing species, 217. 



On an Egg-parasite of the Currant Saw-fly 217 



Notice of, by Dr. Fitch, 217. Its discovery at Utica, N. Y., in 

 1866, 218. Observations made upon it, 218. Its oviposition as 

 observed at Schoharie, N. Y., 218. Its re-discovery at Albany, in 

 1882, 219. Distribution of parasitized eggs of the currant saw- 

 fly, 219. The parasite proves to be Trzc/wgramina pretwsa, 220. 

 T. minuta referred to and figured, 220. Oviposition of the cur- 

 rant saw-fly described, 220. 



(B.) MISCELLANEOUS PUBLICATIONS OF THE ENTO- 

 MOLOGIST 223 



List of publications in 1882 and 1883 (giving title, place, and 

 time of publication, their extent, and brief summary of contents) 

 as follows : Insects on Sweet Potato vines : The Anatomy of the 

 Mouth Parts and the Sucking Apparatus of some Diptera : Mil- 

 lions of Grasshoppers in Midwinter: A Winter Grasshopper — 

 Tragocephala viridifasciata : The Hickory-Borer — Cyllene pic- 

 tus {Drjtry), 223. Apple-leaf Bucculatrix : Insects that Injure 

 Trees: The White Grub — Lachnosterna fusca {Frohl.) : Mites 

 in Timothy Fields: The Spring Canker-worm — Anisopterj'^x 

 vernata, 224. Leaf-mining Anthomyiida; : The Grain Aphis — 

 Siphonophora avenne {Fahr.) : The Apple-tree Case-bearer : The 



