15^ 



y/z<? ScoHlsh Naturalist. 



157. Euplexf a lucipara ; c 



158. Aplecta herbida ;/ 

 156, „ nebulosa ; c 



160, „ tincta ; vr 



161. Hadena adusta ; c 

 162. 

 163. 

 164. 

 165. 

 166. 

 167. 



j> 



j> 



protea ; c 

 glauca ; c 



jj 



jj 



>j 



jj 



172. CucLillia umbratica ; c 



173. Anarta myrtilli ; r 



174. Abrostola urticae ; c 



175. Plusia chrysitis ; c 



176. 

 177. 

 178. 

 179. 

 180. 

 181. 



dentina ; c 

 oleracea ; c 

 thalassina ; c 

 rectilinea ; c 



168. Chloantha solidaginis ; y 



169. Calocampa vetusta ;/ 



170. ,, exoleta ; c 



171. Cucullia chamomillce ; / 



[To be continued.) 



J) 



55 



bractea ; / 

 festucEe ; r 

 iota ; c 

 v-aureum ; c 

 gamma \ c 



mterrogationis 



182. Gonoptera libatrix ; r 



183. Mania maura , c 



184. Stilbia anomala;/ 

 185.. Euclidia mi ; r 



DOES ALTERNATION OF GENERATIONS OR DIMORPHISM 

 OCCUR IN EUROPEAN CYNIPIDAE ? 



By p. CAMERON. 



IN the present paper I purpose discussing the question raised 

 by Dr. Adler as to the occurence of alternation of genera- 

 tions in certain European Cynipidse, and at the same time 

 making some remarks on parthenogenesis in the Cynipidte and 

 Tenthredinidae. 



We owe to the labours of Hartig the first proper generic 

 arrangement of the Cynipidae. This author not only distributed 

 the gall-making species into several well defined genera, but, 

 what was equally important, he clearly separated those which 

 were true gall-makers from those forms which lived as inquilines 

 in galls raised by other species, and from others which were 

 pure and simple animal parasites like the ichneumons. By this 

 work he removed many difficulties from the path of the student, 

 and rendered the further study of the group clear and intelli- 

 gible. 



Hartig divided the gall-making Cynipidce into eleven 

 genera — Cynips, Bior/iiza, Andricus, Teras, Synophrus 

 Trigonaspis, Spat hog asttr, Neurotenis, Diastop/irus, Rhodltcs and 



