12 [Juno, 



tennse with the 2ad joint a little longer than the 3rcl, 4tli compressed, obsoletely 



sulcated, a little shorter than apical joint, which is the longest. Pronotum with an 



obscure transverse impression, about one-third from ajDCX. Membrane fuscous. 



Under-side of body thickly and finely punctured, excepting on disc of abdomen, 



which is impunctate, and shining fuscous. Rostrum luteous, pitchy towards the 



apes. Cosse luteous, anterior femora prominently spinous beneath. 



Long., 11 mm. 



Isubu. 



Apart from colour, the nearest allied African form to the above 

 would appear to be A. pullus, Stal. 



Derwent Grove, East Dulwicli : 

 May, 1878. 



DIMORPHISM AND ALTERNATION OF GENERATIONS IN THE 



CYNIFID^. 



Simultaneously with the announcement from Mr. Fletcher pub- 

 lished in otu' May No. (Vol. xiv, p. 265) that he had confirmed Dr. 

 Adler's statement (see Vol. xiv, p. 44), so far as two of the supposed 

 species are concerned, there appeared in the Pet. Xouvelles Entomolo- 

 giques for May 1st, 1878, an article by our correspondent M. Lich- 

 tenstein under the title " Les Cynipides mono'iques," in which he 

 stated that he had obtained galls of Spathogaster haccarum from eggs 

 laid by Neuroterus Jenticularis. 



Mr. Fletcher has since informed us that he also obtained two 

 galls of S. haccarum, the produce of N. lenticulnris, but the little oak 

 upon which they were has died. He has now bred S. vesicatrije from 

 the galls before alluded to. 



We doubt not that all Dr. Adler's statements will be fully con- 

 firmed, instead of being " blown to the winds," as it was recently 

 asserted they already had been. — Eds. 



ON PARTHENOGENESIS IN THE r^iy'riZ'i?^Z>/.Y/i).2:,& ALTERNATION 

 OE GENERATIONS IN THE CYNIPIDJ]:. 



BY P. CAMEROX. 



In a paper which I published in the " Scottish N^aturalist " for 

 October last, I pointed out that the ^ of Pcecilosoma pulveratum, Retz. 

 (ohesa, H.),was quite unknown, and suggested that here we had a case 

 of parthenogenesis. I am glad to be able to confirm this view by direct 

 observation. 



At the beginning of the present month (May), I found, in a small 

 bottle containing two or three corks into which the larvae of P. 2)ul- 

 veratum had bored to pass the pupal state, two females of that species. 



