32 THE ENTOMOLOGIST. 



" ,Jime. — Megastigmus dorsalis, 5 males and 1 female. 

 Pteromalus Nauboliis and ovatus, 179. Eupelmus urozonus, 

 3 males and 5 females. Tetrasticlius Diapbantes, 1-28. 



" Summary of Species and Specimens. — Coleoptera, 9 

 species; 191 specimens, and upwards. Oithoptera, 1 species; 

 5 specimens. Neuroptera, 2 species ; some hundreds of 

 specimens. Hymenoplera (Cynipiles), 4 or 5 species; 

 30,246 specimens. Hymenoptera (Parasitic), 4-5 species; 

 24,417 specimens, and upwards. Diptera, 3 species; 23 

 specimens, and upwards. Lepidoptera,, 5 species; 9 speci- 

 mens, and upwards. Hemiptera, 5 species; 51 specimens, 

 and upwards. Arachnida and Acari, 5 or 6 species ; a few 

 specimens. Total — species, 75 ; specimens, 55,000 and 

 upwards. 



"All tlie Coleoptera, Orthoptera, Neuroptera, Diptera, 

 Lepidoptera, Hemiptera, and Aptera, with the exception of 

 Balaninus Glandium and Drosophila, were probably acci- 

 dental visitors. 



" Teras Qiiercus-terminalis is the cause of the formation 

 of the oak-apples, in each of which a great number of its 

 larvae reside ; sometimes sixty flies or upwards emerge from 

 an oak-apple. It varies exceedingly in size, but usually all 

 the individuals produced from one oak-apple are of one sex, 

 and of the same size. Sometimes the habits of the larva are 

 solitary, and it then lives in two other kinds of galls that are 

 formed on oak-leaves. 



" Synergus socialis is one of the ' Inquilini,' or dwellers in 

 hired houses, as some of the Cynipites have been termed, 



"Pteromalus Naubolus is, perhaps, only a variety of 

 P. semifascia.— i^y«y?m Walker^ (Zool. 1846, p. 1454.) 



" Notes on Oak-a}yples. — The plan of creation requires a 

 continual appearance and disappearance of material exist- 

 ence. Each form of life is from dust; and having performed 

 its part, or completed its circle, returns to dust, which is 

 again gathered up into new creatures ; and these numberless 

 and ever-varying circles constitute the great round of exist- 

 ence, and the whole work is preserved in order by the control 

 which the parts exercise upon each other. The oak-leaf falls 

 and returns to dust, which serves for the growth of the oak, 

 and, in process of time, is developed again into leaves. In 

 other cases the circle of existence is less simple, and two 



