46 GUIDE TO INSECTS. 



illustrated by a series of coloured drawings. Specimens of the fly 

 with leaves injured by the larvse are also shown. The eggs are laid 

 in rows on the ribs on the under side of the leaves. Examples of 

 another species, Nematus propinquus, the larvae of which sometimes 

 strip the leaves from Black Poplar, are also exhibited. 



In the same case will be seen a female example of the Pine 

 Borer, Sir ex gig as, in the act of depositing eggs in wood. The larva 

 burrows into the solid wood, and often does much damage in fir 

 plantations. 



By the side of this is placed a large Ichneumon, Rhyssa 

 persuasoria, which is a parasite on the larva of Sirex. In order to 

 deposit its eggs on or near the larva of the Sirex, it is provided with 

 a very long ovipositor, but how the insect passes this delicate 

 instrument through solid wood is unknown. A small piece of wood 

 with the ovipositor of a specimen in it is exhibited. Unfortunately 

 the insect was broken when found. 



Some examples of the white cocoons made by Braconidce (often 

 mistaken for spiders' nests) are shown in Table-Case 54 ; and also 

 a series of galls made by Gall-flies, Gynipidce. An interesting series 

 of the galls will also be found among the models on a shelf on the 

 west side of the gallery. 



A small series of specimens will be found in drawers 1-8 of a 

 cabinet on the west side of the gallery. 



In Table-cases 51 and 52, nests of various wasps are exhibited and 



in the wall-cases adjoining all the larger nests of ants, wasps, and bees. 



Wall- Among the ant-nests should be noticed one made by binding 



case 11. together leaves with silk threads (317, 319). This is the work of a 



moderately large pale green ant, CEcophylla smaragdina, a common 



species in India, with varieties in Africa and Australia (fig. 47). 



Several brown nests in trees are exhibited. These are built by 

 species of Crematogaster, and from their form have been called 

 "Negro Heads" (301-311). 



A small nest of the Provident Ant (321), Atta barbara, now 

 known as Aphenogmter barbara, which stores its nest with seeds, is 

 shown in the same case. Another curious nest is that of Folyrhachis 

 Mspmosm (327) from Brazil. This is made of soft substance and 

 has the appearance of a sponge. 



Formica fuliginosa, a common English black ant forms its nest 

 in hollow trees. A portion of one of their nests is exhibited (333). 

 Another complete nest (335), found near Guildford, was built in a 

 house under the drawing-room floor. 



