416 Ohscrvations on various Insects affecting Pea-crops^ Sfc. 



EXPLANATION OF PLATE S. 



Fig. 1. Shoot of a bean as eaten hy Curculio (Otior/ii/fichus) picijjcs. 



a. Portions of excrement deposited by the weevils. 

 Fig. 2. A female weevil in repose. 



Fig. 3.* A male walking. 



b. The natural length. 



Fig. 4.* One of the mandibles, or jaws. 



Fig. 5.* One of the maxillse, or second pair of jaws. 



c. The palpus, or feeler. 

 Fig. 6.* Labium, or lower lip. 



d. Palpi, or feelers. 



Fig. 7. Larva or maggot, dead and shrivelled. 

 Fig. 8.* The same magnified. 

 Fig. 9. Under side of pupa. 

 Fig. 10.* The same magnified. 



Fig. 11.* Cerceris arenciria flying ; a little larger than life. 



Fii;-. 12. A young mangold-wurzel plant, eaten by the larva of uSilpha. 



Fig. 13. The young larva feeding. 



Fig. 14. The larva nearly full grown. 



Fig. 15.* One of the larvse. 



e The natural length. 

 Fig. 16.* Another of the larvae. 



/. The natural length. 

 Fig. 17.* One of the mandibles of the larvee," the inner lobe shining 

 through. 



Fig. 18.* The inner lobe detached. 

 Fig. 19.* The maxilla. 



g. The palpus, or feeler. 

 Fig. 20.* The mentum, or chin. 



h. The labium, or lip. 



i i. The palpi, or feelers. 

 Fig. 21.* One of the horns, or antennse. 

 Fig. 22.* A leg detached. 



Fig. 23. A male of Silpha opaca, running ; scarcely larger than life. 

 Fig. 24.* The female magnified, and represented flying. 

 Fig. 25. Larva of the shield-beetle. 

 Fig. 26. Pupa of the same. 



Fig. 27.* Cassicla nebiilosa, the beet shield-beetle. 

 k. The natural length. 

 Ohs. — Those numbers with a * attached refer to the objects which 

 are represented larger than life. All the figures are drawn from nature, 

 excevting figures 25 and 26, which are copied from De Geer. 



(The Copyright of this Paper is reserved to the Writer.) 

 Hayes, near Uxhridge, Oct,, 1847. 



Errata in the last Report, Vol. VII., p. 405, line 20. 



Tlie paragraph ought to have been thus worded : — There were, liowever, both gar- 

 deners and farmers (uniting a close attention fo ihe operations of nature with slcady 

 perseverance) who eventually succeeded in delecting the real cause of the mischief. 



Plate R, fig. 21, exhibits the pupa of the bean aphis. 



