Thanks for queen-bee larva and pupa.
Nervous system of Coccus.
High Elms, | Farnborough, | Kent.
10 June 58
I hope you are better. Many thanks for the Queen Bee larva & Pupa which will be
very useful some day.
The above two figures represent the posterior part of the subœsophageal ganglion, in the two species of Coccus whose nervous system I have examined. In C. persicæ? the ganglion end like a trident, whose 3 teeth pass gradually into the central stem and two lateral nerves.
In some specimens of both species I have seen the nerve a rise directly from the ganglion and not from the nerve b.
Believe me | Yours most sincerely | J Lubbock
C Darwin Esq
- f1 2284.f1John Lubbock was preparing a paper on the digestive and nervous systems of the insect Coccus hesperidum (Lubbock 1858). His paper was read at a meeting of the Royal Society on 18 November 1858. An offprint of the paper marked by CD is in the Darwin Pamphlet Collection–CUL.
- f2 2284.f2CD was impressed to hear that important organs like nerves were subject to variation in their number and position. Lubbock's information was cited in Origin, p. 46.