Sends drawings of two forms of workers of Cryptocerus discocephalus in response to CD’s request for examples of insects whose workers show disparity of form.
Identifies an ant described by CD and discusses the predatory habits of Formica sanguinea.
Describes some wasps’ nests.
Reports his observations on the habits of slave-making ants (Formica sanguinea).
Has studied CD’s Jamaican hive-bees and finds them identical to Apis mellifica.
Discusses the structure of wasps’ and bees’ nests
and the occurrence of winged and apterous individuals within some insect genera and species.
Roughly identifies some insects sent by CD; is waiting to see Francis Walker, who, he believes, has written a monograph on the family to which they belong.
Has seen Francis Walker, who has identified CD’s two Hymenoptera species ["caught in Musk Orchis" – CD note].
Has been unable to find a book [unspecified] wanted by CD.
Discusses the stinging habits of wasps and bees and whether or not they leave their sting in the wound.
On the relative size of sexes in aculeate Hymenoptera. [See Descent 1: 347–8.]
On the colours of sexes of Australian bees [see Descent 1: 366].
On stridulation of Coleoptera, Trox sabulosus, Mutilla. [See Descent 1: 380.]
Both sexes of Mononychus pseudacori and other Coleoptera stridulate.
Sends reference to stridulation in an article about Scolytus by Dr Chapman "Observations on the economy of British species of Scolytus", Entomol. Mon. Mag. 6 (1870): 126–31.
Thanks CD for specimens of, and curious facts on, the "harvesting ant".