A Monograph of the Sub-class Cirripedia, with Figures of all the Species.

In October, 1846, he began the studies embodied in "Cirripedia" (barnacles).

In October, 1846, I began to work on 'Cirripedia.'

I use Agassiz's nomenclator; at least two-thirds of the dates in the Cirripedia are grossly wrong.

I have been getting on well with my beloved Cirripedia, and get more skilful in dissection.

As Darwin had studied and classified the Cirripedia, so would he write an essay on Rhizopods.

These classes are the Crustacea, Cirripedia, and Annelida.

In the "Monograph on the Cirripedia" (Lepadidae) the names used are Conchoderma aurita and virgata.)

I am at work at the second volume of the Cirripedia, of which creatures I am wonderfully tired.

A Monograph of the Sub-class Cirripedia.

Publication of a "Monograph of the Fossil Lepadidae" and of a "Monograph of the sub-class Cirripedia".

Chthamalus, a genus of Cirripedia.

For the olfactory sacs see Darwin's "Monograph of the Cirripedia," 1851, page 52.

So I must make the best of my Cirripedia...

The Cirripedia, which you and Dr. Gould were so good as to send me, have proved of great service to me.

I find every genus of Cirripedia has half-a-dozen names, and not one careful description of any one species in any one genus.