My dear Mr Darwin

I continue my observations on things which interest you and before I forget it let me tell you that Professor Huxley wrote a paper on the relationship of birds to reptiles which was reprinted in the “Annals” but I do not know exactly when,—about 2 or 3 years ago.—¹

Considering the subject for a while I thought that the most bird-like Lizards would be those who occasionally hop on their hind-legs, and after a a short examination of specimens at hand, I came to the conclusion that our Grammatophora’s and similar genera would perhaps solve the question²   At that time I had a kind of vivarium near the entrance gate to the Museum but those young monkeys our boys³ were too much for the establishment they always managed to injure my specimens & I was about removing the case when it occurred to me to try the frilled Lizards, whereof I had several, with a surprise. Stepping into the enclosure I made a dart at one of them when crouched in a corner (catching sunbeams) and appearing altogether very comfortable; to my surprise the Lizard expanded her frill (which was natural) and rose her fore legs off the ground—taking a position which I had never seen before in a lizard & which only one Lizard in my opinion can assume and that is this identical Chlamydosaurus Kingii.⁴ I kept my specimens for a few weeks longer and by sudden darts, made some of them not only rise, but “hop” once or twice.— The facts were communicated to Professor Huxley but nothing came of it; I even went to the trouble to forward a skeleton of a Chlamydosaurus but nothing more was heard of its arrival nor were any of my letters acknowledged & I presume they were lost.—

Considering the subject of importance I now communicate it to you and when you come to consider the general structure and the habits of Lizards you must confess that very few of the tribe could perform the feat and rise on their hind legs.—

A few days ago I received the accompanying Chrysalis of a Papilio Sarpedon from Mr G. Masters (Assist. Curator to this Museum & a keen observer) which I had photographed & now forward to you.⁵ My friend tells me that he received the specimen from a “nurseryman” Mr Shepperd I think whose garden is one of the best near this City⁶   Mr S. noticed the grubs feeding on some plant & covered it over with a net but in spite of his care he confesses to have been unable for a long time to find the Chrysalis which as you observe looks very much like the leaf to which it is attached & is of the same pale sea-green colour

I think it is one of the finest examples of mimickery in a Chrysalis I have seen or heard of & it is not to be wondered at that the Chrysalis of Papilio sarpedon has escaped observation so long.—

I hope you received the set of large Photo’s of Queensland Blacks I sent you by last mail⁷ & I remain | dear Mr Darwin | Yours very faithfully | Gerard Krefft

Many thanks for your kind present.⁸ I also enclose a group of New Guinea men taken by Mr D’Albertis an Italian gentleman recently arrived here from N G.⁹ I also send some meteorological observation to show how it can rain here.—¹⁰ | GK