THE DEVELOPMENT OF PERIPATUS OAPENSIS. 
449 
The Development of Peripatus Capensis. 
By 
Adam Sedgwick., M.A., 
Fellow of Trinity College, Cambridge. 
PART I. 
With Plates XXXI and XXXII. 
Introduction. 
The development of Peripatus capensis was first studied 
by Moseley, 1 *who stopped for a short time at the Cape in 
November and December some years ago. His observations 
related only to stages which were comparatively late in develop- 
ment. Balfour, in 1882, found some younger embryos in speci- 
mens collected by Mr. Lloyd Morgan in July and August, and 
sent to Professor Huxley, who gave them to Balfour. He had 
only time to make a very few observations, of which he left a 
short record in the form of four rough drawings and a short note, 
and a letter to Professor Kleinenberg, before starting on his last 
expedition to Switzerland. His observations were so interest- 
ing that they were made the subject of a short communication 
to the Royal Society in the autumn of 1882, and they were 
slightly extended by the editors of his last work on the 
Anatomy of Peripatus capensis,’ and published with that 
monograph in the ‘ Quarterly J ournal of Microscopical 
Science ’ in the spring of 1883. 
The subject seemed so important that the Government 
Grant Committee of the Royal Society granted, in the spring of 
1883, the sum of £100 to enable me to go to the Cape for the 
1 ‘ Phil. Trans.,’ vol. 164. 
