THE DKVELOPMKNT OF ADiMET[IS PUMILIO. 595 



The Development of Admetus pumilio, Koch: 

 a Contribution to the Embryology of the 

 Pedipalps. 



By 



L. H. Oougli. 



With Plates 32 and 33. 



Introduction. 



I REGAN iny investigations of the development of Admetus 

 pumilio in November, 1899. During the previous year I 

 had been stadying the development of spiders under Prof. 

 A. Goette, in Strassburg. 



Througli the kitiduess of Prof. R, Burckhardfc I received 

 materials to examine, which he had obtained from Dr. Goelde, 

 in Para. 'J'lieso materials consisted of two feniales of 

 Admetus pumilio, each of which carried a batch of 

 eggs, which will be described under Stages II and V. 



In January, 1900, I received two further batches of eggs, 

 this time through the kindness of Dr. G. Hagmanu, also in 

 Para; unfortunately only one of these batches was of use; 

 from it I procured Stages I, III, and IV; the other had 

 been deserted by the mother animal, as Dr. Hagmaun stated. 

 Cuts througli embryos coming from this batch only show an 

 inner mass of yolk surrounded by a thick and dense layer of 

 bacilli. I was not able to procure any further material. 



At this place I must also express my thanks to Prof. 

 F. Zschokke, Director of the Zoological Institute of the 



