SOME POINTS IN DEVELOPMENT OF SCORPIO FULVIPES. 587 



Some Points in the Development of Scorpio 

 fulvipes. 



By 

 Afalcolm liaurie, B.Sc*, F.li.S. 



With Plate XL. 



In the introduction to my paper on the development of 

 Euscorpius italicus (' Q,uart. Journ. Micr. Sci./ vol. 

 xxxi) I mentioned that a species of scorpion (Scorpio 

 fulvipes), which I was permitted to examine by the kind- 

 ness of Professor Lankester, showed a considerable difference 

 in its mode of development from that of Euscorpius. This 

 difference is, as there stated, fundamentally due to the absence 

 of yolk from the egg of S corpio fulvipes, in which particular 

 it contrasts strongly with that of Euscorpius, in which the 

 proportion of yolk is enormous. Further examination of more 

 abundant material, which Professor Bourne of Madras collected 

 and preserved with great care and forwarded to Professor Lan- 

 kester, shows that the specialisation of the embryo in relation 

 to its mode of nutrition has reached a very high pitch. 



A few notes with regard to this particular form of Scorpion 

 development will, it is hoped, be of some service towards an 

 understanding of the embryology of Scorpions^ and Arthro- 

 poda generally. 



Ovary and Ovarian Egg. 

 The species of Scorpion of which the female reproductive 

 organs are described by Duvernoy appears to agree in the pecu- 



