THE ANNALS 



AND 



MAGAZINE OF NATUEAL HISTORY. 



[SIXTH SERIES.] 

 No. 104. AUGUST 1896. 



XVII, — Further Notes on the Anatomy and Development of 

 Scorpions, and their hearing on the Classification of the Order. 

 By Malcolm Laurie, B.A., D.Sc, F.R.S.E., F.L.S., 

 Professor of Zoology at St. Mungo's College, Glasgow. 



[Plate IX.] 



Since the publication of my former notes on this subject * 

 1 have had an opportunity of examining a number of species 

 of Scorpions belonging to typical genera. This opportunity 

 I owe to the kindness of Mr. Pocock, of the British Museum, 

 and I gladly take this opportunity of thanking him. While 

 sufficient material has not yet been examined to enable me to 

 base a complete classification on it, nevertheless a number of 

 interesting facts have been ascertained with regard to the deve- 

 lopment, and it seems better to publish these without waiting 

 for the problematical arrival of further material. This is the 

 more advisable as I find it necessary now to revise some of 

 the conclusions to which my earlier observations seemed to 

 lead. As a general result I am more than ever convinced of 

 the great value of the mode of development as a basis for 

 classification, and am inclined to consider the structure of the 

 lung- book lamellge of subordinate but considerable value. 



* Ann. & Mag. Nat. Hist., March 1896, 

 Ann. dc Mag. N. Hist. Ser. 6. Vol. xviii. 9 



