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XI. The comparative anatomy of the male genital tube in 

 Coleoptera. By D. Sharp, M.A., F.K.S., and 

 F. Mum, F.E.S. 



[Read February 7th, 1912.] 



Plates XLII-LXXVIII. 



ARRANGEMENT OF MEMOIR. 



I. Introductory. 

 11. Orismology and Technique. 



III. Morphology. 



A. Anatomy. 



B, General. 



IV. Function. 



V. Taxonomy and Phylogeny. 

 VI. Alphabetical Index to Families. 

 VII. Explanation of Plates. 



I. INTRODUCTORY. 



The object of this memoir is to review the structure of 

 the male genital tube throughout the Order Coleoptera. 

 This is not equivalent to a review of the male copulatory 

 organs. The modifications of the abdomen itself are 

 extremely extensive and varied, but we have perforce 

 omitted them, because the time at our disposal was 

 scarcely adequate for the accomplishment of the work, 

 the results of which are here presented. 



Mr. F. Muir, having returned to England for a year's 

 vacation in order to recruit his health after a long period 

 of arduous entomological work in the tropics, joined the 

 senior author at Brockenhurst, and the two combined 

 their efforts for the production of this memoir. 



A work of the kind is almost indispensable in the 

 present state of Coleopterology, and the authors hope 

 that it will be received as a much needed contribution to 

 a great subject. A subject too as to which, notwith- 

 standing its slight advancement, great misconception is 

 prevalent. 



trans, ent. soc. lond. 191 2. — part hi. (dec.) k k 



