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PROF. W. V,. BJ:NHA.5I ON THE 



[May 21, 



surface of the prostate, and encircling also the seminal ducts and 

 the urethra ; it arises, however, from the " interpelvic ligament " 

 (which represeuts the " pelvic fascia "). I find that in Cogia 

 some of the fibres of this muscle originate from the inner and 

 upper faces of the crura penis. 



Another muscle, though cut through, may be mentioned. On 

 each side, and immediately below the cut edge of the pelvic 

 fascia, is a fairly stout bundle of longitudinal fibres (PI. XI. 

 fig. 24, lev.), which, passing backwards, loses itself in the mass of 

 muscle above referred to as " sphincter ani " ; this pair of muscles 

 appears to be the levator es ani. 



Text-fig. 7. 



Muscles of Penis of Eisso's Grampus, seen from below (copied from Turner). 



A. M. accelerator urina 1 . 

 A'. Its posterior moiety. 



B. M. erector penis. 

 pel. Pelvic bone. 



Remarks. — If we compare the penial muscles of Cogia with 

 those in Grampus as described by Prof. Turner [15], and with 



