494 ANOMALOUS STRUCTURE AT BASE OF BLADDER. 



The mucous membrane lining each tube is continuous with 

 that hning the internal surface of the urethra. 



Possibly these two structures may be the lower ends of the 

 ducts of Miiller, which have persisted into adult life. In that 

 case it would appear that the fusion of the lower ends of the 

 Milllerian ducts had not taken place during fcetal life, as is 

 usually the case in Primates. 



The asymmetry of the two vestigial structures and the median 

 position occupied by each of them is a remarkable feature of 

 this case. 



V 



ANOMALY OF OMO-HYOID. By J. Ernest Frazer, 

 F.E.C.S., Demonstrator of Anatomy, St Georges Hospital, 

 S.W. 



On the right side of the neck of a female subject dissected 

 this winter in St George's Hospital School, the following 

 disposition of the omo-hyoid muscle was observed. 



The upper end of the intermediate tendon bifurcated, 

 one portion going to the upper belly of the muscle, the 

 other running inwards to reach the sterno-hyoid ; here it 

 became directly continuous with an intersection in that muscle, 

 especially marked on its deep surface. Into this tendinous 

 bridge between the two muscles, groups of muscular fibres 

 were inserted, attached above to the hyoid bone, those in the 

 angle of bifurcation of the intermediate tendon forming ap- 

 parently part of the upper omo-hyoid belly, the remainder 

 forming a muscle lying between this and the sterno-hyoid. 

 This intermediate muscle was in contact with the upper 

 belly, but easily separated frojn it, a little loose tissue in- 

 tervening; but on its inner side it was separated from the 

 upper part of the sterno-hyoid by a thick fascia containing 

 strands of muscular fibres, so that practically the whole length 

 of the upper margin of the tendinous bridge afforded points 

 of attachment to infra-hyoid muscular fibres. 



The fascia below the bridge had been removed before my 

 attention was called to this structure, so I cannot give 



