ANATOMICAL SOCIETY OF GREAT BRITAIN AND IRELAND. Ivii 



which shows the orifice of the anus upon its posterior wall. The glans 

 is relativelj' large, oval in outline, and flattened on its dorsal and 

 ventral surfaces. On the ventral aspect is a capacious meatus bounded 

 by fissured lips. On the dorsal surface are two long horny spines 

 lying in apposition to the surface, with their points projecting beyond 

 the apex of the penis ; these are 1- inch in length, sharp pointed, and 

 slightly curved ; their globular bases fit into two cup-shaped depressions 

 in the epidermal covering of the glans, forming a ball-and-socket joint, 

 which admits of a considerable range of movement. Occupying the 

 dorsal surface between these are numerous much shorter spines, with- 

 out uniformity of arrangement or direction. The whole glans penis is 

 studded over with minute papillae, which are larger on the dorsal than 

 the ventral surface. Embedded in the substance of the glans is the 



%y I 



Fig. 3. —A, genito-urinary organs, Jerboa ; B, penis of Jerboa (dorsal aspect). 



rod-shaped os penis; the anterior end of this projects slightly into 

 the roof of the fossa navicularis, while the posterior end lies just 

 behind the bases of the long styles, with which it has no apparent 

 connection. 



(11) Professor A. M. Paterson exhibited tico ca.'<es of Congenital 

 Diaphragmatic Hernia. 



Both examples occurred by deficiency of the left half of the dia- 

 phragm in full-time female foetuses. 



In one case (a) the diaphragm is almost completely absent on the 

 left side, the only remaining portion being a sterno-vertebral band 



