486 OSKAR FLECK, 



ralis s. medianus, i. e. the striped muscles of the anus. 

 3. Several entirely cutaneous branches are distributed over 

 that region. - - ß and y supply, like the other spinal nerves, 

 the M. caudo-ischiadicus ; the share of ß in this is, however, 

 very small. The stem ß receives a brauch from y and from a, 

 trough which combination a sort of individually most variable 

 plexus is formed ; it supplies with several branches the muscles 

 of the dorsal and of the lateral wall of the urinary Chamber, 

 and, moreover, the penis or clitoris, and lastly trough many 

 ramifications the rest of the whole cloacal vestibulum s. procto- 

 daeum." 



"In the Lizards the anal and sexual muscles are likewise 

 supplied by postsacral nerves, which chiefly bolong - - like 

 in the Crocodiles - - to stem a in Monitor, Cnemidophorus, 

 Hatteria ; or to stems a -j- S in Cyclodus, Platydactylus, Lacerta 

 viridis, Ophryoessa, Polychrus ; or to stems a -f- ß in Cha- 

 maeleon. 



The cloacal region in Emys is supplied chiefly by the 

 22 nd, 23 rd and 24 th nerves, i. e. y -f- b -\- e, the penis by the 

 24 th and 25 th = s -f- s. The same formula applie to Testudo 

 graeca. All these cloacal and copulatory nerve-branches run 

 between the cloacal lateral walls and the M. lumbo-caudalis 

 and M. pubi-caudalis, branching of from the whole spinal 

 nerve-stems near the middle line." 



Es wird also vom ersten postsakralen Nerven die quer- 

 gestreifte Muskulatur des Anus versorgt, vom zweiten post- 

 sakralen Nerven der Penis resp. die Klitoris. Ferner geht 

 daraus hervor, dass der Penis, wenn er auch zum Teil von 

 einem Nerven versorgt wird, der auch an der Versorgung der 

 Kloake Anteil nimmt, doch weiter noch von einem 

 kaudaler gelegenen Nerven versorgt wir d. A lle 

 diese Tatsachen sprechen dafür, dass m a n d e n Penis des 



