^12 Journal of CoMPAUATnE Neitrology. 



Rami Knozvn as Nerve Trunks. — NN. pudicus, cutaneiis 

 internus brevis, popliteus, peroneus, gluteus, q. v. 



N^. Peroneus. — Origin: Division of N. ischiadicus cen- 

 trad of knee. Distribution: Ra?ni: JV. tn?isculo-cutancHS , in- 

 tegument of dorsum of foot, and second, third and fourth 

 toes, M. peroneus brevis, M. peroneus tertius; N. tibialis 

 anticus, MM. tibialis anticus, extensor longus digitorum, 

 extensor brevis digitorum; ligamentum tarsale; plexus dor- 

 salis pedis. 



JV. Popliteus. — Origin: Division of N. ischiadicus, cen- 

 trad of knee. Distribution: MM. gastrocnemius, soleus, 

 popliteus, flexor longus digitorum, tibialis posticus, flexor 

 longus pollicis( .'), flexor brevis digitorum, transversus, ab- 

 ductor minimi, interossei; integument of foot and pads. 



A^. Pudicus. — Origin: Pzvo roots, sciatic and sacral. 

 Distribution : Dorsal division, to MM. levator ani, sphincter 

 ani; rectum, vagina, anal gland; ventral division, to M. 

 accelerator urinae, perineum, vagina, ectal labium, urethra, 

 glans clitoris, platetrope! 



coccygeal nerves. 



Characters in common: Paired, seven or more pairs; 

 great length of ectal roots; rapid decrease in size, caudad; 

 dorsal and ventral divisions; dorsal divisions unite to form a 

 dorsal trunk, N. dorsalis, and the ventral divisions form 

 ventral trunk, N. ventralis. 



Distribution: Muscles and integument of tail. 



N. Coccygcus cephalicus. — Origin: First coccygeal nerve. 

 Distribution: MM. levator ani, sphincter ani; gives anasto- 

 motic loop to third sacral nerve in the sacral plexus; by its 

 rami forms the coccygeal roots of several nerves — N. coccy- 

 geus, nerve to the urocyst, nerve to ribband muscle. 



DESCRIPTION OF DIAGRAM. 



A. />;«., arteria femoralis; ylrr., musculus accelerator urinae; anas., 

 N. anastomoticus; Crt., divisio caudalis: TV., divisio cephalica; C/., 

 glans clitoris; rriir., criiral division of the gcnito-crural nerve; (Jitc, 



