496 



H. W. NORRIS AND SALLY P. HUGHES 



jo., organ on Jacobsoni 



lab., m. levator arcuum branchialium 



lar., larynx 



lar.rec, r. laryngeus recurrens X 



Ibaur., "lobus auricularis" of med. obi. 



Ibll., lobus lineae lateralis 



Ibr., m. levator branchiae 



Id., mm. latissimi dorsi 



Ih., m. levator hyoidei 



Iq., m. levator quadrati 



mas.l., m. masseter anterior, main por- 

 tion of masseter muscle 



inas.2, m. masseter posterior = adduc- 

 tor mandibulae minor of Luther 



max., OS maxillare 



maxp., palatine process of maxilla 



mck., cartilago Meckelii 



md., r. mandibularis V 



tnd.l., small ramulus of r. md. V inner- 

 vating the masseter, temporal and 

 compressor of orbital gland muscles 



md.2, lateral sensory ramulus of r. md. V 



fnd.4, rm. mandibularis externus X 



md.^a, rm. alveolaris of rm. md. ext. V. 



md.5, rm. intermandibularis V 



mo., medulla oblongata 



mll.ext.,r. mentalis externus VII 



mil.int., r. mentalis internus VII 



mx., r. maxillaris V 



mx.l, medial ramulus of r. mx. V 



mx,l + -pal.^, temporary fusion of 

 branches of medial ramulus of r. mx. 

 V and lateral ramulus of r. palatinus 

 VII 



mx.fi, lateral ramulus of r. mx. V 



nas., nasal cavity 



nas.-Tpmx., os naso-premaxillare 



nc., cartilago nasalis 



oc., eyeball 



occ, condylus occipitalis 



ocn., n. occipitalis 



op., r. ophthalmicus profundus V 



op.l , im, .ophthalmicus profundus minor 

 (in part) 



op.l + OS., union of r. oph. superficialis 

 Vn with rm. op. 1, V 



op.8, rm. nasalis internus = main 

 trunk of r. oph. pjof . V 



op.2b, small branches of r. oph. prof. 



V innervating olfactory membrane 

 op.2v, ventral ramulus of rm. nas. int. 



supplying the skin on ventral surface 



of snout 

 op.3, rm. nasalis externus 

 OS., r. ophthalmicus superficialis VII 

 osph., orbitosphenoid bone or cartilage 

 pa., OS parietale 

 pal., r. palatinus VII 

 pal.l, mesial ramulus of r. pal. VII 

 pal.l + mx.l, union of rm. pal. 1 with 



a branch of the mesial ramulus of r, 



mx. V 

 pal.2, lateral ramulus of r. pal. VII 

 pi., OS palatinum 

 psph., OS. parasphenoidale 

 pt., m. pterygoideus and nerve supply- 

 ing it 

 ptc, cartilaginous articulation between 



the pterygo-quadrate and basal bones 

 ptfr., OS postfrontale 

 pt.-qu., OS pterygo-quadratum = sus- 



pensorium 

 ra., m. rectus abdominis 

 ral., m. rectus abdominis lateralis 

 rath., m. rectus abdominis thoracico- 



hyoideus 

 rext., m. rectus lateralis 

 rinf., m. rectus ventralis 

 rint., m. rectus medialis 

 rs., m. rectus dorsalis 

 rsv., m. rectus subvertebralis 

 rt., m. retractor tentaculi 

 rtb., m. retractor bulbi 

 rts., retractor muscle of the tentacular 



sheath 

 sa., mm. subarcuales 

 sd., muscle designated as "Seitswarts- 



krummer des Rumpfes" by Wieders- 



heim 

 ser., m. serratus (of Wiedersheim) 

 so., m. obliquus dorsalis 

 sphc, equivalent of m. sphincter colli 



of the Urodela 

 sp.V, tractus spinalis trigemini 

 sp.l, 2, etc., spinal nerves 

 sp.ld., 2d., etc., dorsal rami of spinal 



nerves 



