No. 3.] MUSCLES AND NERVES IN AMIA CALVA. 489 
PAGE 
Ate AAdUCtOres ATCUUM Branchialaum lessee ee een ieee ese eee 671 
Ropbniterarcuales : Ventraless 2.22.05... scsctestenscecctel coos ates ncbeeeed eter ene lar eaeet ee 672 
Ai ODL tt VCMER ATES) ear aoe Ee re eee ae 672 
De Lvs erst Verte Ole crs cons ccctaat ten cement eee 675 
c. Pharyngo-Clavicularis Externus and [nter nus .......cecececceeeeececeeeee 676 
Gufhkeview and Comparison’ of, Muscless:22.2 tee eee 677 
Fe Ne GUS! GlOSSOpharyn Zeus ieee ssc y a eee ere FS LS ok eer 683 
SUPINE MIS IN AOUS .incccasccetseve: vedassdcecenactsbatecnscsc ease cee retee soa eee nes em 688 
IV. Muscies INNERVATED BY THE POSTVAGAL OR OCCIPITAL NERVES, 
AND THE NERVI OCCIPITALES. 
PepesT ANC O1OMAN GID ULATES: .ai2.o058s.25-xcxnectmaseucct cece at. at teeta eee coe ee sense 698 
PaOLE TONY OMUCUS sot. tescee 2 cept aaee eee si seusrarunsbectretuctunibessuosteeseteltann, suse oueaaees 701 
BeOccipitalvemion Of Skul le oi 5 rosea ae cate eee ec 702 
4. Occipital Nerves and Corresponding Muscle Segments...............22..::cceeee0- 723 
Romie view, ANG: COMPATISON, .°..52.20sessssccns. te cvesstesive erase ere ee 735 
(GENERATES U MMAR Vi o22 00255 3.2 ssa cccstaas-cs2, seve sataneceee seosesueeee ore ree ee ee 737 
INTRODUCTION. 
Mucu the larger part of the purely investigative work on 
which the present memoir is based was done in 1886, in con- 
nection with a work on which I was at that time particularly 
engaged: “The Anatomy and Development of the Lateral 
Line System in Amia Calva.’’ It was done simply to better 
understand the serial sections on which I was working, and the 
notes and sketches once made were put away as of no special 
value to any one but myself, it being assumed that the several 
memoirs already published on the cranial nerves and cranial 
muscles of Amia (van Wijhe, Sagemehl, McMurrich, Wright) 
were so full and complete that any further publication on the 
subject would be not only unnecessary but superfluous. 
In 1889, after the publication of my earlier memoir, the notes 
and sketches put away in 1886 were taken up for more careful 
examination as a study preliminary to an investigation of the 
central origin of the peripheral nerves. A little study and 
consideration convinced me that such frequent reference would 
have to be made to my own work, rather than to that of others, 
that it would be much better for my purpose, even at the risk 
of considerable repetition, to make and publish a brief but full 
account of my results before beginning the research I especially 
