THE ANATOMY AND DEVELOPMENT OF THE 
LATERAL LINE SYSTEM IN’ AMIA CALVA 
EDWARD PHELPS ALLIS, Junr. 
CONTENTS. 
PAGE 
INTRODUCEION co <ibiss aoe) as) acca ie 0 an) soon afi diem ie et eet nmi me mmr OFS 
PAGE 
I. ADULT FORM. 3. Supra-orbital Line . . . . 491 
se ae . Operculo-mandibular Line. . 
General Description. . . . . . 465 ae ae 
Courselot the'Canals; = 2. . ~ 470 II. Post-LARVAL Forms. 
1. Infra-orbital Canal. . . . 471 | 1, Primary Pores. . . AGA. 
2. Supra-orbital Canal . . . - 472 | 2. Number and Position of ‘Carta 
3. Operculo-mandibular Canal. . 473 Organs. . . . 499 
4. Supratemporal Cross-commis- 3. Sense-organs of the Suirucilas 
SUES o/s : 473 Canali ot 5.1%5, Garde SON 
Topography of the Peripheral Canal- 4. Lines of Pit Organs...) 2. 7=) . 502 
systems . . oe to Sis Ae @...-Head, Lanesy sti. Satan ee ee505 
1. Infra-orbital Canal) i oe elf 6; Body’ Bines) in) et gay 
2. Lateral Line of the Body . ~ 483 | 5. Surface Sense-organs . . . . 509 
3. Supratemporal Cross-commis- 6. Innervation. . . . . 510 
sure. . . - + «+ + 483 | 7. Review of Nerves and Oars S20 
4. Supra-orbital ties Sowa rt PASS 
5. Operculo-mandibular Line . . 485 III. Larvar Forms. 
G Summary. «+ . - . = » 4686 | x. Formationiof the Canals 4.7.) 523 
Surface’ Pores 2 . << . . - «|. 487 | 2. Originvot the Canal/@rpans. 4 0. ge 
i Intea-orbital’ Line. 2. |). 487 General Summary . . . . 535 
2. Lateral Line of the Body . . 490 | 
THE general course and position of the lateral canals in fishes 
have long been known, and short descriptions and diagrams, 
showing what is commonly accepted as the typical arrangement 
of the main canals, are given in nearly all modern text-books 
of vertebrate anatomy. More complete descriptions are given 
in numerous special works, most of which deal more particularly 
with other subjects, such as the structure of the skull, the 
