ANALYTICAL SUBJECT INDEX 



The Dean Memorial Volume is so large and heavy that it seems advisable that it be bound as Part I containing 

 Articles I, II, III, IV and V; and Part II containing Articles VI, VII and VIII together with the Index. The 

 pagination is continuous and Part II begins with page 331. 



Abel, O., 



on Dmichthys, 176, 180 

 Heterostius, 180 

 Acanthaspida, 157, 169, 177, 199, 200, 208 



carapace, 179, 210 



fin, dorsal, 198 

 Acanthaspis, 



fin, 198 



scales, 210 



spinal (plate), 176, 177 

 Acanthias, 



canals, 455 



cranium, 351 



muscles, 390, 394 



vitelline circulation, 620 

 A. vulgaris, see Squalus acanthias 

 Acanthodians, myxopterygia, 724 

 Acrodus, dentition, 697 

 Adams, L. A., 



on Arthrodira, 184, 187, 198 



Dimchthys, 121, 152, 185, 188, 189, 190 

 Adams-Jaekel theory, 185, 187 

 Agar, W. E., on Protofjterus, 389 

 Agassij, L., on Coccosteus, 145, 202, 208 

 Agnathostomata, 67, 100 

 Alien, G., on Heterodontidae, 707 

 AUis, E. P., 



on Chlamydosehchus, 268, 269, 278, 279, 

 290, 350, 351, 355, 356, 357, 359, 360, 

 362, 391 , 396, 397, 398, 399, 400, 415, 

 416, 428, 463, 465, 474, 475, 477, 479, 

 480, 481, 492, 629 

 Heterodontus, 662 

 Squalus, 492 

 Amia, egg, cleavage lines, 725, 726 

 Amphibia, gills, 629 

 Amphioxus, 70, 357, 416 



cartilage, labial, 357 



thyroid, 416 

 Angarichthys, spinal (plate), 177 

 Angulare (plate), 175, 185 

 Antiarchi, 177, 180, 187, 208-209 

 Aorta, 



Chlamydoselachus, 461-466 



embryonic, 465 



Heptanchus, 464 



Squalus acanthias, 464, 465 

 Apertures, CMamydoselachus, 



abdominal, VI-v* 



urethral, 443 

 Arches, 



basibranchial, 



CMamydoselachus, 359, 361, 362, 363 



Heptanchus, 363 



Hexanchus, 363 

 basihyoid, 



Chlamydoselachus, 360 

 branchial, 



Chlamydoselachus, 358-363, 396, 420, 

 468, 661, 662, 742, 743, 744 ,746; Vl-in 



Heptanchus, 363 



Heterodontus, 662, 744, 745 



H. japonicus, 742, 743, 744 



H. philhpt, 662 

 gill, 



Arthrodira, 199-202, 207, 391 



Chlamydoselachus, 358, 363, 420-423, 

 593, 595, 597, 598, 599, 600, 601, 604- 

 617, 623, 626 



Coccosteus, 199 



Dinichthys, 199, 200-202 



Selachii, 391, 743 



Squalus, 594, 596, 600, 601 

 hyoid, 



Arthrodira, 207 



Chlamydoselachus, 359 



Dmichthys, 201 



sharks, 699 

 hyomandibular, 



Chlamydoselachus, 358 



Heptanchus, 700 



Heterodontidae, 662 



Hybodus basanus, 701 



sharks, 699, 700 

 mandibular, 



Chlamydoselachus, 356, 396 



Dinichthys, 202 



Heterodontus jafjonicus, 662, 744, 745 

 neural, 



Cestraciontidae, 696 



Hybodontidae, 696 

 pharyngeal in Selachii, 743 

 phylogeny of, 363 

 visceral, 



Chlamydoselachus, 356, 363, 390, 396 



Heptanchus, 356 



Hexanchus, 356 



nerves, origin of, 399 



Scyllium canicula, 476 



Torpedo, 743 

 Armor, 



Antiarchi, ventral, 209 

 Arthrodira, 



head, 122-126, 208 



ventral, 198, 201 

 Chondrostei, head, 204 



Dmichthys, 



dorsal, 117, 119, 120, 125, 160-170 

 head, 117, 125, 127-152, 153-159, 185- 



188, 189-192, 205; IV-i— IV-iii 

 ventral, 119, 120, 125, 170-174, 175, 

 180,188,189,191,192,200 

 MacTOpetalichthys, 204, 206 

 Rhynchodontus, 203 

 Armor plates, see Arthrodira, Coccosteus, 



Dinichthys 

 Arterial ring, 



Chlamydoselachus, 617-622, 749 

 Heterodontus japonicus, 749 

 Pristiurus, 618, 748-749 

 Arteries, 



Bdeliostoma, 90 



Chlamydoselachus, 461-471, 603, 617-621 



Elasmobranchii, 471 



Heptanchus, 467-468 



Heterodontus japonicus, 749, 750, 751, 752; 



VIII-v, VIII-vi 

 7v(otorhynchus, 468 



vitelline, see Heterodontus and Pristiurus 

 below 

 Arterioles, Chlamydoselachus, 749, 751 

 Arthrodira, 



arch, gill, 199-202, 207 



hyoid, 207 

 armor, head, 122-126, 208 



ventral, 198, 201 

 armor plates, 



antero-ventro-lateral, 172 

 post-marginal, 134, 135 

 post-sub-orbital 202 

 spinal, 176, 179 

 canal, sensory, 122, 126, 135-137, 139 

 dentition, 146, 206, 207 

 fins, 195, 197-198, 200 



pectoral, 197, 198, 200 

 gill, 210 



girdle, pelvic, 197, 198 

 head, 180, 200, 204, 205, 218 

 jaw, 145, 184-185, 187, 207 

 mouth, 187-192 

 muscles, 194 

 neurocranium, 192-194 

 phylogeny, 202-211 

 reconstruction, 122, 123, 142 

 Asterolepida, 132, 179, 180, 208 

 Ayers, H., 



on Bdeliostoma, 77, 92 



Chlamydoselachus, 352, 459, 461, 463, 

 467, 471 



*Since the plates of each article are numbered consecutively they are herein referred to by designations indicating both articles and plates. 

 Thus, V-ii, means Article five, Plate two. 



785 



