[1922J 
XIII. 
Pisces. 
Pisces. 19 
MARSIPOBRANCHII. 
Spinal cord, Retzius 232 ; spermato- 
zoa and spermatogenesis, Retzius 233. 
Petromyzonidae. 
Revision of Holarctic genera and spp., 
Creaser & Hubbs Occ. Pap. Mus. zool. 
120 . 
Reighardirta subgen. n.' type Ich- 
Ihyomyzon fossor, Creaser & Hubbs 
t.c. p. 4. 
Tetrapleurodon subgen. n. type Lam- 
petra spadicea, Creaser & Hubbs 
t.c. p. 6. 
Lethenteron subgen. n. type Lampelra 
wilderi, Creaser & Hubbs t.c. p. 6. 
Okkelbergia subgen. n. type Lampelra 
lamottenii p. 8, 0. lamottenii dentition 
p. 14 pi. i, Creaser & Hubbs t.c. 
Ichlhyomyzon unicolor life history, 
Okkelberg 176. 
Lampelra mitsukurii vascular system, 
Hatta 116. 
Pelromyzon planeri cicatrisation, 
Giroud 97 ; P. fluviatilis spinal cord, 
Retzius 231 ; P. marinus dorsalus 
breeding habits, Coventry 58. 
Ammoeoetes pharyngeal grooves and 
thyroid gland, Wenig 295 ; mouth, 
Ayers 27 ; iodine and metamorphosis, 
RisMY 226 ; excretion and phagocytosis 
R^my 227. 
Myxine glutinosa spinal cord, Retzius 
231. 
Bdellosloma mouth, Ayers 27 
SELACHII. 
Branchial arches, Versluys 282. 
f ICHTH Y OD ORULITES. 
f Ctenacanthus bohemicus in Lower 
Devonian France, BisziER 36. 
f Psammosteus arcticus p. 23 pi. ii 
figs 5-7, pi. iii figs. 1-4, pi. v figs. 4-5 ; 
complicatus p. 26 pi. ii fig. 8, pi. v 
figs. 1-3, pi. vi figs 1-3 ; spp. n., 
Devonian Ellesmere Ld., Kiaer Rep. 
Norweg. Arct. Exp. 4 No. 33. 
EUSELACHII. 
Mixopterygia, Leigii-Suarpe 151. 
PLEUROTREMATA* 
jj Denaea gen. n., fournien sp. n. Car- 
boniferous Belgium, Prijvost Bui. 
Acad. roy. Bruxelles (5) 8 p. 213 fig. 1. 
CHL AM YDOS EL ACHID AE. 
Chlamydoselachus anguineus, Mer- 
TENS 166. 
IIexanchidae. 
Notidanus primegenius, Vardabasso 
280. 
Odontaspidae. 
Odontaspis cuspidata p. 11 pi .^i figs. 
3-4, acutissima p. 12 pi. i fig 5, Miocene 
N. Italy teeth, Vardabasso 280. 
Lamnidae. 
Selache maxima in Adriatic, Valle 
279. 
Car char odon megalodon p. 9 pi. i fig. 1, 
auriculatus p. 10 pi. i. fig. 2, Miocene 
N. Italy, teeth, Vardabasso 280 ; 
C. branneri p. 338 figs. 1a, 2, 3, riversi 
p. 340 fig. 1b, carcharias p. 340 fig Id, 
Pliocene California, tooth, Jordan 139 ; 
C. lanceolalus Eocene Egypt, teeth, 
Leriche 152 p. 206 pi. iv fig. 5. 
Isurus planus p. 342 fig. lc, glaucus 
p. 342 figs 1e, If, 1g, Pliocene California, 
teeth, Jordan t.c. 
Oxyrhina desori praecursor Eocene 
Egypt, teeth, Leriche 152 p. 205 pi. iv 
fig3. 3-4 ; O. hastalis p. 13 pi. i figs. 6-9, 
desori p. 14 pi. i figs. 10-12, Miocene N. 
Italy, teeth, Vardabasso t.c. 
Orectolobidae. 
Rhineodon typus recorded from At- 
lantic, Gudger 107. 
Ginglymostoma blanckenhorni Eocene 
EgypL teeth, Leriche 152 p. 204 pi. iv 
fig. 2. 
Parascyllium ferrugineum young, 
Waite Roo. S. Aust. Mus 2 p, 219 fig. 
Soyliorhinidae. 
Scyliorhinus canicula embryos, Win- 
TREBERT 303. 
