1G Piacaa. 
XV. Pisces— Euselaoiui. 
[1916] 
Hybodontidae. 
\Helicoprion bezaonovi, Karpinski 
94. 
■\Hybodua ensis p. 11 pi. ii. figs 2-7 
parvidena p. 12 pi. ii. figs. 8-14 spp. n. 
Wealden and Purbeck of England, 
Woodward Mon. Palaeont. Soc. 1915 
pt. 1. 
Squalidae. 
Somniosus sp. Macquarie Is., Waite 
219. 
HYPOTREMATA. 
Torpedinidae. 
Electric motor nerve cell, Daiilqren 
37. ] 
Eaiidae. 
Raia microtrachys sp. n. Lower Cali- 
fornia, Osburn & Nioiiols Bull. Amer. 
Mus. 35 p. 142 f. 1 ; R. omirnovi sp. n. 
Okhotsk Sea, Soldatov & Pavlenko 
Ann. mus. zool. Petrograd 20 p. 162 
pi. v. ; R. Kujiensis p. 173 tobae p. 313 
spp. n. Japan, Tanaka Dobuts. Z. 
Tokyo 28 ; R. batis post-pericardial 
body. Carter 26 ; R. clavata, labial 
cartilages, Allis 1. 
Trygonidae. 
Urolophua viridis p. 176 pi. Ii N.S. 
Wales expanaua p. 178 fig. 2 Australian 
Bight spp. n. McCulloch Biol. Res 
Endeavour 4. 
Urobatia concentricuae p. n. Lower 
California, Osburn & Nichols Bull. 
Amer. Mus. 35 p. 144 f. 2. 
Trygon pastinaca poison - organ, 
Evans 54 ; variation, Popta 142. 
Myliobatidab. 
] Hylaeobatia gen. n. problemaiica 
sp. n. Wealden of England, Woodward 
Mon. Palaeont. Soc. 1916 I p. 19 
pi. v. figs 1-6. 
Aetobalua narinari, Gudgbr 71. 
Mobulidae. 
Natural history notes, Coles, 35. 
PISCES. 
PALAEOPTERYGII. 
f Palaeoniscidae. 
\Acrolepis sp. Permian of S. Dakota, 
Hussakof Amer. J. Sci. 41 p. 347 figs. ; 
]A. laetus sp. n. Trias of Alberta, Lambe 
Tr. R. Soc. Canada 10 Sect. 4 p. 42 
pi. iii. 
| Elonichthya cupidineua sp. n. Trias 
of Alberta, Lambe Tr. R. Soc. Canada 
10 Sect. 4 p. 39 pi. ii. 
Aoipenseridae. 
Biology, Soldatov 186 ; GrCnbero 
67. 
Acipenser ruthenua, development 
Klimov 99 ; Ergomysev 63 ; Ostrou- 
mov 136. 
NEOPTERYGII. 
PROTOSPONDYLI. 
fSEMIONOTIDAE. 
\Lepidotua, Woodward 227. 
I Pycnodontidae. 
\Cododus ayriacua sp. n. Cretaceous 
of Syria, Hussakof Bull. Amer. Mus. 
35 p. 136 figs. 
ISOSPONDYLI. 
Elopidae. 
Elopa indicus, Chaudhuri Mem . 
Ind. Mus. 6 p. 413 fig. 
Clupeidae. 
Clupea holodon sp. n. Stewart Is., 
N. Zealand, Regan Ann. Mag. N. H. 
(8) 18 p. 5. C. harengua variation 
Orton 134 ; age, Lea 105 ; Paget & 
Savage 137 ; biology Pavlenko 139. 
Sardinella, larvae, Regan 153. 
Sardinia revision, Regan 158 
S. neopilchardua larvae, Regan 153. 
Aloaa ajricana sp. n. p. 8, N.W. Africa, 
finta killarnen8ia Killarney p. 9, /. 
algeriensis, Algiers, /. gracilia L. Garda 
p. 10 subspp. n., Regan Ann. Mag. 
N.H. (8) 18. 
Caspialosa gen. n. type Clupea caapia 
Berg Mat. Bozn. russk. rybolov. 4 
No. 6, p. 4 ; C. braahnikovi autumnalia 
subgpn. n. p. 7 pi. i, figs. 2, 3, Berg, t.o. 
Par aloaa gen. n. type Clupea dur- 
banenais , Regan Ann. Durban Mus. 
1 p. 167. 
Eihmidium gen. n. typo Clupea 
notacanthoidea, Thompson Proc. U.S. 
Nat. Mus. 50 p. 458. 
]Diplomystua brevicaudua sp. n. 
Miocan von Apscheron, Lednev M6m. 
Com. g6o. Petrograd 80 pp. 9-10, 44-46 
pi. ii. 
