PART IV.

VENOMS IN THE ANIMAL SERIES.

CHAP. XVI.--Venoms in the animal series.

1.--Invertebrates 269

A. _Cœlenterates_ 269

B. _Echinoderms_ 273

C. _Arthropods_: (_a_) _Araneids_ 274

(_b_) _Scorpions_ 276

(_c_) _Myriopods_ 280

(_d_) _Insects_ 281

D. _Molluscs_ 286

CHAP. XVII.--Venoms in the animal series (_continued_).

2.--Venomous fishes 288

A. _Teleostei. Acanthopterygii_: 1. _Triglidæ_ 290

-- -- 2. _Trachinidæ_ 297

-- -- 3. _Gobiidæ_ 300

-- -- 4. _Teuthididæ_ 301

-- -- 5. _Batrachiidæ_ 302

-- -- 6. _Pediculati_ 303

B. _Teleostei. Plectognathi_: 305

C. _Teleostei. Physostomi_: 307

-- -- 1. _Siluridæ_ 308

-- -- 2. _Murænidæ_ 309

CHAP. XVIII.--Venoms in the animal series (_continued_).

3.--Batrachians; Lizards; Mammals 312

A. Batrachians 312

B. Lizards 321

C. Mammals (_Ornithorhynchus_) 323