xliv CONTENTS OF VOL. II. 
Tribe. II. Lungs tracheal. 
A. Thorax and abdomen distinct. 
Solpuga, Chelifer, Obisium. 
B. Thorax and abdomen united. 
1. Mandibles distinct. a. Phalangium. 6. Tro- 
gulus. : ‘ . 
II. Mandibles indistinct. a. Ixodes, Argus, Aca- 
rus, Erythreeus, Hydrachna. 6. Caris 
Section II. Head furnished with antenne. 
I. INSECTA. 
Principles of arrangements, Swammerdam, Linnzus, 
Fabricius. 
I. Insecta Mandibulata. 
Order I.—Co.LrorTERa. 
General characters. 
1. Cleoptera Pentamera. 
Pentamera Carnivora. 
Carnivora terrestria. Cicindelade. Carabidz. 
Carnivora aquatica. Dyticide. Gyrinede. 
Pentamera Microptera. 
1. Head exposed. Staphylinidae, Oxyporide. 
2. Head sunk in the thorax. Lomechuside, Tachi- 
nide. 
Pentamera Serricornua. 
a. Elateride, Buprestide, Melaside. 6. Lymoxy- 
lonide, Mastigoide, Malachiuside, Melyride, 
Cleruside. c. Ptinuside, Anobiumede.  d. Ce- 
brionide, Lampyridz, Telephoride. 
Pentamera Clavicornua. 
Dryopside, Histerida, Byrrhidz, Dermestide, Niti- 
dulidz, Silphide . 
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562 
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565 
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