xliv CONTENTS OF VOL. II. 



Page. 

 Tribe. II. Lungs tracheal. 



A. Thorax and abdomen distinct. 



Solpuga, Chelifer, Obisium. 558 



B. Thorax and abdomen united. 



I. Mandibles distinct, a. Phalangium. b. Tro- 



gulus. . . ib. 



II. Mandibles indistinct, a. Ixodes, Argus, Aca- 



rus, Erythraeus, Hydrachna. b. Caris . ib. 



Section II. Head furnished with antennae. 

 I. INSECTA. 

 Principles of arrangements, Swammerdam, Linnaeus, 



Fabricius. . . ib. 



I. Insecta Mandibulata. 



Order I. COLEOPTERA. 



General characters. .560 



1. Cleoptera Pentamera. 



Pentamera Carnivora. 



Carnivora terrestria. Cicindeladae. Carabidae. . 56*2 

 Carnivora aquatica. Dyticidae. Gyrinedse. . 564 

 Pentamera Microptera. 



1. Head exposed. Staphylinidae, Oxyporidae. . 565 



2. Head sunk in the thorax. Lomechusidae, Tachi- 



nidae. . . 566 



Pentamera Serricornua. 



a. Elateridae, Buprestidae, Melasidae. b. Lymoxy- 

 lonidae, Mastigoidae, Malachiusidae, Melyridae, 

 Clerusidar. c. Ptinusidae, Anobiumedae. d. Ce- 

 brionidae, Lampyridae, Telephoridae. . . ib. 



Pentamera Clavicornua. 



Dryopsidae, Histeridae, Byrrhidae, Dermestidae, Niti- 



dulidae, Silphidae- . . .56? 



