102 



GEOGRAPHICAL DISTRIBUTION 



Opiptacris 10 

 Syntomacris 14 

 Stenacris 14, 16 

 Glaphyracris 14 

 Cbariacris 14 

 Pcepedetes 15 

 Pedies 15 

 Tinaria 4 

 Oxyphyma 14 ? 

 Cuculligera 2 

 Heteracris 2—5, 8—12 

 Leptacris 9 

 Caloptenus 1 — 16 

 Ommatolampis 14, 15 

 PlatacaDthus 5, 11 

 Platyphyma 2, 15 

 Podisroa 1, 2, 4—6, 13—16 

 Batracbopus 13 

 Pegasidion 15 

 Polysarcus 16 



Fam. 20. (EDiPODiDiE. 

 Pachytylus 1—12, 14 

 (Edipoda 1—16 

 Tomonotus 15, 16 

 Urnisa 11 

 Stauronotus 2, 3, 7 

 Hipp oped on 15 

 Stenobothrus 1—11, 13—16 

 Epacromia 1—6, 8 — 12 

 Stetheophyma 1, 2, 16 

 Parapleurus 1 

 Paracinema 2, 5 



Gomphocerus 1, 2, 7, 8, 10, 14, 16 

 Cbrysocbraon 1, 2, 14 

 Phlocerus 6 



The Dermaptera-fauna may be noticed with reference to the com-; 

 paratively recent natural changes on the surface of the earth. When the 

 latter part of the glacial period commenced an4 the arctic climate began 

 to retreat from the equator towards ibe poles, the insect-life in the tropical 

 regions was gradually developed or widened, and seot forth branches to the 

 north and to the south in the track of vegetation. In proportion as the 

 present inter-tropical Insect-fauna is more known it exhibits a greater 

 abundance of forms that correspond to those of temperate countries, and 

 this number will probably be much increased when the insects of the 

 mountains of low latitudes are more fully observed. The hot countries, on 

 the contrary, have many groups that are peculiarly their own and have no, 

 representatives elsewhere, an<i the fauna of each higher latitude may be 

 considered as a branch or colony from the fauna of the lower latitude, 

 whence it migrated according as conditions of temperature and arrange-? 

 ments of land and sea and vegetable distribution allowed its advance. The 



Tragocephala 16 

 Oxycoryphus 2, 3, 6, 15 

 Hyalopteryx 14, 12? 

 Sphenarium 15 

 Phloeoba 10 

 Sinipta 14 

 Pnorisa 5 

 Hemiacris 5 

 Morphacris 5 

 Ceracris 9 

 Mastax 8, 10, 14 

 Chrotogonus 3, 5, 9, 11 

 Thrinchus 2, 3, 6, 13? 

 Glyphanus 2 

 Leprus 15 

 Dactylotum 15 

 Trachypetra 5, 9 

 Phyllochoreia 9, 10 

 Hippiscus 15 

 Ommexecha 14 

 Pneumora 5 

 Cystoccelia 5 

 Graea 13 

 Bufonacris 14 



Fam. 21. Tex nam*. 

 Tettix 1—11, 13—16 

 Scelymena 8 — 10 

 Amorphopus 14 

 Cladonotus 4, 5, 8—10 

 fripetalocera 10 

 Paulinia 14 

 Choripbyllum 15 

 Hymenotes 4, 10 

 Pphiotettix 10 



