174 



[July, 



will bear out the truth of this observation, and it mai/he demonstrated 

 that the cerci and the curious process formed by the folded-up wing 

 in some of the Gj^yllidcB are terminal sensory organs in those insects 

 which are accustomed to run in and out of holes where they cannot 

 turn round. The long cerci in the Blattidce suggest the same idea. 



LIST OF THE BRITISH ORTROPTERA. 

 Fam. I.— FORFICULID^. 



Labidfra. 

 1. riparia, Pall. 



gigantea, Fair., Steph. 



Anisolabis. 

 (?) 1. maritima, Bon. 

 Labia. 

 1. ruiuor, L. 



FOEFICULA. 



1. auricularia, L. 



2. pubescens, Gene. 



Cheliduea. 

 \. albipennis, Meg. 



Fam. II.— BLATTID^. 



ECTOBIA. 



1. lappoiiica, L. 



2. Panzeri, Steph. 



ericetorum, Wesni. 

 var. nigripes, Steph. 



3. livida, Fahr. 



Phtllodromia. 

 1. germanica, L. 



Pekiplaneta. 



1. orientalis, L. 



2. araericana, L. 



3. australasife, Fabr. 



Fam. III.— ACEIDIID.E. 



Mecostethus. 

 1. grossus, L. 



flp,vipes, Gmel., Don., Steph. 



Stenobothrus. 



1. lineatus, Panz. 



2. riridulus, L. 



nibicunda, Steph. 

 sligiuatica, Steph. 



3. rufipes, Zett. 



4. bicolor, Char p. 



5. elegans, Charp. 

 ? dorsata, Steph. 



6. parallelus, Zett. 



pedestris (Podisma), Steph. 

 pratorum, Fieb., Fisch. 



GOMPHOCEETIS. 



1- rufus, L. 



2. niaculatus, Thunb. 



biguttatus, Charp., Steph. 

 Pachyttlus. 



1. migratoi'ius, L. 



2. cinerascens, Fabr. 



danicus, L. 

 Christii, Steph. 



SCHISTOCEECA. 



1. peregrina, Oliv. 



Tettix. 



1. bipunctatus, L. 



Schrankii, Fieb. 



2. subulatus, L. 



Fam. IV.— LOCUSTID^. 



Leptophtes. 

 1. punctatissima, Pose. 

 autumnalis, Hac/enb. 

 Tirescens, Steph. 

 Standishii (Dale), Curt. 



Phaneropteea. 

 (?) 1. falcata, Scop. 



Meconema. 

 1. vai-ium, Fabr. 



XiPHIDIUM. 



1. dorsale, Latr. 



LOCUSTA. 



1. viridissima, L. 



