ORTHOPTEROUS FAUNA OF THE BRITISH ISLES, ETC. 6 



Blatta americana, B. orientalis, and Phyllodromia germanica. 

 B. australasicE is now well known in Britain ; it has been 

 recorded from Belgium, but it does not appear in the Dutch list. 

 In addition to these, Rhyparobia maderce, LeucophcBa surinam- 

 ensis, Blabera gigantea, and Nyctihora holosericea have been acci- 

 dentally introduced with more or less frequency into Britain, but 

 have not been noticed in Belgium or Holland. 



NTCTIBORA HOLOSERICEA. 



Eleven species are in this family set down as British, of 

 which the three Ectobias only are indigenous. The three 

 Blattas and Phyllodromia germanica breed here profusely where 

 they are established, but require warmth. It is just possible 

 that L. surinamensis breeds, or has bred, in Kew Gardens. The 

 others are merely " casual visitors " due to foreign trade. Of 

 the last, N. holosericea has been but once noticed ; the single 

 specimen was taken at Covent Garden, and sent to Messrs. 

 Watkins and Doncaster, July 6th, 1897. They sent it alive to 

 Mr. Burr, who wishes me to record it. It is a large insect, 

 measuring 90 mm. in expanse of wings, of a fairly uniform rich 

 dark chestnut colour, except the wings, which are to a great 

 extent transparent ; the flat dorsal surface of the abdomen is 

 very dark, with much lighter irregular margins. The pronotum 

 and elytra are covered with a fine yellowish pubescence, which 

 in some positions gives them the appearance of emitting a faint 

 phosphorescent light. [Fig. 1. The tarsi of hind legs, cerci, 

 and antennae are restored.] 



None of the Mantidae are native in either country, though 

 Mantis religiosa has occurred accidentally in Belgium. 



