BLATTODEA. 



COMPARATIVE TABLE OF THE THREE BRITISH ECTOBII. 



1. Size . 



2. Colour 



3. Pronotum. 



4. Elytra, . 



5. Elytra, ? . 



6. Wings 



7. Wings 



8. Legs . 



9. Abdomen 



10. Cerci 



E. lupponlcus. 



E. perspicillaris. 



10 mm. 



Dark yellowish- 

 grey. 



Dark with pale 

 borders. 



Fully developed. 



Reaching fourth 

 segment. 



Fully developed. 

 Rudimentary. 



Rather dark. 

 Dark except 

 apex. 



Blackish. 



9 mm. 

 Straw-coloured. 



Pale, almost 



concolorous. 

 Fully developed. 

 Fully developed, 



a little shorter 



than in $ . 

 Fully developed. 

 Fully developed, 



a little shorter 



than in <$ . 

 Pale. 

 Ochreous, with 



marginal darker 



spots. 

 Pale. 



E. panzeri. 



8 mm. 



Dark yellowish- 

 grey. 



Pale with darker 

 marks. 



Fully developed. 



Reaching third 

 segment. 



Fully developed. 

 Rudimentary. 



Usually dark. 

 Dark, paler 

 along centre. 



Very dark. 



Genus 1. ECTOBIUS Stephens. 



Ectobius STEPH. Illus. Brit. Ent. Maud. VI, p. 45. 

 Ectobia WESTWOOD Intro. Mod. Class. Ins. II, p. 44-. 

 Blaita auctorum. 



1835. 



1840. 



When founding the genus Stephens gave the follow- 

 ing characters :--" Ante mm glabrous, very slender; 

 head nut ant ; thorax rounded in front, and concealing 

 the head, slightly produced in the middle behind ; eyes 

 small; elytra in the males as long as the abdomen, 

 with a single curved channel towards the base ; wings 

 generally complete in both sexes; bod// oblong, more 

 or less depressed above, mostly glabrous, sometimes 

 slightly pubescent above; abdomen of the males 

 furnished at the apex with two jointed processes only, 

 but destitute of styles; in the female the terminal 



e/ ^ 



segment is not carinated beneath ; legs moderate, 

 posterior rather the longest; femora rarely with spines 

 beneath ; tibiae with spines on the outer edge ; tarsi 

 with the three basal joints gradually diminishing in 

 length, the basal one not so long as the four others 



