ORDER II. HEMIPTERA, 
61 
tt ... Genus 41. Blatta. 
Head inflected • 
wings flat an.! “ mr [ a set . aceous : unequal, filiform: elytra and 
re arginaL ^ yCO w- Ce ° US: thora * ,lcarl y flat > ortricular, and 
niost species r vi ° t ru ' c< ior 'running: two hums above die tail in 
Sp. p »/ . Kf' 1 ' 4. Jig. 17.) 
This i, K ‘ r ‘ cnlu,is \ Black-beetle or Cock-roach, 
generally snrend l? rlgm ^ lly a iK,tlVR of Sou * America, but is now very 
insect, thStt 8 °^ !n° Pa Itc ™ be considered a British 
"nurs m^rteal ind in Chea ^ and ™ P^ces, and de- 
during the di ai c?l T P T'T S ’ Sh ° eS - &c - Jt conceals itself 
Oenus 42. Oryi.lcs. 
}Iead infl ected, burnished with maxilla* and filiform mini- 
srnr f 11 ?"?; ** **»« -sas “™,x 
v i, e, “ “ •“ ii “ >»«• 
nhabits marshes, but is very local in Britain. 
Genus 43. Cicada. 
— - 
^‘ARJS - wi,, ‘ «■* 
Genus 44. Notonecta. 
-* '»■ «« 
formed for swimming. ‘ ,asc ‘ lunda ' J eet ciliated, 
on Scnns live in water, feeding 
active, and Swhn like li P " pa have feet; they 
Z ^ % 5r rwmts ^ 
Inhabits ponds W,S ' < ,irt ° rey; lhe head brown: the elytra truncated. 
JWr*,,, bfl Genus 45 - Nepa. 
*** Part Tkem T- Sh ° rt: "T fcmr > folded crosswise, the a„- 
S ;?T- d ":£ C “ US: ^forefeet cheliform; die 
?. ovate. (jp/ 5 an a|h colour: the thorax unequal: the body 
in Britain throughout the 
T flon g ;ovatr ( V 3 / an ^ 
Inhabits ponds and dit \? S ' 4; 
year. ditches; is very common i 
