228 
MODERN SYSTEM. 
the elytra have been elevated. The front, the under parts of the body, 
and the legs, in all the British species are yellowish.” 
* Elytra to the apex gradually decreasing and ending in a point. 
The channel on the anterior margin of the elytra in this division 
is uninterrupted, and gradually disappears before it reaches to the 
extremity of the elytra. 
Sp. 1 . Cor. coleoptrata. Thorax reddish-gray : elytra palish yellow, with 
longitudinal rows of black spots. 
Sigara coleoptrata. Elytra wholly coriaceous and brown : the exterior 
margin yellow. Fair. Syst. Rhyng. 105. 4. 
Inhabits ponds and ditches near Norwich. Dr. Leach has observed, that 
although the character by Fabrieius does not accord with that given 
above, yet as he drew his description from a museum specimen (which 
generally assumes the colour he mentions) the Doctor has given his 
synonym without any hesitation; but this insect is distinct from the 
Sigara coleoptrata of Panzer, which is figured with a scutellum, and 
most probably belongs to tire genus Sigara as mentioned above. 
** Elytra at the apex rather rounded. 
The channel in the fore part of the elytra, at about two-thirds from 
its commencement, is interrupted by an oblique, transverse, elevated 
line, and it terminates abruptly before it reaches to the apex of the 
elytron, and then it leaves the margin inclining a little inwards or 
backwards. 
a. Elytra and thorax rough. 
Sp. 2. Cor. striata. Thorax and elytra brown with yellow lines and 
transversely striated : back black, sides pale yellow. 
Notonecta striata. Linn. Corixa striata. Leach. 
Inhabits stagnant waters. 
Sp. 3. Cor. stiignalis. Thorax with numerous transverse yellow lines ■ 
elytra brown, besprinkled with minute yellowish dots : anterior part 
of the margin yellowish; posterior with yellowish lines; back brown- 
ish black. 
Corixa stagnalis. Leach, Tr. Linn. Soc. xii. 
Inhabits ponds and stagnant waters. 
This species is about half the size of C. striata. 
Sp. 4. Cor.fossarum. Brown: thorax with six transverse yellow lines "• 
elytra brown, with minute yellowish dots, the anterior part yellow- 
ish, towards the base of the posterior part yellowish lines : back 
yellowish. Smaller than C. stagnalis. 
Inhabits ponds and ditches. 
Sp. 5. Cor. lateralis. White : thorax with seven black lines: jfytra with 
minute black spots, anterior margin immaculate, 
C. lateralis. Leach, Trans. Linn. Soc. xii. 
