CLASS III. AnACllNoTpA. 157 



** Ej/cs not describing the segment of a circle. Maxilla: straight, 

 with their points dilated. 



Genus 17. TETRAGNATIIA. Latreilk, Leach. 



Ei/cs sube(|ual; disposed in two straight and almost parallel transverse 

 lines, the four middle ones forming nearly a regular quadrangle: 

 maxilliE straight, elongate and narrow, almost equally broad; the 

 ape>; externally dilated and round: lip semicircular and somewhat 

 notched : legs v-^ry long and very slender; the first pair longest, then 

 the second, afterwards the fourth. 



Sp. 1, Tet. cxtcnui. Reddish ; abdomen oblong, golden green, with 

 the sides and two lines below yellowish; the middle below longitu- 

 dinally black. 



Aranea extensa. JJ«72., Fair. Tetragnathaextensa. Latr.^Walck., Jxach. 



Iniiabits Europe; frequenting moist places, in which it constructs a 

 vertical web, sitting on it with its legs extended. 



Genus 18. EPEIRA. Wukkender, Laircillc, Leach. 



Latreillc has divided this genus into sections, most of which would 

 form good genera. 



Ej/cs with the four middle ones placed on an abruptly formed tubercle 

 in the form of a quadrangle, the two anterior ones largest and most 

 distant; the lateral eyes on each side subgeminated and placed ob- 

 liquely on a tuj^rcle : maxilla subcircular, internally membrana- 

 ceous: /</) semicircular; short, with the point membranaceous : legs 

 moderately long, hispid, the thighs rather strong; the first pair 

 largest, then the second, afterwards the fourth pair : thorax inversely 

 elongate subcordate, anteriorly broadly truncated : abdomen subglo- 

 bose, large, much broader than the thorax. 



Sp. 1. Ep. Diademi. Reddish; abdomen globose-oval, with an elevate 4 

 angle on each side of its base; dorsal band broad, triangular, der- 

 tated, darker, with a triple cross of luteous white dots or spots, aij 

 with four impressed dots disposed in a quadrangle. 



Aranea Diadema. Li7in. Araignee a, croix. De Geer. Eptira Dia- 

 denia. Walck., Lutr., Leach. 



Inhabits Europe. It frequents the borders of woods, rocks, and gai- 

 dens, and is well known in Britain by the names Sceptre or Diadem 

 Spider. 



*** JEyes describing the scginent of a circle. 



Genus 19. THOMISUS. Walck., Latr., Leach. Heteuopod^. 



iaff. MisuMEXA. Lutr. 



Eyes generally subequal, placed in t\vo transverse lines in a kind of 



semicircle : maxilltB oblique, covering the side of the lip and in some 



degree converging; the hiternal apex truncate: lip somewhat o\ai 



