126 
MODERN SYSTEM. 
of thu anus short and nearly equal, of a conic form : lip nearly se- 
micircular, broader than long, and projecting between the maxilla; : 
(eyes eight,) 
* Eyes not describing the segment of a circle. Maxilhe straight - 
ened toiourds their extremities, but not diluted. 
Genus 14. SYCTODES. JMreille, Walchcnue.r, Lcacli. 
Maxilhe oblique and longitudinal, covering the sides of the lip ; their 
bases thickened, the apex internally obliquely truncated : lip some- 
what quadrate, the base a little contracted : legs with the fourth, 
then the first pair longest; the third pair shortest. 
Sp. 1. Sye. thoracica. Pale reddish-white, spotted with black : thorax 
large and somewhat orbicular, elevated roundly behind : abdomen 
lighter in colour, and subglobose. 
Inhabits Paris, in houses. It has twice occurred near Dover, but both 
the individuals were females. 
Genus 15. THEllIDIUM. Walckender, Lutreille, Leach. 
Maxilhe with an oblique direction covering the sides of die lip, con- 
verging towards their points; of equal breadth; the internal apex 
.obtuse, or obliquely truncated : lip small, triangular, or semicircu- 
lar; the apex truncate or subrounded : legs elongate, the first, then 
the fourth pair longest : eyes with four in the centre, forming a qua- 
drangle, the under ones placed on a common elevation; two others 
on each side geminated, and situated on a common elevation. 
•Sp. 1. Th. sisiphum. Rufous : abdomen globose, with three lines. 
Theridium sisiphum. Jxach. 
Inhabits Europe, in the corners of buildings, walls, and rocks. It is 
figured by Lister, t. 11. Jig. 14. 
Genus 1C. PHOICUS. Wolckcniier, Latreille,' Leach. 
Maxillre oblique, covering the sides of the lip, converging from the 
base to the apex: apex internally truncated: Up transversely qua- 
drate ; the lateral angles ol the apex rounded and somewhat mar- 
gined: legs very long and very slender; the first, then the second 
and fourth (nearly equal) the longest: eyes inserted on a tubercle j 
two geminated and placed transversely in the middle; tlireeoneach 
side amassed in a triangle, one larger than the rest. 
Bp. 1. Ph. phalungiiiides. Pale-livid: abdomen elongate, cylindric-oval, 
very soft, obscure cinereous: tip of the tibiae and thighs with a pah 
ring of a whitish colour. 
Pholcus phalangioides. Walck., Lutr., Leach. Aranea Pluchii, Scopol- 
Aranea opiliouiilcs. Schrank. Aranea phalangioides. Fourcroy. 
Inhabits houses in Europe; in the western parts of England it is ex- 
tremely common. Its body vibrates like that of a tipulideous in- 
sect, 
