MODERN SYSTEM. 
122 
mg. Lip wot advancing between the maxilla: nor prominent, but a 5 
long as broad. 
* Eyes eight. Mandibles projecting. 
Genus 6. ATYPUS. Lair., Leach. O cetera . Walckcniier. 
Eves on each side geminated : Up very small and quadrate, inserted 
"under the base of the maxillte : palpi inserted at the external base o 
the maxilla:, which are dilated at that part. , 
go. l. Aty. Sukeri. Black and shining: mandibles very long an 
strong : thorax nearly quadrate ; plain behind, abruptly elevated e 
fore: the two middle eyes placed on an eminence: back of the ah' 
doraen coriaceous and more shining : joints of the legs shining. 
Olcterc diftbrnie. Watch. Tab. dee Aran. T. Atypus Sulzer. Lair-, 
Inhabits France and England. In the latter country it was discovered 
by Dr. Leach near Exeter, and it has twice occurred near London. 
** Mandibles perpendicular. Eyes six. 
Genus 7. SEGESTRIA. Latrcille, WaJckenacr, Leach. 
Manila straight, longitudinal, with the base thickened, dilated exter- 
nally, somewhat wedge-shaped, the middle longitudinally convey 
Lip elongate-quadrate, longer than broad, the middle longitudinal!? 
convex or subearinated : legs, the first pair longest, rest in propo r ; 
tion the second, then the fourth, the third pair being shortest- 
eves placed in a transverse line, the extremities somewhat recurve:. 
So l Seg. senocidata. Thorax blackish-brown : abdomen oblong, g 
seous, with a longitudinal band of blackish spots : legs pale bro» 
with obscure bands. a, 
Aranea senoculata. Fa.br. Segestna scnoculata. Wakk., Latr., Lc« 
Inhabits rocks and old buildings. It is common in France, near Pan-’ 
and in England it is not rare. 
Genus 8. DYSDEIIA. Latrcille, Wakkemer, Leach. 
Maxillte straight, longitudinal, with the base thickened and external^ 
dilated at the insertion, of the palpi: the apex internally obi iq llt - 
truncated, and tlience externally acutely terminated: palpi with 
first joint short and nearly obsolete: Up elongate, quadrate, g ra 
ally narrowing towards its point: eyes forming the figure of a ho^ 
shoe, the open part in front : legs with the first, then the f° l * 
then" tire second pair longest, the third shortest : claws with a 1 
brush beneath. . 
Sp. 1. Dys. erythrina. Mandibles and thorax sanguineous : legs n 3 
coloured : abdomen soft, grayish yellow and silky. 
Aranea erythrina. Fourcroy Fn. Paris, ii. 224. Dysdera er) 
Lair., Watch., Lcac/i. 
