122 MOD£RV SYSTEM. 



ing. Lip not advancing between the maxilla: nor prominent, but as 

 long as broad. 



* Ei/cs eight. Mandibles projecting. 



Genus G. ATYPUS. Latr., Leach. Oleteua. Walckcn'der. 



Ej/cs on each side geminated : lip very small and quadrate, inserted 

 under the base of the maxillae : palpi inserted at the external base of 

 the maxilhp, which are dilated at that part. 



Sp. 1. At^. Sulzeri. Black and shining : mandibles very long and 

 strong : thorax nearly quadrate ; plain behind, abruptly elevated be- 

 fore : the two middle eyes placed on an eminence : back of the ab- 

 domen coriaceous and more sliining : joints of the legs shining. 



Olctere dift'orme. Walck. Tab. des Aran. 7. Atypus Sulzcr. Lair., 

 Leach. 



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. Ej/es six. 

 Genus 7. SEGESTllIA. Latrcille, Walckcn'der, Leach. 



Maxillte straight, longitudinal, with the liase thickened, dilated exter- 

 nally, somewhat wedge-shaped, the middle longitudinally convex: 

 Lip elongate-quadrate, longer than broad, the middle longitudinally 

 convex or subcarinatcd : legs, the first pair longest, rest in propor- 

 tion, the second, then the fourth, the third pair being shortest : 

 ei/es placed in a transverse line, the extremities somewhat recurved. 



Sp. 1. Seg. scnoculata. Thorax blackish-brown : abdomen oblong, gri- 

 seous, with a longitudinal band of blackish spots : legs pale brown 

 with obscure bands. 



Aranea scnoculata. Fahr. Segestria senoculata. IT «/c7i., Latr., Leach. 



Inhabits rocks and old buildings. It is common in France, near Paris, 

 and in England it is not rare. 



Genus 8. DYSDERA. Latreille, Walckcn'der, Leach. 



Max'illtc straight, longitudinal, with the base thickened and externally 

 dilated at the insertion of the palpi : the aj)ex internally obliquely 

 truncated, and thence externally acutely terminated : palpi with the 

 first joint short and nearly obsolete : lip elongate, quadrate, gradu- 

 ally narrowing towards its point : eyes forming the figure of a horse- 

 shoe, the open part in front : legs with the first, then the fourth, 

 then the second pair longest, the third shortest : claws with a little 

 brush beneath. 



Sp. 1. Di/s. erijthr'ina. IMandibles and thorax sanguineous : legs lightly 

 coloured : abdomen soft, grayish yellow and silky. 



Aranea erythrina. Fourcroy Fn. Paris, ii. '22i. Dysdera crythrina. 

 Latr., Walck., Leach. 



