210 [September, 



b"""". Metathorax with at most one distinct area ; antennae brown, at least on the 

 apical half. 



aa. Inner branch of the chela} curved at the end and with a group of very short 

 plates, not exceeding in length a third of the thickness of the branch, 

 middle with a row of bristles as short as the plates ; vertex strongly 

 shagreened 5. arcuatus, Kieff. 



bb. Inner branch of chelae straight to its end, which bears two plates as long as 

 the thickness of the branch, the middle with bristles as long as the 

 plates ; head dull or slightly shining ; metathorax with a cross ridge, 

 without an area 6. vicinus, Kieff. 



b""". Extremity of inner branch of chelae without plates ; metathorax without a 

 cross ridge. 



aaa. Antennae reddish-yellow, thickened at end 7. flavicorais, Dalm. 



bbb. Antenna} brown, short and not thickened 8. imberbis, Kieff. 



b". Inner branch of the chelae with one or more rows of dense plates ; fourth 

 joint of the anterior tarsi the longest. 



x. Head transversely striated with three ridges ; third joint of antennae twice 

 as long as wide 9. tricar inatus, Kieff. 



xx. Head rugosely punctured with one ridge ; third joint of antennae three times 

 as long as wide 10. kiefferi, Cliitty. 



b. Head without a frontal ridge, rarely with a little ridge situate before the 



ocellus, and hardly longer than it ; usually with an impressed longitu- 

 dinal line more or less distinct. 



z. Wings hyaline, with a transverse band occupying the apical third... 



11. infectus (Hal.), Walk. 



zz. Wings hyaline, at most with a brown spot. 



y. Inner claw of chelae without lamillse 12. rufulocollis, Chitty 



(? dorsalis, Nees, ? collaris, Dalm.). 



yy. Inner claw of chelae with lamillse. 



s. Prothorax and mesonotum, except the part between the parapsidal furrows, 



blackish-red ; no frontal furrow ; otherwise like anicar inatus... 



13. fuscicollis, Kieff. 



ss. Prothorax orange, yellow or whitish. 



t. Insect yellow, with the eyes, a point at the base of the hinder tarsi, and the 

 metathorax, black 14. ephippiger, Dalm. 



tt. Head, thorax or abdomen mostly black. 



u. Prothorax as long or a little longer than the mesonotum... 



15. claricollis, Kieff. 



uu. Prothorax longer than the mesonotum. 



v. Head distinctly punctured in front ; clypeus and face with whitish pubes- 



cence ; scape hardly longer than third joint of antennae... 



16. gaullei, Kieff. 



vv. Head less distinctly punctured, with no whitish pubescence ; scape distinctly 

 longer than third joint 17- cameroni, Kieff. 



sss. Prothorax black. 



o. Fourth joint of anterior tarsi a little shorter than third, first longer than 



second and third united, third a little shorter than first (the metathorax 

 and inner claw of chela; also different ; but MS. illegible. — C. M.)... 



18. longitarsis, Kieff. 



