Genera of the Family Attidce. 337 



PSEUDAMYCUS Simon. 1885. 



Amycus V. Hasselt, {albomaculatus) (non C. Koch nee L. Koch), 

 Pseudamyciis E. Sim , Arachn. recueillis par M. Weyers k Sumatra, Ex. 

 des Comp'.es-x-endus de la Soc. Ent. de Belgique, 



1885. 



Very closely related to the genus Ephippus Thorell, the cephalothorax 

 and eyes being almost the same, the falces being furnished with one strong 

 tooth on the inferior margin of the groove, and with two, the second be- 

 ing the smaller, on the superior margin (in -Ephippus the inferior has 1, 

 and the superior 3 or 4 minute teeth), the metatarsi and tarsi III and IV 

 being a little shorter than the patellae with the tibiae (they are a little 

 longer in EpMppus), and the tibiae III and IV armed with a dorsal spine 

 below the base. 



The genus Amtjcus C. Koch (types igneus), found in South America, is 

 easily distinguished by its clypeus being as wide as, or wider than the an- 

 terior eyes, and by the inferior margin of the falces being provided with 

 from 3 to 5 teeth. 



PTOCASIUS Simon. 1885. 



Ptocasius Sim., Arach. recueillis par M, Weyers, a Sumatra, Ex. des 

 Comptes-rendus de la Soc. Ent, de Belgique, 1885. 



Related to the genus Hasarius, the cephalothorax being almost the same, 

 but the occular area being a little longer above, scarcely one fourth wider 

 than long, parallel or barely wider behind, convex on both sides behind 

 the eyes; eyes as in Hasarius excepting that those of the second row are 

 more widely removed from the posterior than from the anterior eyes; 

 labium more attenua,ted, falces with a pair of teeth (or a bifurcated 

 tooth) on the inferior margin of the groove, which ai'e very unequal, the 

 first being much smaller than the second, the maxillae in the -i denticu- 

 lated on the outer side behind the corner. Legs as in the genus Hasarius 

 but witli the tibiae and metatarsi I and II armed on both sides with lat- 

 eral spines, tibiae I and II without dorsal spines. III and IV with a smaller 

 dorsal spine placed behind the base, integuments covered with simple 

 hairs, not with scales. 



Equally near to the genus Cytaea Keyserl. (in L. Koch, Ar. Ausfr.) but 

 differing from it in having the cephalothorax shorter and higher, by the 

 superior margiu of the falces being provided with two teeth, as in 

 Hasarius, while in Cytaea there are four small ones, by the two teeth of the 

 inferior margin being very unequal, and finally by the integument being 

 covered with simple hairs, while the Cytaea of tbe hairs are scale-like. 



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