338 Wisconsin Academy of Sciences, Arts and Letters. 



Salticus sinuatus Doleschall (Plexippus Th.), Plexippiis laticeps Thorell, 

 and probably many other species described by Dr. Thorell un der the 

 generic name of Plexippus belong to the genus Cytaea. 



It is probable that several of the species described by Keyserling under 

 the name of Hasarius, belong in the genus Ptocasius, particularly linea- 

 tus, albocinctus, insularis, chrysostomus, and mulciber, which are unknown 

 to us. 



STAGETILLUS Simon. 1885. 



Stag'etillus E. Sim., Arach. 'recueillis par M. Weyers a Sumatra, Ex. des 

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



Near the genus Bavia, but having the cephalothorax much longer; the 

 thoracic part almost ^ longer than the cephalic, the ocular area longer 

 above, a little narrower behind than in front, the sternum plainly wider 

 than the intermediate coxae, and very much narrower in front, the space 

 between the anterior coxae not narrower than the width of the labium, 

 legs 1, 4, 2, 3, the first much stouter that the others, and compressed, tibiae 

 and metatarsi I and II furnished with stout spines disposed in two inferior 

 rows, the posterior le;5s unarmed, the metatarsi with the tarsi III and IV 

 longer than the patellae with the tibiae, trochanter IV cylindrical and 

 long, scarcely shorter than the coxae, falces short, parallel, almost plaj\e in 

 front, the inferior margin of the groove with 3 or 4 teeth. 



AGOBARDUS Keyserling. 1885. 

 Agobardus Keyserling, Neue Spinnen aus Amerika, VI, p. 33. 



Cephalothorax' about 4 longer than wide, nearly vertical on the sides, 

 narrower in front and behind, and not wider than the third row of 

 eyes, very convex above, failing steeply to the posterior border, and 

 haying the cephalic part strongly inclined forward. 



Quadrangle of the eyes equally wide in front and behind, and much wider 

 than long, reaching behind to the middle of the cephalothorax. 

 Looked at from in front the first row of eyes seems to be strongly 

 curved, and the side e^^es to be separated from the middle eyes by 

 more than their own radius. The small eyes of the second row are 

 about halfway between the fore side eyes and the eyes of the third 

 row, which are equal'y distant from each other ani from the lateral 

 borders. 



Falces a little diverging, and as long and stout as the patellae of the first 

 pair of legs. 



Labium not longer than wide, and only half as long as the maxillae, which 

 are rounded in front and moderately wide. 



Sternum only a little longer than wide, and plainly wider than the coxae. 



