Spiders of the Suh-Famihj Lijssomance. 239 



LYSSOMANES ROBUSTUS Tacz. 1879. 



Plate X[, flgare 13. Plate XII, figure 7. 



Jelskia robusta Tacz. Les Araneides du Perou. Bull, de la Soc. Imp. 



des Nat. de Moscou, T. L III, 1878, No. 4, p. 373. 

 S . Length of ceplialothorax 2.3 mm; of abdomen 3 mm. 



Legs 9.2, 8.6, 8.8, 8.7. 



Cephalic part a Uttle shorter than thoracic. Quadrangle of eyes nearly 

 one-fourth wider than long. Eyes of first row twice as large as those of 

 second. Eyes of second row placed directly above those of first, 

 forming a row equally wide, looking forward. Clypeus only a 

 line. Falces very weak, vertical, parallel, as long as face; fang 

 very sliort. Maxillae and labium unusually short. Maxillae 

 rounded and a Uttle enlarged at their extremities, wliicli are quite 

 close together, excavated on their inner sides for the labium. 

 Labium a little longer than wide, rounded at tip, one-half as long as 

 maxillae. Legs 1, 3, 4. 2; femur of the first not quite so long as femur 

 •with patella of the second. Palpus with patella and tibia equally 

 long; patella and tibia two-thirds as long as tarsus. Tibia with a 

 stout fringe of hairs on the outer edge. Tarsus with one spine on 

 dorsum of enlarged part behind middle. 



Coloration (dry): Upper surface of ceplialothorax jet black, with two 

 indistinct brownish spots on thoracic part, and a few long white hairs 

 on eye-region. Clypeus black. Abdomen above, black, thinly cov- 

 ered with whitish hairs, and having two indistinct brownish spots 

 behind the middle. Falces black with extremities and fangs pale 

 yellow. Mouthparts black; sternum black witli a large pale yellow 

 spot in center. Venter ijale yellowish, excepting the anterior and 

 posterior ends, which are pale. Legs light yeUow, excepting tarsus 

 of the first, and tips of other legs which are black. Palpus black, 

 except that part of the tarsus which projects beyond the bulb which 

 is pale yellow. 



Habitat: Peru. 

 From the collection of Dr. Taczauowski. 

 The jet black body and pale legs of this sjiecies quickly distinguish it from 



aU members of this group. 



