spiders of the Sub Family Lyssomance. 253 



SIMONELLA MYRMECI^FORMIS* Taczanowski. 1874. 

 Plate XII, figure 8. 



Janus myi-meci?ef ormis Tacz. , Les Araneides de la Guyane f ran^aise, p. 94. 



Ejes in four rows; cepbalothorax in two j)arts, abdomen with a marked 

 constriction in the middle; general color ochre yellow, four black 

 spots on the head, two pale rings on the abdomen. Length ^ 7 mm. 

 <5 . The cepbalothorax is very slender and much elongated, with tlie head 

 a little longer than wide, distinctly separated by a marked constric- 

 tion across the back and throughout the height of sides; the thoracic 

 part considerably longer than the head, a little narrower and com- 

 posed of three distinct portions of which the anterior represents a 

 short slightly contracted neck, which is followed by a convex knob, 

 behmd which is a rather long pedicle which is more slender than the 

 neck; the cephaUc plate is lightly arched and inchned forward; the 

 lateral contours of the head are arched; behind it is terminated by a 

 facet with a gentle slope. Eyes in foiu- rows, in a quadrangle a little 

 longer than wide;t those of the first row very large, in contact, and 

 occupying the entire height and width of the face; those of the sec- 

 ond pair behind on the lateral border of the back at a considerable 

 distance from the preceding ones, and directed upward; eyes of the 

 thii'd pair halfway between those of the second and fourth; external 

 border of the anterior eyes in a straight line and parallel with those 

 of the other pairs. Falces short, thick and vertical. Abdomen 

 longer and more slender than the cex)halothorax, strongly constricted 

 in the middle so as to form three distinct jDarts, of which the ante- 

 rior is cylindrical, almost horizontal, the second very slender and 

 strongly bent and the posterior elliptical, of the same breadth, but 

 much longer than the anterior, that is to say the whole resembles an 

 S faintly bent and enlarged at the two extremities. The spinnerets 

 are short. The legs are slender and of moderate length, in the order 

 4, 3, 1, 2. Palpi short, thicker than the legs, with the tibse short and 

 stouter thail the femora. The body is entirely bare, only a few hairs 

 being found around the anterior eyes, on the tarsi of the palpi, and 

 some which are almost imperceptible on the legs. 



Coloration: The general color is a pale ochre yellow; two large black spots 

 are found on each side of the head at the base of the ej'es, the ante- 

 rior one of which extends between those of tlie second and third 



*The de.s:riptioni of this species an-l of Incaui are tninslated from Dr. Taczanowski. 



+ This is tru3 when the quadrangle i.i uiideretood to include the first row of eyes; when 

 we use the expression "quadrangle of the eyes" in relation to the Lyssomanae (as in de- 

 fiuing tliis geuus) we refer to the (|uailr;int;lo f<iriin'd by thf sprnnrl .and fourth rows of 

 eyes. 



