No. 2.] SPIDERS OF THE MARPTUSA GROUP. 117 



are on the same plane. The sides are vertical and almost par- 

 allel, widening a little behind the dorsal eyes. 



The quadrangle of the eyes is one-fourth wider than long, 

 is equally wide in front and behind, and occupies from one- 

 third to two-fifths of the cephalothorax. The first row is 

 straight or a little curved. The eyes are sub-touching or slight- 

 ly separated. The middle eyes are almost twice as large as the 

 lateral. The second row is about half-way between the first and 

 the third. The dorsal eyes are smaller than the lateral eyes of 

 the first row, and form a row which is as wide as the cephalo- 

 thorax at that place. 



The labium is longer than wide. 



The narrow, parallel, vertical shape of the cephalothorax 

 and the large middle eyes distinguish Hyctia from Marptusa. 

 The flat dorsum separates it easily from Icius and Menemerus ; 

 and the greater length in proportion to its width from 

 Holoplatys, Rudra and Balmaceda. 



Hyctia is nearest Goleta and Itata. Goleta is even lower, 

 and has the cephalothorax twice as long as wide, the middle 

 eyes of the first row more than twice as large as the lateral, and 

 the fii-st row of eyes curved downward ; while in Itata the sides 

 are neither vertical nor parallel, and the thoracic part slopes 

 from the dorsal eyes. 



The type of this genus is Hyctia (Salticus) nivoyi Lucas, 

 described in Simon's Arachnides de France, Vol. IH., p. 20. 

 We have also Hyctia canestrini Cn. et Vy., ibid., p. 21, and 

 Hyctia pikei P., N. A. Attidse, p. 79. 



SPADERA GEN. NOV. 

 The cephalothorax is low, and is long in proportion to 

 the width. The sides are vertical in front, but slant out a 

 little in the thoracic part ; they are not far from being parallel, 

 but there is a slight dilatation just behind the dorsal eyes, be- 

 yond which the cephalothorax narrows again. The cephalic 

 plate is slightly inclined forward. The thoracic part does not 

 slant for two-thirds of its length and then drops abruptly. The 

 quadrangle of the eyes is about one-fifth wider than long, is 



