No. 2.] SPIDEBS OF THE MARPTUSA GROUP. 119 



surrounded by white. The legs are brown, the first pair being 

 the darkest. The falces are dark brown. The under surface 

 is dark brown, thinly covered with white hairs. 

 We have one male, from Madagascar. 



HELVETIA GEN. NOV. 



Rather small spiders, with the cephalothorax narrow and 

 long and the abdomen rounded. 



The cephalothorax is narrow, low and flat. The sides are 

 vertical, widening from the anterior to the posterior end, with 

 the posterior angles rounded. The cephalic and thoracic parts 

 are on the same plane, and there is no fall behind until just 

 above the posterior margin. The quadrangle of the eyes is 

 ■equali}'- w-ide in front and behind, is one-fifth wider than long 

 and occupies two-fifths of the cephalothorax. The anterior 

 row is curved downward, the eyes being sub-touching and 

 ratlier small, the middle about twice as large as the lateral. 

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

 The third row is about as wide as the cephalothorax at that 

 place. The labium is longer than wide. 



The cephalothorax in this geims is not so wide as in Spa- 

 dera. It differs from Hyctia in having the sides of the cephalo- 

 thorax wider behind instead of parallel, and in the first row of 

 ■eyes being curved downward ; it lacks, besides, the exaggerated 

 length and slenderness of that genus. 



HELVETIA SANTAREMA SP. NOV. 



Plate XII., Figs, 2— 2d. 

 9 . Length, 5.2. Length of cephalothorax, 2 ; width of 



cephalothorax, 1. 

 Legs, 4132 ; are short and almost equally stout. 



The falces are rather long and stout for the size of the 

 spider and are a little inclined forward. 



The ground color is dark olive-brown. A central longi- 

 tudinal band of snow-white hairs extends along the entire 

 length of the spider from the anterior eyes to the spinnerets ; 

 and both cephalothorax and abdomen have snow-white bands 



